YOUNGCHUL SUNG - KAISTAug. 2012 – Jul. 2013 Visiting Scientist, The Research Laboratory of...

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1 of 24 YOUNGCHUL SUNG Professor School of Electrical Engineering KAIST, Daejeon 34141 Republic of Korea Tel) 82-42-350-3484 Fax)82-42-350-3410 Email) [email protected] https://sites.google.com/view/youngchulsung EDUCATION Aug. 2000 May 2005 Ph.D. in Electrical and Computer Engineering (Minor: Applied Mathematics) Cornell University, Ithaca, NY, USA Advisor: Prof. Lang Tong Dissertation Title: “Detection of Non-independent and Identically Distributed Signals: Asymptotic Analysis” Mar. 1993 Feb. 1995 M. S. in Electronics Engineering Seoul National University, Seoul, Korea Advisor: Prof. Sangwook Nam Mar. 1989 Feb. 1993 B. S. in Electronics Engineering Seoul National University, Seoul, Korea EMPLOYMENT AND CAREER Sep. 2018 Present Professor, School. of EE, KAIST, Daejeon, Republic of Korea Mar. 2010 Aug. 2018 Associate Professor, Dept. of EE, KAIST, Daejeon, Republic of Korea Feb. 2007 Feb. 2010 Assistant Professor, Dept. of EE, KAIST, Daejeon, Republic of Korea Jan. 2018 Dec. 2018 Visiting Associate Researcher, Dept. of Electrical Engineering, Univ. of California, Irvine, Host: Prof. Hamid Jafarkhani Aug. 2012 Jul. 2013 Visiting Scientist, The Research Laboratory of Electronics (RLE) of Massachusetts Institute of Technology, Host: Prof. Lizhong Zheng Oct. 2005 Jan. 2007 Senior Engineer, Corporate R & D Center, Qualcomm, Inc. 5775 Morehouse Dr., San Diego, CA 92121, USA Jun. 2005 Sep. 2005 Postdoctoral Associate, School of Electrical and Computer Engineering, Cornell University, Ithaca, NY, USA Jan. 1995 Jun. 2000 Senior Research Engineer, LG Information & Communications, Ltd., Seoul, Korea Dept. of Digital Communications (Jan. 97 - Jun. 00), supervisor: Dr. Kyungkuk Lee Dept. of Satellite Communications (Jan. 95 - Dec. 96), supervisor: Dr. Nakmyeong Kim

Transcript of YOUNGCHUL SUNG - KAISTAug. 2012 – Jul. 2013 Visiting Scientist, The Research Laboratory of...

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    YOUNGCHUL SUNG

    Professor

    School of Electrical Engineering

    KAIST, Daejeon 34141

    Republic of Korea

    Tel) 82-42-350-3484

    Fax)82-42-350-3410

    Email) [email protected]

    https://sites.google.com/view/youngchulsung

    EDUCATION

    Aug. 2000 – May 2005 Ph.D. in Electrical and Computer Engineering (Minor: Applied Mathematics)

    Cornell University, Ithaca, NY, USA

    Advisor: Prof. Lang Tong

    Dissertation Title: “Detection of Non-independent and Identically Distributed Signals:

    Asymptotic Analysis”

    Mar. 1993 – Feb. 1995 M. S. in Electronics Engineering

    Seoul National University, Seoul, Korea

    Advisor: Prof. Sangwook Nam

    Mar. 1989 – Feb. 1993 B. S. in Electronics Engineering

    Seoul National University, Seoul, Korea

    EMPLOYMENT AND CAREER

    Sep. 2018 – Present Professor, School. of EE, KAIST, Daejeon, Republic of Korea

    Mar. 2010 – Aug. 2018 Associate Professor, Dept. of EE, KAIST, Daejeon, Republic of Korea

    Feb. 2007 – Feb. 2010 Assistant Professor, Dept. of EE, KAIST, Daejeon, Republic of Korea

    Jan. 2018 – Dec. 2018 Visiting Associate Researcher, Dept. of Electrical Engineering,

    Univ. of California, Irvine, Host: Prof. Hamid Jafarkhani

    Aug. 2012 – Jul. 2013 Visiting Scientist, The Research Laboratory of Electronics (RLE) of

    Massachusetts Institute of Technology, Host: Prof. Lizhong Zheng

    Oct. 2005 – Jan. 2007 Senior Engineer, Corporate R & D Center, Qualcomm, Inc.

    5775 Morehouse Dr., San Diego, CA 92121, USA

    Jun. 2005 – Sep. 2005 Postdoctoral Associate, School of Electrical and Computer Engineering,

    Cornell University, Ithaca, NY, USA

    Jan. 1995 – Jun. 2000 Senior Research Engineer, LG Information & Communications, Ltd., Seoul, Korea

    Dept. of Digital Communications (Jan. 97 - Jun. 00), supervisor: Dr. Kyungkuk Lee

    Dept. of Satellite Communications (Jan. 95 - Dec. 96), supervisor: Dr. Nakmyeong Kim

    mailto:[email protected]

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    RESEARCH INTERESTS

    Signal Processing for Communications; Communication Theory and Systems

    Statistical Signal Processing and Statistical Inference

    Signal Processing Theory and Methods

    Research History

    2007 ~ Present: Wireless Communications: Signal Processing for Communications Statistical Signal Processing and Statistical Inference

    2005 ~ 2007: WCDMA (3GPP Release 5/ 6) at Qualcomm, San Diego, CA, USA

    2000 ~ 2005: Statistical Signal Processing, Asymptotic Statistics, and Large Deviations

    - Detection of Correlated Random Processes with Application to Sensor Networks 1995 ~ 2000: CDMA at LG Information & Communications, Ltd. (now merged with LG Electronics)

    PROFESSIONAL ACTIVITIES

    Professional Affiliations

    IEEE Senior Member (S’92, M’93, SM’09)

    IEEE Signal Processing Society, Communication Society, Information Theory Society

    Institute of Electronics and Information Engineers (IEIE) of Korea

    Korean Institute of Communications and Information Sciences (KICS),

    International Professional Activities and Services

    Editorial Services

    Associate Editor, IEEE Transactions on Signal Processing, Sep. 2017 ~ Present (consecutive two terms)

    Associate Editor, IEEE Signal Processing Letters, Jan. 2012 ~ Jan. 2014

    Editor, ICT Express, Jun. 2015 ~ Dec. 2019

    Guest Editor, 2012 IEEE Journal on Selected Areas in Communications, Special Issue on

    “Theories and Methods for Advanced Wireless Relays,” 2012

    Technical Committee (TC) Activities

    Member, UNESCO/Netexplo Advisory Board (UNAB), May. 2015 – Apr. 2017

    IEEE Communications Society, Asia Pacific Board (IEEE ComSoc APB)

    Vice Director, Jan. 2020 – Present

    Chair, Chapters Coordination Committee (CCC), Jan. 2018 – Dec. 2019

    Chair, Membership Development Committee (MDC), Jan. 2016 – Dec. 2017

    Vice Chair, Information Services Committee (ISC), Jan. 2014 – Dec. 2015

    Vice Chair, Meeting and Conference Committee (MCC), Jan. 2012 – Dec. 2013

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    Member, IEEE Communications Society, Signal Processing and Communications Electronics

    (IEEE ComSoc SPCE) Technical Committee, Jan. 2014 - Present

    Member, IEEE Communications Society, Student Competition Committee, 2019, 2018, 2017, 2016

    Member, Asia-Pacific Signal and Information Processing Association (APSIPA),

    Signal and Information Processing Theory and Methods (SIPTM) TC,

    Jan. 2010 – Dec. 2018

    Conference Activities

    Organizing Role

    Organizing Committee Member, East Asian Summer School of Information Theory, Taipei, 2018

    TPC Co-Chair, KICS–North America, Information Theory Workshop, San Diego, CA, 2018

    TPC Co-Chair, KICS–North America, Information Theory Workshop, San Diego, CA, 2017

    TPC Track Chair, IEEE VTC 2014

    Publicity Chair (Asia-Pacific), IEEE Globecom 2012

    Sponsorship Chair, IEEE WiOpt 2009

    TPC Member

    2021: ICC

    2020: ICML, NeurIPS, Globecom, ICC, SPAWC, WCNC

    2019: Globecom, ICC, SPAWC, IWCMC, 1st Intl. Workshop on Rate Splitting for 5G and Beyond

    2018: Globecom, ICC, ISWCS, APSIPA

    2017: Globecom, ISWCS, WCSP, ICIC

    2016: Globecom, ISWCS, APCC, URSI AP-RASC mmWave comm. special session organizer

    2015: Globecom, ICC, ISWCS

    2014: Globecom, ICC, APSIPA, MILCOM

    2013: Globecom, APSIPA, DCOSS,

    2012: Globecom, APSIPA, TENCON

    2011: Globecom, ICC, ITC-CSCC/Special Sesssion Organizer

    2010: Globecom, APSIPA, DCOSS, PIMRC, MILCOM

    2009: Globecom, APSIPA

    2008: SAM

    External Expert Reviewer for

    ICASSP 2020/2019/2018/2017/2013/2012/2011/2010/2009/2008

    SPAWC 2011/2010

    Activities in Korea

    Korean Institute of Communications and Information Sciences (KICS, 한국통신학회)

    - Elected Trustee (직선평의원, 2014 - Present)

    - International Liaison Division, Director (국제협력집행이사, 2018, 2017, 2016, 2015)

    - Domestic Journal Division, Director (국내논문이사, 2014)

    - Associations Representative (2012, 2011)

    Technical Committee (TC) Activities

    - KICS, Coding and Information Theory Society (한국통신학회 부호및정보이론 연구회)

    Chair (2015)

    Vice Chair (2014)

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    Secretary (2013, 2012, 2011)

    TC Member (2008 – Present)

    - KICS, Mobile Communications Society (한국통신학회 이동통신연구회)

    TC Member (2010-Present)

    - KICS, Military Communications Society (한국통신학회 군통신연구회)

    Secretary (2011,2010, 2009),

    TC Member (2009 –Present)

    Conference and Workshop Activities:

    Organizing Role

    - TPC Vice Chair, JCCI 2017

    - TPC Vice Chair, JCCI 2016

    - Financial Committee Chair, JCCI 2011

    - Special Session Committee Chair, JCCI 2010

    - TPC Co-Chair, KICS 2011 Future IT Forum

    TPC Member

    - KICS Mobile Communications Society 2011

    - KICS Military Communications Workshop 2008,2009,2010

    - KICS 2009 Fall Workshop Special Session

    HONORS AND AWARDS

    Samsung Humantech Paper Award (Silver), coauthored with Whiyoung Jung, Feb. 2020

    World Cyber Games (WCG) 2019, New Horizons, Semi-Finalist with students Woojun Kim et al. Jul. 2019

    Samsung Humantech Paper Award (4th Place), coauthored with Woojun Kim and Myungsik Cho, Feb. 2019

    Championship, the 1st AI Soccer Worldcup, with students Woojun Kim et al., Aug. 2018

    Championship, the 1st KAIST Intramural AI Soccer Competition, with students Woojun Kim et al.,

    Mar. 2018

    Second Prize, the 1st AI Soccer Korean Cup, with students Woojun Kim et al., Dec. 2017

    Samsung Humantech Paper Award (Two bronze awards): One coauthored with Gilwon Lee and

    the other coauthored with Junyeong Seo et al., Jan. 2015

    Distinguished Service Award, Korean Institute of Communications and Information Sciences (KICS),

    Nov. 2014

    Samsung Humantech Paper Award (Silver), coauthored with Juho Park, Jan. 2013

    Samsung Humantech Paper Award (Bronze), coauthored with Heejung Yu, Feb. 2011

    Representative of Korean Young IT Engineers and Researchers Appointed by KISTEP

    for the 1st Korea, China, Japan Young Researchers’ Workshop, held together with

    Korea, China, Japan Summit Meeting, May 2010

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    JCCI 2010 Best Paper Award, coauthored with Juho Park, Apr. 2010

    ICASSP 2005 Best Student Paper Award, May 2005

    JOURNAL AND TOP CS CONFERENCE PUBLICATION

    Classification by Research Theme

    Statistical Signal Processing, Statistical Inference and Machine Learning

    Reinforcement Learning

    [M.1],[M.2],[M.3],[M.4],[M.5],[M.6],[M.7],[42]

    Large Deviations on Detection of Correlated Random Processes/Fields

    [5], [6], [7], [8], [10], [21]

    Contiguity and Local Asymptotic Normality (LAN) on Parametric Statistical Models

    [4], [11]

    Signal Processing for Communications

    MIMO Communication

    Massive MIMO and mmWave Massive MIMO

    Multi-user MIMO downlink scheduling and system aspects

    [33], [35], [38], [39]

    Pilot signal design and channel estimation

    [29], [31], [34], [41], [43]

    Beamformer design and adaptive algorithms

    [22], [32]

    MIMO Interference/Broadcast Channels

    High diversity reliable multi-user MIMO communication

    [40]

    Interference alignment: Fast adaptive algorithms and outage analysis

    [14], [15], [16], [17], [20], [27]

    Pareto-optimal beamforming for MISO/MIMO interference channels

    [23], [26]

    New Multiple Access and Waveforms

    [36], [37], [39]

    Filter-and-Forward Relays

    [18], [19], [24], [25], [28]

    Blind Signal Processing for Communications

    [1], [2], [3], [9], [30]

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    Chronological List

    Machine Learning Conferences

    < Submitted >

    M.7 Woojun Kim and Youngchul Sung, “A maximum mutual information framework for multi-agent

    reinforcement learning,” submitted to NeurIPS 2020, Jun. 2020

    Available at https://arxiv.org/abs/2006.02732

    M.6 Sungho Choi, Seungyul Han and Youngchul Sung, “Cross-domain imitation learning with a dual structure,”

    submitted to NeurIPS 2020, Jun. 2020

    Available at https://arxiv.org/abs/2006.01494

    M.5 Seungyul Han and Youngchul Sung, “Diversity actor-critic: Sample-aware entropy regularization for

    sample-efficient exploration,” submitted to NeurIPS 2020, Jun. 2020

    Available at https://arxiv.org/pdf/2006.01419.pdf

    < Published or Accepted >

    M.4. Whiyoung Jung, Giseung Park, and Youngchul Sung, “Population-guided parallel policy search

    for reinforcement learning,” International Conference on Learning Representations (ICLR), Apr. 2020

    (Samsung Humantech Paper Award, Silver in the CS Division)

    M.3. Seungyul Han and Youngchul Sung, “AMBER: Adaptive multi-batch experience replay for

    continuous action control,” IJCAI Workshop on Scaling Up Reinforcement Learning,

    Macao, China, Aug. 2019

    M.2. Seungyul Han and Youngchul Sung, “Dimension-wise importance sampling weight clipping for

    sample-efficient reinforcement learning,” ICML 2019, Long Beach, CA, USA, Jun. 2019

    M.1. Woojun Kim, Myungsik Cho, and Youngchul Sung, “Message-dropout: An efficient training method for

    multi-agent deep reinforcement learning,” AAAI 2019, Honolulu, Hawaii, Jan. 2019

    (Samsung Humantech Paper Award in the CS Division)

    International Journals (*Asterisks Denote Corresponding Authors.)

    < Published or Accepted >

    41. Song Noh, Jiho Song, and Youngchul Sung*, “Fast beam search and refinement for millimeter-wave

    massive MIMO based on two-level phased arrays ,” accepted to IEEE Transactions on Wireless

    Communications, Jun. 2020

    40. Junyeong Seo, Youngchul Sung*, and Hamid Jafarkhani, “A high-diversity transceiver design for MISO

    broadcast channels,” IEEE Transactions on Wireless Communications, vol. 18, no. 5, pp. 2591 – 2606,

    May 2019

    39. Junyeong Seo and Youngchul Sung*, “Beam design and user scheduling for non-orthogonal multiple access

    with multiple antennas based on Pareto-optimality,” IEEE Transactions on Signal Processing,

    vol. 66, no. 11, pp. 2876 – 2891, Jun. 2018

    38. Gilwon Lee and Youngchul Sung*, “A new approach to user scheduling in massive multi-user MIMO

    broadcast channels,” IEEE Transactions on Communications, vol. 66, no. 4, pp. 1481 – 1495, Apr. 2018

    37. Seungyul Han, Youngchul Sung*, and Yong H. Lee, “Filter design for generalized frequency-division

    multiplexing” IEEE Transactions on Signal Processing, vol. 65, no. 7, pp. 1644 – 1659, Apr. 2017

    36. Jungho So and Youngchul Sung*, “Improving non-orthogonal multiple access by forming relaying

    broadcast channels,” IEEE Communications Letters, vol. 20, no. 9, pp. 1816 – 1819, Sep. 2016

    https://arxiv.org/abs/2006.02732https://arxiv.org/abs/2006.01494https://arxiv.org/pdf/2006.01419.pdf

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    35. Gilwon Lee, Youngchul Sung*, and Marios Kountouris, “On the performance of random beamforming

    in sparse millimeter wave channels,” IEEE Journal of Selected Topics in Signal Processing,

    Special Issue on Millimeter Wave Wireless Communications, vol. 10, no. 3, pp. 560 – 575, Apr. 2016

    34. Junyeong Seo, Youngchul Sung*, Gilwon Lee, and Donggun Kim, “Training beam sequence design for

    millimeter-wave MIMO systems: A POMDP framework,” IEEE Transactions on Signal Processing,

    vol. 64, no. 5, pp. 1228 – 1242, Mar. 2016 (Samsung Humantech Paper Award)

    33. Gilwon Lee, Youngchul Sung*, and Junyeong Seo, “Randomly-directional beamforming in mm-wave

    multi-user MISO downlink,” IEEE Transactions on Wireless Communications, vol. 15, no. 2,

    pp. 1086 – 1100, Feb. 2016 (Samsung Humantech Paper Award)

    32. Donggun Kim, Gilwon Lee, and Youngchul Sung*, “Two-stage beamformer design for massive MIMO

    downlink by trace quotient formulation,” IEEE Transactions on Communications, vol. 63, no. 6,

    pp. 2200 – 2211, Jun. 2015

    31. Jungho So, Donggun Kim, Yuni Lee, and Youngchul Sung*, “Pilot signal design for massive MIMO

    systems: A received signal-to-noise-ratio-based approach,” IEEE Signal Processing Letters, vol. 22,

    no. 5, pp. 549 – 553, May 2015

    30. Song Noh, Youngchul Sung*, and Michael Zoltowski, “A new precoder design for blind channel estimation

    for MIMO-OFDM systems,” IEEE Transactions on Wireless Communications, vol. 13, no. 12,

    pp. 7011–7024, Dec. 2014

    29. Song Noh, Michael Zoltowski, Youngchul Sung*, and David Love, “Pilot beam pattern design for

    channel estimation in massive MIMO systems,” IEEE Journal of Selected Topics in Signal Processing,

    Special Issue on Signal Processing for Large-Scale MIMO, vol. 8, no. 5, pp. 787 – 801, Oct. 2014.

    28. Donggun Kim, Youngchul Sung*, and Jihoon Chung, “Filter-and-forward relay design for MIMO-ODFM

    systems,” IEEE Transactions on Communications, vol. 62, no. 7, pp. 2329 – 2339, Jul. 2014

    27. Junse Lee, Heejung Yu and Youngchul Sung*, “Beam tracking for interference alignment in slowly-fading

    MIMO interference channels: A conjugate gradient based approach,” IEEE Transactions on Vehicular

    Technology, vol. 63, no. 2, pp. 958 – 964, Feb. 2014

    26. Juho Park and Youngchul Sung*, “On the Pareto-optimal beam structure and design for multi-user

    MIMO interference channels,” IEEE Transactions on Signal Processing, vol. 61, no.23,

    pp. 5932 – 5946, Dec. 2013 (Samsung Humantech Paper Award, Silver)

    25. Donggun Kim, Junyeong Seo and Youngchul Sung*, “Filter-and-forward transparent relay design for

    OFDM systems,” IEEE Transactions on Vehicular Technology, vol. 62, no. 9, pp. 4392 – 4407,

    Nov. 2013

    24. Yingbo Hua*, Daniel W. Bliss, Saeed Gazor, Yue Rong, and Youngchul Sung, “Guest Editorial: Theories

    and methods for advanced wireless relays – Issue II,” IEEE Journal on Selected Areas in

    Communications, vol. 31, no. 8, pp. 1361 – 1367, Aug. 2013

    23. Juho Park, Gilwon Lee, Youngchul Sung* and Masahiro Yukawa, “Coordinated beamforming with

    relaxed zero forcing: The sequential orthogonal projection combining method and rate control,”

    IEEE Transactions on Signal Processing, vol. 61, no. 12, pp. 3100-3112, Jun. 2013

    22. Masahiro Yukawa, Yongchul Sung* and Gilwon Lee, “Dual-domain adaptive beamformer under

    Linearly and quadratically constrained minimum variance,” IEEE Transactions on Signal Processing,

    vol. 61, no. 11, pp. 2874 – 2886, Jun. 2013

    21. Yuni Lee and Youngchul Sung*, “Generalized Chernoff information for mismatched Bayesian detection

    and its application to energy detection,” IEEE Signal Processing Letters, vol. 19, no. 11,

    pp. 753 – 756, Nov. 2012

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    20. Juho Park, Youngchul Sung*, Donggun Kim and H. Vincent Poor, “Outage probability and outage-based

    robust beamforming for MIMO interference channels with imperfect channel state information,”

    IEEE Transactions on Wireless Communications, vol. 11, no. 10, pp. 3561 – 3573, Oct. 2012

    19. Yingbo Hua*, Daniel W. Bliss, Saeed Gazor, Yue Rong, and Youngchul Sung, “Guest Editorial: Theories

    and methods for advanced wireless relays – Issue I,” IEEE Journal on Selected Areas in

    Communications, vol. 30, no. 8, pp. 1297 – 1303, Sep. 2012

    18. Cheulsoon Kim, Youngchul Sung* and Yong H. Lee, “A joint time-invariant filtering approach to

    the linear Gaussian relay problem,” IEEE Transactions on Signal Processing, vol. 60, no. 8,

    pp. 4360 – 4375, Aug. 2012

    17. Haksoo Kim, Heejung Yu, Youngchul Sung* and Yong H. Lee, “An efficient algorithm for zero-forcing

    coordinated beamforming,” IEEE Communications Letters, vol. 16, no. 7, pp. 994 – 997, Jul. 2012

    16. Youngseok Oh, Heejung Yu, Yong H. Lee and Youngchul Sung*, “A nonlinear transceiver architecture for

    overloaded multiuser MIMO interference channels,” IEEE Transactions on Communications, vol. 60,

    no. 4, pp. 946 – 951, Apr. 2012

    15. Heejung Yu, Youngchul Sung*, Haksoo Kim and Yong H. Lee, “Beam tracking for interference alignment in

    slowly-fading MIMO interference channels: A perturbations approach under a linear framework,”

    IEEE Transactions on Signal Processing, vol. 60, no. 4, pp. 1910 – 1926, Apr. 2012

    14. Heejung Yu and Youngchul Sung*, “Least squares approach to joint beam design for interference alignment

    in multiuser multi-input multi-output interference channels,” IEEE Transactions on Signal Processing,

    vol. 58, no. 9, pp. 4960 – 4966, Sep. 2010 (Samsung Humantech Paper Award)

    13. Jo Woon Chong, Dan K. Sung* and Youngchul Sung, “Cross-layer performance analysis for

    CSMA/CA Protocols: Impact of imperfect sensing,” IEEE Transactions on Vehicular Technology,

    vol. 59, no. 3, pp. 1100 – 1108, Mar. 2010

    12. Jo Woon Chong, Youngchul Sung* and Dan K. Sung, “RawPEACH: Multi-band CSMA/CA-based

    cognitive radio networks,” Journal of Communications and Networks, vol. 11, no. 2,

    pp. 174 – 185, Apr. 2009

    Early Works: CDMA and Detection/Estimation

    11. Yirang Lim, Juho Park and Youngchul Sung*, “Upper bound for the loss of energy detection of signals

    in multipath fading channels,” IEEE Signal Processing Letters, vol. 16, no. 11, pp. 949 – 952,

    Nov. 2009

    10. Youngchul Sung*, H. Vincent Poor and Heejung Yu, “How much information can one get from a

    wireless ad hoc sensor network over a correlated random field?” IEEE Transactions on Information

    Theory, vol. 55, no. 6, pp. 2827 – 2847, Jun. 2009

    9. Youngchul Sung*, Yirang Lim, Lang Tong and Alle-Jan van der Veen, “Signal processing advances for

    3G CDMA: From rake receivers to blind techniques,” IEEE Communications Magazine, vol. 47, no. 1,

    pp. 48 – 54, Jan. 2009

    8. Youngchul Sung*, Xin Zhang, Lang Tong and H. Vincent Poor, “Sensor configuration and activation

    for field detection in large sensor arrays,” IEEE Transactions on Signal Processing, vol. 56, no. 2,

    pp. 447-463, Feb. 2008

    7. Youngchul Sung*, Saswat Misra, Lang Tong and Anthony Ephremides, “Cooperative routing for

    distributed detection in large sensor networks,” IEEE Journal on Selected Areas in Communications,

    vol. 25, no. 2, pp. 471 – 483, Feb. 2007

    6. Youngchul Sung, Saswat Misra, Lang Tong* and Anthony Ephremides, “Signal processing for application

    specific ad hoc networks," IEEE Signal Processing Magazine, vol. 23, no. 5, pp. 74 – 83, Sep. 2006

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    5. Youngchul Sung, Lang Tong* and H. Vincent Poor, “Neyman-Pearson detection of Gauss-Markov signals

    in noise: Closed-form error exponent and properties,” IEEE Transactions on Information Theory,

    vol. 52, no. 4, pp. 1354-1365, Apr. 2006

    (This paper’s conference version won 2005 ICASSP Student Best Paper Award.)

    4. Youngchul Sung, Lang Tong* and Ananthram Swami, “Asymptotic locally optimal detector for large-scale

    sensor networks under the Poisson regime,” IEEE Transactions on Signal Processing, vol. 53,

    no. 6, pp. 2005 – 2017, Jun. 2005

    3. Youngchul Sung, Lang Tong* and Ananthram Swami, “Blind channel estimation for space-time coded

    WCDMA,” EURASIP Journal on Wireless Communications and Networking, vol. 2004, no. 2,

    pp. 322-334, Dec. 2004

    2. Youngchul Sung and Lang Tong*, “Tracking of fast-fading channels in long code CDMA,” IEEE

    Transactions on Signal Processing, vol. 52, no. 3, pp. 786-795, Mar. 2004

    1. Lang Tong*, Alle-Jan van der Veen, Patrick Dewilde and Youngchul Sung, “Blind decorrelating rake

    receiver for long code WCDMA,” IEEE Transactions on Signal Processing, vol. 51, no. 6,

    pp. 1642-1655, Jun. 2003

    Korean Articles

    7. G. Park, S. Park, J. Seo, J. So, W. Wang, S. Yoo, S. Lim, J. Chung, M. Cho, D. Ha, J. Kang, H. Park,

    and Y. Sung, “5G K-SimLink,” The Journal of Korean Institute of Communications and

    Information Sciences, Vol. 44, no. 3, Mar. 2019

    6. J. Chung, J. So, J. Seo, G. Par, and Y. Sung*, “Introduction to 5G mmWave Communication,”

    Special Series on 5G, Technology Trends, pp. 1 – 14, National IT Industry Promotion Agency (NIPA),

    Apr. 2018

    (an invited article)

    5. Youngchul Sung*, “An introduction to multiple access in wireless communications,” KICS Information and

    Communication Magazine – Open Lecture Series, vol. 33, no. 6, pp. 10 – 17, Jun. 2016

    (an invited article)

    4. Jihoon Chung, Donggun Kim, and Youngchul Sung*, “Design of amplify-and-forward helper stations for

    Cellular networks with device-to-device links,” The Journal of Korean Institute of Communications and

    Information Sciences, vol. 41, no. 5, pp. 539 – 545, May 2016

    3. Gilwon Lee, Youngchul Sung*, Jungho So, and Junyeong Seo, “Research trends for realization of 5G massive

    MIMO,” IEEK Magazine, Oct. 2015

    (an invited article)

    2. Heejung Yu, Juho Park, Youngchul Sung*, and Yong H. Lee, “Research trends in interference alignment

    for multi-user interference channels,” IEEK Magazine, pp. 204 – 216, Apr. 2013

    (an invited article)

    1. Youngchul Sung*, Juho Park, and Donggun Kim, “Trends and advances in multi-cell MISO/MIMO

    technologies,” KICS Information and Communication Magazine, pp. 11 – 18, Aug. 2012

    (an invited article)

    BOOKS AND BOOK CHAPTERS

    4. Gilwon Lee and Youngchul Sung, “MAC scheduler for mmWave massive MIMO,” in MmWave Massive

    MIMO: A Paradigm for 5G, edited by Shahid Mumtaz, Jonathan Rodriquez and Linglong Dai,

    Elsevier, ISBN 9780128044186, London, UK, 2016

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    3. Changwon Sung, “不慍堂集 (BulOnDangJib),” a 17C Chosun anthology of 寒岡門人 BulOnDang (不慍堂) Changwon Sung (成昌遠), translated by Baekhyo Sung (成百曉) and edited by

    Youngchul Sung (成靈哲), Changsin Press, ISBN 978-89-98009-04-5, Korea, 2015.

    2. Youngchul Sung, “Interference Control Technologies,” in Next Generation Tactical Information and

    Communication, edited by Jong Myung Lee et al., Hongreusng Science Publisher, Seoul, Korea,

    ISBN 979-11-5600-011-2, Korea, 2014

    1. Youngchul Sung, Tae-Eung Sung, Brian M. Sadler and Lang Tong, “Training/optimal training signal design for MIMO,” in Space-Time Wireless Systems: From Array Processing to MIMO communications, edited

    by A.-J. van der Veen, H. Bolcskei, D. Gesbert and C. Papadias, Cambridge University Press,

    ISBN 978-0521851053, 2006

    CONFERENCE PAPERS

    International Conferences

    54. Whiyoung Jung, Giseung Park, and Youngchul Sung, “Population-guided parallel policy search

    for reinforcement learning,” accepted to International Conference on Learning Representations

    (ICLR) 2020 (Samsung Humantech Paper Award)

    53. Seungyul Han and Youngchul Sung, “AMBER: Adaptive multi-batch experience replay for continuous

    action control,” the 2nd Workshop on Scaling Up Reinforcement Learning (SURL), IJCAI 2019,

    Macao, China, Aug. 2019

    52. Seungyul Han and Youngchul Sung, “Dimension-wise importance sampling weight clipping for

    sample-efficient reinforcement learning,” ICML 2019, Long Beach, CA, USA, Jun. 2019

    51. Woojun Kim, Myungsik Cho, and Youngchul Sung, “Message-dropout: An efficient training method for

    multi-agent deep reinforcement learning,” AAAI 2019, Honolulu, Hawaii, Jan. 2019

    (Samsung Humantech Paper Award)

    50. G. Park, S. Park, J. Seo, J. So, W. Wang, S. Yoo, S.-C. Lim, J. Chung, M.Cho, D. Ha, J. Kang, H. Park,

    and Y. Sung, “5G K-simulator: Link level simulator for 5G,” IEEE DySPAN, Oct. 2018

    49. Jungho So and Youngchul Sung, “Common pilot signal design for non-orthogonal multiple access in 5G,”

    IEEE TENCON 2018, Oct. 2018

    48. Whiyoung Jung and Youngchul Sung, “Facial expression classification with universum data,”

    the 5th International Conference on Robot Intelligence Technology and Applications (RiTA),

    Daejeon, South Korea, Dec. 2017

    47. Yongjin Kwon, Jihoon Chung, and Youngchul Sung, “Hybrid beamformer design for mmWave wideband

    multi-user MIMO-OFDM systems,” an invited paper to SPAWC 2017, Sapporo, Japan, Jul. 2017

    46. Junyeong Seo and Youngchul Sung, “A new transceiver architecture for multi-user MIMO communication

    based on mixture of linear and non-linear reception,” SPAWC 2017, Sapporo, Japan, Jul. 2017

    45. Gilwon Lee, Jungho So, and Youngchul Sung, “Impact of training on mmWave multiuser MIMO

    downlink,” GlobalSIP, Dec. 2016

    44. Gilwon Lee and Youngchul Sung, “Random beamforming combined with receive beamforming in mmWave

    multiuser MIMO downlink,” URSI Asia-Pacific Radio Science Conference, Aug. 2016

    43. Gilwon Lee, Youngchul Sung, and Marios Kountouris, “How can one efficiently schedule users in mmWave

    massive MIMO?” IEEE Communication Theory Workshop, Nafplio, Greece, May 2016

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    42. Gilwon Lee, Youngchul Sung, and Junyeong Seo, “How many users are needed for non-trivial performance

    of random beamforming in highly-directional mm-wave MIMO downlink”, IEEE Information Theory

    Workshop, Jeju, Korea, Oct. 2015

    41. Gilwon Lee, Youngchul Sung, and Marios Kountouris, “On the performance of randomly directional

    beamforming between line-of-sight and rich scattering channels”, invited paper to Special Session on

    Signal Processing for Millimeter Wave Communication Systems, SPAWC 2015, Jun. 2015

    40. Junyeong Seo, Youngchul Sung, Gilwon Lee, and, Donggun Kim, “Pilot beam sequence design for channel

    estimation in millimeter-wave MIMO systems: A POMDP framework”, SPAWC 2015, Jun. 2015

    39. Sangwoon Kwak, Jungho So, and Youngchul Sung, “An extended least difference greedy clique-cover

    algorithm for index coding,” ISIT 2014, Honolulu, HI, Jun. 2014

    38. Jungho So, Sangwoon Kwak, and Youngchul Sung, “Some new results on index coding when the number of

    data is less than the number of receivers,” ISIT 2014, Honolulu, HI, Jun. 2014

    37. Gilwon Lee and Youngchul Sung, “Asymptotically optimal simple user scheduling for massive MIMO

    Downlink with two-stage beamforming,” SPAWC 2014, Toronto, Canada, Jun. 2014

    36. Song Noh, Michael Zoltowski, Youngchul Sung, and David Love, “Training signal design for

    channel estimation in massive MIMO systems,” ICASSP 2014, Florence, Italy, May 2014

    35. Song Noh, Michael Zoltowski, Youngchul Sung, and David Love, “Optimal pilot beam pattern design for

    massive MIMO systems,” Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA,

    Nov. 2013

    34. Juho Park and Youngchul Sung, “An efficient parameterization for Pareto-optimal beamformers for K-user

    MIMO interference channels,” in Proc.of ICASSP 2013, Vancouver, Canada, May 2013

    33. Gilwon Lee, Juho Park, Youngchul Sung and Junyeong Seo, “A new approach to beamformer design for

    massive MIMO systems based on k-regularity,” International Workshop on Emerging Technologies

    for LTE-Advanced and Beyond 4G in conjunction with Globecom 2012, Anaheim, CA, Dec. 2012

    32. Donggun Kim, Junyeong Seo and Youngchul Sung, “Filter-and-forward relay design for OFDM systems

    with quality-of-service improvement” APSIPA Annual Summit and Conference 2012, Hollywood, CA,

    Dec. 2012

    31. Cheulsoon Kim, Eui-Rim Jeong, Youngchul Sung and Yong H. Lee, “Asymmetric complex signaling for

    full-duplex decode-and-forward relay channels,” International Conference on ICT Convergence,

    Jeju, Korea, Oct. 2012

    30. Yuni Lee and Youngchul Sung, “The Bahadur efficiency of energy detection of stationary Gaussian

    processes,” in Proc. of 2012 ICASSP, Kyoto, Japan, Mar. 2012.

    29. Juho Park, Donggun Kim and Youngchul Sung, “Sum outage-rate maximization for MIMO

    interference channels,” in Proc. of 2011 Globecom, Dec. 2011

    28. Gilwon Lee, Juho Park, Youngchul Sung and Masahiro Yukawa, “Coordinated beamforming with relaxed

    zero forcing,” 2011 IEEE International Conference on Wireless Communications and Signal Processing

    (WCSP), Nov. 2011 (Invited Paper)

    27. Masahiro Yukawa, Youngchul Sung and Gilwon Lee, “Adaptive interference suppression in MIMO multiple

    access channels based on dual-domain approach,” in Proc. of the 26th International Technical

    Conference on Circuits/Systems, Computers and Communications (ITC-CSCC), Gyeongju, Korea,

    Jun. 2011

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    26. Junse Lee, Heejung Yu, Youngchul Sung and Yong H. Lee, “Adaptive beam tracking for interference

    alignment in time-varying MIMO interference channels: Conjugate gradient approach,’’ in Proc. of

    ICASSP 2011, Prague, Czech Republic, May 2011

    25. Song Noh and Youngchul Sung, “Precoder design for semi-blind channel estimation for OFDM systems,” in

    Proc. of APSIPA 2010, Singapore, Dec. 2010

    24. Heejung Yu and Youngchul Sung, “Iterative algorithm for interference alignment in multiuser MIMO

    interference channels,” in Proc. of SPAWC 2010, Marrakech, Morocco, Jun. 2010

    23. Heejung Yu, Youngchul Sung, Haksoo Kim and Yong H. Lee, “Adaptive beam tracking for interference

    alignment for multiuser time-varying MIMO interference channels,” in Proc. of ICASSP 2010,

    Dallas, TX, Mar. 2010

    22. Heejung Yu, Juho Park, Youngchul Sung and Yong H. Lee, “A least squares approach to joint beam design

    for interference alignment in multiuser interference channels,” in Proc. of SPAWC 2009,

    Perugia, Italy, Jun. 2009

    21. Jowoon Chong, Youngchul Sung and Dan K. Sung, “'Multi-band CSMA/CA-based cognitive radio

    networks,” in Proc. of IWCMC 2009, Leipzig, Germany, Jun. 2009

    20. Haksoo Kim, Sungho Choi, Youngchul Sung and Yong H. Lee, “Amplify-forward relays with superimposed

    pilot signals for frequency-selective fading channels,” in Proc. of VTC 2009, Barcelona, Apr. 2009

    19. Yirang Lim and Youngchul Sung, “Upper bound for the loss factor of energy detection of random signals in

    multipath fading cognitive radio,” in Proc. of ICASSP 2009, Taipei, Taiwan, Apr. 2009

    18. Jowoon Chong, Youngchul Sung and Dan K. Sung, "Analysis of CSMA/CA systems under carrier sensing

    error: Throughput, delay and sensitivity," in Proc. of IEEE Globecom 2008, New Orleans, LA,

    Nov. 2008

    17. Heejung Yu, Youngchul Sung and Yong H. Lee, “Superposition data transmission for cognitive radios:

    Performance and algorithms,” in Proc. of IEEE MILCOM 2008, San Diego, CA, Nov. 2008

    16. Youngchul Sung, H. Vincent Poor and Heejung Yu, “Optimal node density for two-dimensional sensor

    arrays,” in Proc. of IEEE Workshop of Sensor Array and Multi-Channel Signal Processing (SAM 2008),

    Darmstadt, Germany, Jul. 2008

    15. Youngchul Sung, H. Vincent Poor and Heejung Yu, “Information, energy and density for ad hoc sensor

    networks over correlated random fields: Large deviations analysis,” in Proc. of ISIT 2008, Toronto,

    Ontario, Canada, Jul. 2008

    14. Jowoon Chong, Youngchul Sung and Dan K. Sung, "Cross-layer performance analysis for CSMA/CA

    systems: Impact of imperfect sensing," in Proc. of the 9th IEEE Workshop on Signal Processing

    Advances in Wireless Communications (SPAWC), Recife, Brazil, Jul. 2008

    13. Youngchul Sung, H. Vincent Poor and Heejung Yu, “Large deviations analysis for the detection of 2D

    hidden Gauss-Markov random fields using sensor networks,” in Proc. of ICASSP 2008,

    Las Vegas, Nevada, Mar. 2008

    12. Heejung Yu, Youngchul Sung and Yong H. Lee, “On optimal operating characteristics of sensing and

    training for cognitive radios,” in Proc. of ICASSP 2008, Las Vegas, Nevada, Mar. 2008

    11. Youngchul Sung, Lang Tong, and Anthony Ephremides, “A new metric for routing in multi-hop wireless

    sensor networks for detection of correlated random fields,” in Proc. of MILCOM’05, Atlantic City,

    New Jersey, Oct. 2005

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    10. Youngchul Sung, Lang Tong, and H. Vincent Poor, “Neyman-Pearson detection of Gauss-Markov signals

    in noise: Closed-form error exponent and properties,” in Proc. of 2005 IEEE International

    Symposium on Information Theory, Adelaide, Australia, Sep. 2005

    9. Youngchul Sung, Lang Tong, and H. Vincent Poor, “Optimal and suboptimal detection of Gaussian signals

    in noise: Asymptotic relative efficiency,” in Proc. of the Conference on Advanced Signal Processing

    Algorithms, Architectures, and Implementations XV, part of SPIE International Symposium, San Diego,

    CA, Jul. 2005

    8. Youngchul Sung, Lang Tong, and H. Vincent Poor, “A large deviations approach to sensor scheduling for

    detection of correlated random fields,” in Proc. of ICASSP 2005, Philadelphia, PA, Mar. 2005

    (Student Best Paper Award in ICASSP 2005)

    7. Youngchul Sung, Lang Tong, and Anthony Ephremides, “Route selection for detection of correlated random

    fields in large sensor networks,” in Proc. of CISS’05, Johns Hopkins University, Baltimore, MD,

    Mar. 2005

    6. Youngchul Sung, Lang Tong, and Ananthram Swami, “Asymptotic locally optimal detector for large-scale

    sensor networks under the Poisson regime,” in Proc. of 2004 ICC, Paris, France, Jun. 2004

    5. Youngchul Sung, Lang Tong, and Ananthram Swami, “Locally asymptotically optimal detector for large-

    scale sensor networks,” in Proc. of 2004 ICASSP, Montreal, QC, Canada, May 2004

    4. Youngchul Sung, Lang Tong, and Ananthram Swami, “Semi-blind channel estimation for space-time coded

    WCDMA downlink,” in Proc. of 2003 ICC, Anchorage, AK, May 2003

    3. Youngchul Sung and Lang Tong, “A new blind tracking for long code WCDMA with linear interpolation

    model,” in Proc. of 2002 Asilomar Conference, Monteray, CA, Nov. 2002

    2. Youngchul Sung and Lang Tong, “Channel tracking for long code WCDMA,” in Proc. of 2002 MILCOM,

    Anaheim, CA, Oct. 2002

    1. Youngchul Sung and Lang Tong, “A projection-based semi-blind channel estimation for long-code

    WCDMA,” in Proc. of 2002 ICASSP, Orlando, FL, May 2002

    Korean Conferences and Workshops

    19. G. Park, S. Park, J. Seo, J. So, W. Wang, S. Yoo, S. Lim, J. Chung, M. Cho, D. Ha, J. Kang, H. Park,

    and Y. Sung, “Link-level simulator for 5G NSA,” Joint Conference on Communications &

    Information (JCCI), Yeosoo, May 2018

    18. G. Park, S. Park, J. Seo, J. So, W. Wang, S. Yoo, S. Lim, J. Chung, M. Cho, D. Ha, J. Kang, H. Park,

    and Y. Sung, “Design of modular link-level simulator for 5G,” Korean Institute of

    Communications and Information Sciences (KICS) Winter Conference, Kwangwon, Jan. 2018

    17. W. Kim, G, Park, S. Park, J. Seo, J. So, S. Yoo, S. Lim, J. Chung, D. Ha, J. Kang, H. Park, and Y. Sung,

    “Development of open-source modular link-level simulator for pre-5G,” Korean Institute of

    Communications and Information Sciences (KICS) Summer Conference, Jeju, Jun. 2017

    16. Gilwon Lee, Jungho So, and Youngchul Sung, “A new hierarchical beam training method for millimeter-

    wave communication,” Joint Conference on Communications & Information (JCCI), Apr. 2017

    15. Seungyeol Han and Youngchul Sung, “Filter optimization for generalized frequency division multiplexing,”

    Joint Conference on Communications & Information (JCCI), Apr. 2016

    14. Gilwon Lee and Youngchul Sung, “Improved random beamforming in mmWave channels,”

    Joint Conference on Communications & Information (JCCI), Apr. 2016

    13. Gilwon Lee, Youngchul Sung, Junyeong Seo, “Random beamforming in mmWave channels,”

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    Joint Conference on Communications & Information (JCCI), Apr. 2015

    12. Jihoon Chung, Donggun Kim, and Youngchul Sung, “Optimal design of amplify-and-forward helper

    Stations for cellular networks with device-to-device links,” Korean Institute of Communications and

    Information Sciences (KICS), Fall Conference, Apr. 2014

    11. Jihoon Chung, Junyeong Seo, Donggun Kim, Youngchul Sung, “Efficient direction-of-arrival estimation

    based on mm wave channel modeling,” Joint Conference on Communications & Information (JCCI),

    Apr. 2014

    10. Song Noh and Youngchul Sung, “Linear precoder design for blind channel estimation for MIMO-OFDM

    systems under a sparse structure,” IEEK 2011 Summer Conference, Jeju, Korea, Jun. 2011

    9. Donggun Kim, Juho Park and Youngchul Sung, “Robust beam design in multi-input multi-output

    interference channels based on mean square error,” Joint Conference on Communications & Information

    (JCCI), May 2011

    8. Cheulsoon Kim, Youngchul Sung and Yong H. Lee, “Interference-symbol-based user cooperation scheme,”

    Joint Conference on Communications & Information (JCCI), May 2011

    7. Juho Park and Youngchul Sung, “Interference alignment in asymmetric multi-input multi-output

    interference channels,” Joint Conference on Communications & Information (JCCI),

    Apr. 2010. (Best Paper Award in JCCI 2010)

    6. Heejung Yu, Youngchul Sung and Yong H. Lee, “Joint optimization of transmit power and operating point

    of channel sensingfor cognitive radio networks,” Joint Conference on Communications &

    Information (JCCI), Apr. 2010

    5. Haksoo Kim, Heejung Yu, Youngchul Sung and Yong H. Lee, “Bilinear programming approach to

    interference alignment,” KICS Fall Workshop, Nov. 2009

    4. Heejung Yu, Juho Park, Youngchul Sung and Yong H. Lee, “A non-iterative approach to beam design for

    interference alignment for multiuser interference channels,” KICS CITS Workshop, Daejeon, Korea,

    Feb. 2009

    3. Haksoo Kim, Heejung Yu, Youngchul Sung and Yong H. Lee, “Analysis of point-to-point communication

    coexisting with OFDM-based cellular systems,” the 12th Communication and Electronics Conference,

    Seoul, Oct. 2008

    2. Haksoo Kim, Sungho Choi, Youngchul Sung and Yong H. Lee, “AF relay system employing superimposed

    pilot over frequency-selective channels, Joint Conference on Communications & Information (JCCI),

    Jeju, Korea, Apr. 2008

    1. Heejung Yu, Youngchul Sung and Yong H. Lee, “Superposition data transmission for secondary users in

    cognitive radios,” Joint Conference on Communications & Information (JCCI), Jeju, Korea, Apr. 2008

    INVITED TALKS AND LECTURES

    Invited Talks, Presentations, and Lectures in Conferences, Workshops and Tutorials

    7. Youngchul Sung, “High-diversity transceiver design for ultra-reliable low latency IoT communication,”

    The 21st Northeast Asia Conference on IoT with Intelligence 2019, Beijing, China, Sep. 2019

    6. Youngchul Sung, “User scheduling and beamformer design in massive MIMO and mmWave massive MIMO,”

    a tutorial in 2017 Summer School of Information/Communication Theory and Technologies,

    IEEE Communications Society, Taipei Chapter, Taiwan, Hsinchu, Taiwan, Aug. 2017

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    5. Youngchul Sung et al., “Hybrid beamformer design for mmWave wideband multi-user MIMO-OFDM

    systems,” invited to the Special Session on Millimeter Wave Communication Systems for 5G,

    2017 IEEE SPAWC, Sapporo, Japan, Jun. 2017

    4. Youngchul Sung et al., “On the performance of randomly directional beamforming between line-of-sight and

    rich scattering channels,” invited to the Special Session on Signal Processing for Millimeter Wave

    Communication Systems, 2015 IEEE SPAWC, Stockholm, Sweden, Jun. 2015

    3. Youngchul Sung, “Coordinated beamforming with relaxed zero forcing,” invited to the Special Session on

    Interference Management Techniques, 2011 IEEE WCSP, Nanjing, China, Nov. 2011

    2. Youngchul Sung, “Korea’s roadmap for green information technology and smart grid,” at the first Korea-

    China-Japan Young Researchers’ Workshop, held together with Korea-China-Japan Summit Meeting,

    Jeju, May 2010

    1. Youngchul Sung, “Visions for smart grid,” at the Korea-China-Japan Green Technology Forum, Mar. 2010

    Invited Talks, Presentations, and Lectures at Universities

    14. Youngchul Sung, “User scheduling in mmWave massive MIMO,” at Tsinghua University, Beijing, China

    Oct. 2017 (Host: Prof. Feifei Gao)

    13. Youngchul Sung, “User scheduling in mmWave massive MIMO,” at The Hong Kong University of Science

    and Technology, Hong Kong, Aug. 2017 (Host: Prof. Vincent Lau)

    12. Youngchul Sung, “User scheduling in mmWave massive MIMO,” at City University of Hong Kong,

    Hong Kong, Aug. 2017 (Host: Prof. Ray Cheung)

    11. Youngchul Sung, “User scheduling in mmWave massive MIMO,” at The Chinese University of Hong Kong,

    Hong Kong, Aug. 2017. (Host: Prof. Jinanwei Huang/Yingjun Zhang)

    10. Youngchul Sung, “User scheduling in mmWave massive MIMO,”at National Taiwan University, Taipei,

    Taiwan, Aug. 2017 (Host: Prof. Hsuan-Jung Su/Borching Su)

    9. Youngchul Sung, “A new paradigm for adaptive beamforming for large-scale antenna arrays,” at

    Princeton University, Princeton, NJ, USA, Jul. 2013 (Host: Prof. H. Vincent Poor)

    8. Youngchul Sung, “Pareto-optimal beam design for coordinated beamforming in next generation wireless

    networks,” at University of Minnesota, Minneapolis, MN, May 2013 (Host: Prof. Georgios Giannakis)

    7. Youngchul Sung, “Algorithmic aspect of interference alignment: Adpative approaches to real practice,”

    at University of Florida, Gainesville, FL, Dec. 9, 2010 (Host: Prof. Jian Li)

    6. Youngchul Sung, “Innovations, Ricatti and Kullback-Leibler divergence,” at Niigata University, Japan,

    Oct. 22, 2010 (Host: Prof. Masahiro Yukawa)

    5. Youngchul Sung, “Algorithmic aspect of interference alignment: From iterative to recursive approaches,”

    at Texas A & M University, College Station, Texas, June 11, 2010 (Host: Prof. Shuguang Cui)

    4. Youngchul Sung, “Managing interference in next generation wireless networks,” at Tokyo Institute of

    Technology, October 8, 2009 (Host: Prof. Isao Yamada)

    3. Youngchul Sung, “Asymptotic behavior of ad hoc sensor networks for statistical inference: Large deviations

    analysis,” at Cornell University, Ithaca, NY 14853, July 2008 (Host: Prof. Lang Tong)

    2. Youngchul Sung, “Asymptotic behavior of ad hoc sensor networks for statistical inference: Large deviations

    analysis,” at University of Toronto, Toronto, Ontario, Canada, July 2008 (Host: Prof. Ben Liang)

    1. Youngchul Sung, “Fundamental limits of ad hoc sensor networks for statistical inference,” at National

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    Tsing Hua University, Hsinchu, Taiwan, March 2008 (Host: Prof. Peter Yao-Win Hong)

    Invited Talks and Lectures in Korea

    35. Youngchul Sung, “Communication, Internet-of-Things, Artificial Intelligence and Future,” at colloquium

    of The School of Business and Technology Management, KAIST, May 2020

    34. Youngchul Sung, “Past, Present and Future of Telecommunication,” Moon Soul Graduate School of Future

    Strategy, KAIST, Apr. 2020

    33. Youngchul Sung, “Telecommunication: History and Future,” Global Institute for Talented Education

    (GIFTED), KAIST, Nov. 2019

    32. Youngchul Sung, “Exponential family, divergence and related geometry,” Tutorial at the 2nd

    AI Soccer Worldcup, Daejeon, Nov. 2019

    31. Youngchul Sung, “MIMO communications,” in KICS CITS Information Theory Summer School,

    Aug. 2016

    30. Youngchul Sung, “Massive MIMO: Practical challenges and solutions,” in the 8th Future Communication

    Technology Workshop, Apr. 2014

    29. Youngchul Sung, “Introduction to analysis and measure theory,” in Lecture Series on Basic Math in

    Communications and Networking, KICS, Feb. 2012

    28. Youngchul Sung, “Space-time coding and MIMO systems,” in Error Control Coding Lecture Series,

    CITS of KICS, Feb. 2012

    27. Youngchul Sung, “The 5th generation mobile communication: New opportunity for beamforming,” in the 18th

    Wireless Communications Workshop, KICS, Feb. 2012

    26. Youngchul Sung, “Introduction to information theory,” in High Speed Digital Communications Lectures,

    Telecommunications Society of IEEK, Jan. 2012

    25. Youngchul Sung, “New opportunity for adaptive beamforming? Beamforming, projection and relaxed

    zero-forcing receivers,” in the 2nd KAIST Institute International Workshop on Smart Media, Sep. 2011

    24. Youngchul Sung, “Technologies for overcoming short distance wireless interference,” KICS- Korea Army

    Signal School Joint Workshop, Apr. 2011

    23. Youngchul Sung, “Cross-layer design concept and methodology,” in the 5th KICS Workshop on Cross-Layer

    Design in Wireless Networks, Apr. 2011

    22. Youngchul Sung, “On beamformer design for MIMO interference channels,” in the 17th Wireless

    Communications Workshop, KICS, Feb. 2011

    21. Youngchul Sung, “Introduction to information theory,” in High Speed Digital Communications Lectures,

    Telecommunications Society of IEEK, Feb. 2011

    20. Youngchul Sung, “Space-time coding and MIMO systems,” in Error Control Coding Lecture Series,

    CITS of KICS, Jan. 2011

    19. Youngchul Sung, “Information theory for MIMO wireless communications,” in Network Information Theory

    Lecture Series, CITS of KICS, Jul. 2010

    18. Youngchul Sung, “Interference in next generation wireless networks,” KRnet, Jun. 2010

    17. Youngchul Sung, “Interference alignment for interference-limited wireless networks,” in 4th Wireless

    Network Cross-Layer Design Workshop, Korea Information and Communications Society (KICS),

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    Apr. 2010

    16. Youngchul Sung, “Space-time coding and MIMO systems,” in Error Control Coding Lecture Series,

    CITS of KICS, Feb. 2010

    15. Youngchul Sung, “Introduction to information theory,” in High Speed Digital Communications Lectures,

    Telecommunications Society of IEEK, Jan. 2010

    14. Youngchul Sung, organizer of special session “Recent advances in interference channels and interference

    alignment” in KICS Fall 2009 Conference, Nov. 2009

    13. Youngchul Sung, “Large deviations analysis to asymptotic behavior of large ad hoc sensor networks,”

    KAIST and Chinese University of Hong Kong Joint Workshop, Daejeon, Korea, Jul. 2009

    12. Youngchul Sung, “Information theory for wireless communications: MIMO systems,” Korean Coding and

    Information Theory Society, Jul. 2009

    11. Youngchul Sung, “Vision for 5G mobile communication systems,” invited talk in KRnet, Jun. 2009

    10. Youngchul Sung, “Co-channel interference management,” Korea Army Signal School, Apr. 2009

    9. Youngchul Sung, “PHY-oriented cross-layer design: MIMO-OFDM based cross layer design,” 3rd

    Wireless Network Cross-Layer Design Workshop, Korea Information and Communications

    Society (KICS), Apr. 2009

    8. Youngchul Sung, “Space-time codes and MIMO systems,” Lecture Series in Error Control Codes,

    Korean Coding and Information Theory Society, Feb. 2009

    7. Youngchul Sung, “Large deviations principle and its applications,” invited lecture, Korean Coding and

    Information Theory Society Workshop, Nov. 2008

    6. Youngchul Sung, “Trends in wireless communications and related research topics,” KT Infra Research

    Center, Nov. 2008

    5. Youngchul Sung, “Cross-layer approach to wireless ad hoc sensor network design: Inference optimal design,”

    2nd Wireless Network Cross-Layer Design Workshop, Korea Information and Communications

    Society (KICS), Apr. 2008

    4. Youngchul Sung, “4G Standards: OFDM, WiMAX and LTE,” Korean Intellectual Property Office, Feb. 2008

    3. Youngchul Sung, “Multiple access and wireless standards,” KAIST EMDEC, Jan. 2008

    2. Youngchul Sung, “Principe of latest wireless communication systems,” KAIST IDEC, Nov. 2007

    1. Youngchul Sung, “MIMO-OFDM systems,” ETRI Mobile Communications Division, Oct. 2007

    FUNDED RESEARCH PROJECTS AND RECEIVED FUNDING

    Current Projects

    Research on Information Geometry-Based Performance Enhancement for Policy-Based Reinforcement

    Learning with Large Action Spaces (한국연구재단 전략과제)

    Funding Agent: National Research Foundation (NRF) of Korea

    Role : Principal Investigator

    Period : 2017.09 – 2021.08 (Total 4 years)

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    Building a Simulation Environment for Machine Learning-Based Edge Computing Operation Optimization

    Funding Agent: The Institute for Information & Communications Technology Promotion (IITP)

    Role : Principal Investigator

    Period : 2019.04 – 2021.12

    Development of Disaster Response Algorithm through Internet Big Data Analysis Based on Artificial

    Intelligence

    Funding Agent: National Research Foundation (NRF) of Korea

    Role : Co-Principal Investigator

    Period : 2019.09 – 2022.08

    Center for Applied Research in Artificial Intelligence

    Funding Agent: Agency for Defense Development (ADD)

    Role : Co-Principal Investigator

    Period : 2019.12 – 2025.12

    Research and Development of Adaptive Machine Learning Algorithms for Autonomous Digital Companion

    Funding Agent: The Institute for Information & Communications Technology Promotion (IITP)

    Role : Co-Principal Investigator

    Period : 2016.12 – 2020.12

    Past Projects

    Pattern Analysis and Anomaly Detection of AMI Smart Meter Data

    Funding Agent: KEPCO

    Role : Principal Investigator (PI)

    Period : 2016.05 – 2016.11

    Research and Development of Open 5G Reference Model – Link-Level Simulator (LLS)

    Funding Agent: The Institute for Information & Communications Technology Promotion (IITP)

    Role : Physical-Layer Link-Level - Principal Investigator (PI)

    Period : 2016.08 – 2019.02

    Giga Korea Project: Development of Millimeter-Wave 5G Mobile Communication System

    Funding Agent: ETRI

    Role : Principal Investigator (PI)

    Period : 2014.07 – 2018.04

    Development of Fundamental Technologies for User-Centric 5G Mobile Personal Cells

    Funding Agent: ETRI

    Role : Co-Principal Investigator (Co-PI)

    Period : 2013.04 – 2016.02 (Total 3 Years)

    Can Modern Communication/Network Theories Inspire Brain Reverse Engineering and

    Vice Versa?

    Funding Agent: KAIST

    Role : Co-Principal Investigator (Co-PI)

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    Period : 2011.06 – 2012.12 (Total 1 Year and 7 Months)

    Development of Adaptive Beam Multiple Access Technology without Interference Based on

    Antenna Node Grouping

    Funding Agent: Korea Communications Commission (KCC)

    Role : Co-Principal Investigator (Co-PI)

    Period : 2011.03 – 2016.02 (Total 5 Years)

    Research on Interference Problem for Future Wireless Networks for Smartphone Era

    Funding Agent: National Research Foundation of Korea (NRF)

    Role : Principal Investigator (PI)

    Phase I : 2010.09 - 2013.08 (3 Years) (우수성과 후속연구지원선정) Phase II : 2013.11 - 2016.10 (3 Years)

    Distributed Inference in Wireless Sensor Networks: Scaling Behavior and Impact of Network Topology

    Funding Agent: Korea Research Foundation (KRF)

    Role : Principal Investigator (PI)

    Period : 2009.01 – 2009.12 (Total 1 Year)

    5G Mobile Communication Systems Based on Beam Division Multiple Access and Relays with

    Group Cooperation

    Funding Agent: Dept. of MKE and Korea Communications Commission (KCC)

    Role : Co-Principal Investigator (Co-PI)

    Period : 2008.03 – 2013.02 (Total 5 Years)

    Next Generation Tactical Information and Communication Network High Mobility Technology

    Development

    Funding Agent: ETRI

    Role : Co-Principal Investigator (Co-PI)

    Period : 2008.03 – 2010.02 (Total 2 Years)

    Cognitive Autonomous Communication Based KAIST b4G System Core Technologies and Simulator

    Development

    Funding Agent: Samsung Electronics

    Role : Co-Principal Investigator (Co-PI)

    Period : 2007.05 – 2011.07

    Integrative Design Approach to Wireless and Sensor Networks

    Funding Agent: KAIST

    Role : Principal Investigator (PI)

    Period : 2007.02 – 2009.12 (Total 3 Years)

    GRADUATE STUDENT ADVISEES

    CURRENT STUDENTS

    PhD(8): Sohee Bae, Seungyul Han, Whiyoung Jung, Woojun Kim, Giseung Park, Myungsik Cho

    Sungho Choi, Jongeui Park

    MS (3): Jongseong Chae, Jeewon Jeon, Inuk Son

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    FORMER STUDENTS

    PhD Graduates (8)

    Jowoon Chong* (PhD Aug. 2009) Assistant Professor at Texas Tech Univ. USA - co-advised student

    Heejung Yu (PhD Feb. 2011) Associate Professor at Korea University - co-advised student Haksoo Kim (PhD Feb. 2013) National Security Research Institute - co-advised student

    Cheulsoon Kim (PhD Feb. 2013) ETRI- co-advised student

    Juho Park (PhD Aug. 2013) ETRI, Giga Korea Team

    Donggun Kim (PhD Aug. 2015) Samsung Electronics, DMC Standardization Team

    Gilwon Lee (PhD Aug. 2016) Samsung Research USA after Intel, San Jose & postdoc under Prof. Robert

    Heath at Univ. Texas at Austin

    Jungho So (PhD Aug. 2018) Samsung Electronics, System LSI Modem Team

    Junyeong Seo (PhD Aug. 2018) Samsung Electronics, System LSI Modem Team

    (* unofficial but actual co-advised student)

    MS Graduates (20)

    Song Noh (Feb. 2010) Assistant Professor, Incheon National University with PhD at Purdue Univ.

    Yirang Lim (Feb. 2010) Strategic Planning Team, Hana Card

    Junse Lee (Feb. 2011) Samsung Electronics with PhD at Univ. Texas, Austin, TX, USA

    Bora Lim (Feb. 2011) Samsung Electronics

    Yuni Lee (Aug. 2011) Personal Business

    Gilwon Lee (Feb. 2012) Samsung Research USA with PhD, SISReL, KAIST

    Jungho So (Feb. 2013) Samsung Electronics, 5G Modem Team with PhD, SISReL, KAIST

    Junyeong Seo (Feb. 2013) Samsung Electronics, 5G Modem Team with PhD, SISReL, KAIST

    Jihoon Chung (Feb. 2014) WorldQuant

    Sanwoon Kwak (Feb. 2014) ETRI

    Kwonhan Moon (Feb. 2015) ETRI

    Yongjin Kwon (Feb. 2016) ADD

    Seungyul Han (Feb. 2016) PhD Program at SISReL, KAIST

    Whiyoung Jung (Feb. 2017) PhD Program at SISReL, KAIST

    Hyungcheol Noh (Feb. 2018) TmaxSoft

    Woojun Kim (Feb. 2018) PhD Program at SISReL, KAIST

    Giseung Park (Aug. 2018) PhD Program at SISReL, KAIST

    Myungsik Cho (Feb. 2019) PhD Program at SISReL, KAIST

    Sungho Choi (Feb. 2020) PhD Program at SISReL, KAIST

    Jongeui Park (Feb. 2020) PhD Program at SISReL, KAIST

    TEACHING

    Special Lecture on Information Geometry (EE 827), Fall 2019, Fall 2013 School of Electrical Engineering, KAIST

    Real Analysis for Electrical Engineers (EE807), Spring 2015

    Dept. of Mathematics/Dept. of Electrical Engineering, KAIST

    Mobile Communication Engineering (EE 629), Fall 2015 Dept. of Electrical Engineering, KAIST

    Information Theory (EE 623): Fall 2011, Fall 2010

    Dept. of Electrical Engineering, KAIST

    Detection and Estimation (EE 622), Fall 2017, Fall 2014 Dept. of Electrical Engineering, KAIST

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    Advanced Communication Systems (EE 522): Fall 2009, Fall 2008, Fall 2007 Dept. of Electrical Engineering, KAIST

    Communication Systems (EE 421): Spring 2016, Spring 2009, Spring 2008, Spring 2007

    Dept. of Electrical Engineering, KAIST

    Communication Engineering (EE 321), Spring 2020, Spring 2019, Spring 2015 Dept. of Electrical Engineering, KAIST

    Introduction to Electronics Design Lab (EE305), Spring 2017, Fall 2016, Fall 2011, Fall 2010

    Signals and Systems (EE 202): Spring 2014, Spring 2012, Spring 2011, Spring 2010 Dept. of Electrical Engineering, KAIST

    Section Instructor, Digital Communications (ECE 567), Fall 2004

    School of Electrical and Computer Engineering, Cornell University

    Teaching Assistant, Detection and Estimation (ECE 564), Spring 2003

    School of Electrical and Computer Engineering, Cornell University

    PATENTS

    International Patents

    8. Y. Sung, G. Lee and J. Park, “Scheduling method and apparatus in mobile communication system,”

    US Patent 10,178,685. Registered on 2019.01.08. Joint Application with ETRI

    7. Y. Sung and G. Lee, “User scheduling and beamformer design method, apparatus, and storage medium

    based on two-stage beamformer for massive MIMO downlink,”

    US Patent 9,680,549. Registered on 2017.06.13.

    3GPP Study Item: R1-160969 (3GPP TSG RAN WG1 Meeting #84)

    6. Y. Sung, M. Yukawa, J. Park and G. Lee, “Cooperative multi-cell MIMO beamforming method based on

    relaxed zero-forcing, relaxed zero forcing transmission beamforming,”

    Patent file number: PCT/KR2012/001201, PCT file date: 2012.02.17.

    5. Y. Lee, Y. Sung, H. Yu, H. Kim, Y. Hong, and T. Kwon, “Communication system of detecting

    victim terminal and performing interference coordination in multi-cell environments,”

    US Patent 8,737,921. Registered on 2014.05.27. JP Patent 5580424. Registered on 2014.07.28

    4. W. Shin, C. Kim, C. Shin, W. Noh, H. Choi, Y. Sung and Y. Lee, “Method and apparatus of controlling

    intercell interference based on cooperation of intracell terminals,”

    US Patent 8,412,104. Registered on 2013.04.02.

    3. C. Yoon, Y. Sung, D. Cho, and D. Jeon, “Polymer substrate for flexible display having enhanced flexibility,”

    US Patent 8,167,628. Registered on 2012.5.1.

    2. T. Kwon, H. Yu, K. Jang, Y. Sung, H. Hwang, Y. Lee, and Y. Oh, “Apparatus and method for radio

    communication,”

    US Patent 8,103,217. Registered on 2012.01.24.

    1. T. Kwon, I. Lee, H. Hwang, Y. Kim, H. Choi, Y. Lee, Y. Sung, H. Yu, andY. Oh, “Pilot signal power control

    apparatus and operation method of pilot signal power control apparatus,”

    US Patent 8,099,051. Registered on 2012.01.17.

    Korean Patents

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    40. W. Kim, Y. Sung and M. Cho, “메시지 드룹아웃: 다중 에이전트 심층 강화학습 알고리즘을 위한

    효율적 학습 방법,” Patent file date: 2019.01.16, Patent file number: 10-2019-0005576

    38. Y. Sung and W. Jung, “베스트 에이전트의 정책으로 안내되는 다중 에이전트 PPO 알고리즘,” Patent file date: 2018.06.15, Patent file number: 10-2018-0068873

    37. Y. Sung, G. Lee and J. Park, “Method and apparatus for scheduling in mobile communication system,”

    Patent file date: 2015.12.18, Patent file number: 10-2015-0182245

    36. Y. Sung, H. Kim, H. Yu, and Y. H. Lee, “Adaptive limited feedback method for multi-cell time-varying

    MISO interference channels,” Patent file date: 2012.10.23. Patent file number: 10-2012-0118008

    Registered

    36. S. Han and Y. Sung, “연속 행동 공간 제어를 위한 적응형 다중-배치 경험 리플레이 기법,” Paten registration number: 10-2103644-0000. Registration date: 2020-04-16

    35. Y. Sung and S. Han, “GFDM 시스템 기반의 필터 파형 설계 방법,” Patent registration number: 10-1837609. Registration date: 2018-03-06

    34. Y. Sung and J. So, “협력 수준 증가를 통한 비직교 다중접속 기법의 확대 방법,” Patent registration number: 10-1688221. Registration date: 2016-12-14

    33. Y. Lee, Y. Sung, H. Yu, H. Kim, Y. Hong and T. Kwon, “Communication system of detecting victim

    terminal and performing interference coordination in multi-cell environments,”

    Patent registration number: 10-1666009. Registration date: 2016-10-07

    32. Y. Sung, J. So, D. Kim and Y. Lee, “Pilot signal design method for massive antenna systems,”

    Patent registration number: 10-1606159-0000. Registration date: 2016-03-18

    31. Y. Sung, J. Seo, J. Chung and G. Lee, “Reduced pilot sequence design method and device for spatially

    correlated uplink systems,”

    Patent registration number: 10-1598879-0000. Registration date: 2016-02-24

    30. W. Shin, C. Kim, C. Shin, W. Noh, H. Choi, Y. Sung, and Y. Lee, “Method and apparatus of controlling

    Intercell interference based on cooperation of intracell terminals,”

    Patent registration number: 10-1588712-0000. Registration date: 2016-01-20

    29. Y. Sung and G. Lee, “A user scheduling method, device and recording medium based on two-stage

    Beamformer for massive MIMO broadcast channels,”

    Patent registration number: 10-1562557-0000. Registration date: 2015-10-16

    28. Y. Sung, J. So, J. Park, and D. Kim, “Beamforming device and method with channel distribution information

    and interference temperature level control for MISO interference,”

    Patent registration number: 10-1488771-0000. Registration date: 2015-01-27

    27. Y. Sung and J. Seo, J. Park, G. Lee, “Zero-forcing Beamformer Design Device and Method in

    MISO Broadcast Channel Based on k-regularity,”

    Patent registration number: 10-1482925-0000. Registration date: 2015-01-07

    26. Y. Sung, D. Kim and J. Seo, “Filter-and-forward transparent relay design method for relay power

    minimization in OFDM systems,”

    Patent registration number: 10-1434457-0000. Registration date: 2014-08-20

    25. Y. Sung, D. Kim and J. Seo, “Filter-and-forward transparent relay design method

    for QoS maximization in OFDM systems,”

    Patent registration number: 10-1434456-0000. Registration date: 2014-08-20

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    24. Y. Sung and Y. Lee, “Threshold setting method for energy detector,” Patent file date: 2012.4.12,

    Patent registration number: 10-1356834. Registration date: 2014-01-22

    23. Y. Sung, J. Park, G. Lee, and J. Seo, “Beamformer design method based on k-regularity for massive

    MIMO systems,”

    Patent registration number: 10-1356633. Registration date: 2014-01-22

    22. Y. Sung, M. Yukawa, G. Lee and J. Park, “Cooperative multi-cell MIMO beamforming method based on

    relaxed zero-forcing,

    Patent registration number: 10-1308141. Registration date: 2013-09-06

    21. Y. Sung, C. S. Kim and Y. H. Lee, “Relay system based on time-invariant filter and optimizing method of

    said system,”

    Patent registration number: 10-1288536. Registration date: 2013-07-16

    20. Y. Sung, J. Park and D. Kim, “Outage-based robust beam design algorithm for MIMO interference channel

    with channel uncertainty,”.

    Patent registration number: 10-1284935, Registration date: 2013-07-04

    19. Y. Hong, W. Shin, Y. Lee, Y. Sung, H. Yu, and H. Kim, “Transmission apparatus and method for

    performing interference alignment thereof, and reception apparatus and method for operating thereof,”

    Patent registration number: 10-1708297. Registration date: 2013-05-31

    18. Y. Sung, J. Park and G. Lee, “Sequential orthogonal projection combining algorithm

    for relaxed zero-forcing beamforming,” Patent file date: 2012.1.27, Patent file number: 10-2012-0008197.

    Patent registration number: 10-1272319. Registration date: 2013-05-31

    17. Y. Sung and N. Song, “The compatibility of linear precoder for blind channel estimation and capacity optimal

    linear precoder based on MIMO-OFDM systems,”

    Patent registration number: 10-1234245. Registration date: 2013-02-12

    16. Y. Sung, D. Kim and J. Park, “Beam design algorithm in multi-input multi-output interference channels

    based on mean square error and using method thereof,”

    Patent registration number: 10-1205389. Registration date: 2012-11-21

    15. Y. Sung, H. Kim, H. Yu and Y. H. Lee, “Adaptive beam tracking method and pilot duration or channel

    feedback duration adaptation for coordinated beamforming system,”

    Patent registration number: 10-1199439. Registration date: 2012-11-02

    14. Y. Sung, J. Lee and D. Kim, “Efficient blind receiver architecture for interference alignment systems,”

    Patent registration number: 10-1172718. Registration date: 2012-08-03

    13. Y. Sung, H. Yu, H. Kim and Y. H. Lee, “Interference alignment and beam tracking for time-varying multiuser

    MIMO interference channels transmitting multiple data streams,”

    Patent registration number: 10-1172717. Registration date: 2012-08-03

    12. Y. Sung, J. Park, H. Yu, H. Kim and Y. H. Lee, “A data transmitting/receiving method and device for

    interference alignment in multi-user MIMO interference channels,”

    Patent registration number: 10-1102955. Registration date: 2011.12.29

    11. Y. Sung, H. Yu, H. Kim and Y. H. Lee, “Adaptive interference alignment for time-varying multiuser MIMO

    interference channels,”

    Patent registration number: 10-1094442. Registration date: 2011-12-08

    10. Y. Sung, J. Lee, H. Yu and Y. H. Lee, “Adaptive beam tracking for interference alignment in time-varying

    MIMO interference channels: Conjugate gradient approach,”

    Patent registration number: 10-1206881. Registration date: 2011-11-26

    9. Y. Sung, H. Yu, H. Kim, N. Song, Y. H. Lee and D. Kwon, “Method for power control and user allocation

    in wireless mesh network,”

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    Patent registration number: 10-1047039. Registration date: 2011-06-30

    8. Y. Sung, D. K. Sung and J. W. Chong, “Wireless network systems with priority class based medium access

    control,”

    Patent registration number: 10- 1040290. Registration date: 2011.06.02

    7. Y. Sung and J. W. Chong, “Wireless network system of multi-tier and communication method and apparatus

    thereof,”

    Patent registration number:10-0999039. Registration date: 2010.12.05

    6. Y. Sung, H. Yu, H. Kim, Y. Oh and Y. H. Lee, “Method inserting secondary system for OFDM-based

    primary system,”

    Patent registration number: 10-0961559. Registration date: 2010.05.17

    5. Y. Sung and others, “Differential encoding method for e-paper,”

    Patent registration number: 10-927210. Registration date: 2009.11.10

    4. D. Y. Jeon, C. S. Yoon, Y. Sung, S. Kim and H. Yoo, “Display apparatus based on fully flexible fabric

    structure,

    Patent registration number: 10-0912724. Registration date: 2009.08.11

    3. C. S. Yoon, D. Y. Jeon, Y. Sung and D. H. Cho, “Polymer plate with enhanced flexibility for flexible

    displays,” Patent registration number:10-0900458. Registration date: 2009.05.26

    2. C. Lim, Y. Sung and others, “Virtual data input method and apparatus,”

    Patent registration number: 10-0900978-0000. Registration date: 2009.05.28

    1. C. Lim, Y. Sung and others, “Flexible mobile terminal,” filed on Aug. 2007.

    Patent registration number: 10-0867608-0000. Registration date: 2008.11.03