Introduction to the LTE Physical Layer -...
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![Page 1: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/1.jpg)
Introduction to theLTE Physical Layer
Sandor Szilvasi06/29/2016
![Page 2: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/2.jpg)
![Page 3: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/3.jpg)
LTE-SAE Architecture
Source: Anritsu - LTE Resource Guide
![Page 4: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/4.jpg)
LTE Protocol Stack
Source: Anritsu - LTE Resource Guide
![Page 5: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/5.jpg)
Example Waveform (LTE Band 13)
UplinkDownlink
![Page 6: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/6.jpg)
System Information
1. Cell ID = 3 * n_id_1 + n_id_22. MIB3. SIB (not covered here)
![Page 7: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/7.jpg)
Downlink Channel Mapping
1
MIB SIB
3 24
Source: Erik Dahlman, Stefan Parkvall, and Johan Skold. 2013. 4G: LTE/LTE-Advanced for Mobile Broadband (2nd ed.). Academic Press.
![Page 9: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/9.jpg)
50 RBs
1 subframe(1 ms)
1 frame(10 ms)
![Page 10: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/10.jpg)
Demo
PSS
4k ...4k+1 4k+2 4k+3...
frame
subframe
SSS PBCH
Same MIB x4
![Page 11: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/11.jpg)
Open-Source Projects
● OpenAirInterface (https://gitlab.eurecom.fr/oai/openairinterface5g/)● OpenLTE (http://openlte.sourceforge.net/)● srsLTE (https://github.com/srsLTE/srsLTE)● LTE-Cell-Scanner (https://github.com/Evrytania/LTE-Cell-Scanner)● gr-lte (https://github.com/kit-cel/gr-lte)● LTEye (http://www.mit.edu/~swarun/lteyecode.html)
![Page 12: Introduction to the LTE Physical Layer - Meetupfiles.meetup.com/18094742/SandorSzilvasi_LTE_Sampler.pdf · Downlink Channel Mapping 1 MIB SIB 4 3 2 Source: Erik Dahlman, Stefan Parkvall,](https://reader030.fdocuments.us/reader030/viewer/2022021509/5a7969b17f8b9a6c158b8812/html5/thumbnails/12.jpg)
Other Resources
● E-UTRA; Physical channels and modulation (3GPP TS 36.211 Release 13)● E-UTRA; Multiplexing and channel coding (3GPP TS 36.212 Release 13)● Erik Dahlman, Stefan Parkvall, and Johan Skold. 2013. 4G: LTE/LTE-
Advanced for Mobile Broadband (2nd ed.).● Matlab LTE System Toolbox Documentation
http://www.mathworks.com/help/lte/lte-modeling-basics.html● http://niviuk.free.fr/lte_band.php● http://dhagle.in/LTE● http://www.cellmapper.net/map