Post on 06-Apr-2018
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A Pre-Thesis Synopsison
Long Term Evolution System
Guided By:
Er. Manish Mehta
Presented By:
Inderpreet Singh2709014
M.Tech(ECE)
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Introduction
LTE is a 3GPP standard that provides foran uplink speed of up to 50 megabits per
second (Mbps) and a downlink speed ofup to 100 Mbps. LTE will bring manytechnical benefits to cellular networks.
Bandwidth will be scalable from 1.25 MHzto 20MHz.
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Goals include
Significantly increase peak data rates, scaled linearlyaccording to spectrum allocation
improving spectral efficiency
lowering costs
improving services
making use of new spectrum opportunities
Improved quality of service
better integration with other open standards
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3GPP Evolution
Release 99 (2000): UMTS/WCDMA
Release 5 (2002) : HSDPA
Release 6 (2005) : HSUPA, MBMS(Multimedia Broadcast/MulticastServices)
Release 7 (2007) : DL MIMO, IMS (IP Multimedia Subsystem),optimized real-time services (VoIP, gaming, push-to-talk).
Release 8(2009?) :LTE (Long Term Evolution)
Long Term Evolution (LTE)
3GPP work on the Evolution of the 3G Mobile System started inNovember 2004.
Currently, standardization in progress in the form of Rel-8.
Specifications scheduled to be finalized by the end of mid 2008.
Target deployment in 2010
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Motivation
Need for higher data rates and greater spectral efficiency
Can be achieved with HSDPA/HSUPA
and/or new air interface defined by 3GPP LTE
Need for high quality of services
Use of licensed frequencies to guarantee quality of services
Always-on experience (reduce control plane latency significantly)
Reduce round trip delay
Need for cheaper infrastructure Simplify architecture, reduce number of network elements
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Key Features of LTE
Multiple access scheme
Downlink: OFDMA
Uplink: Single Carrier FDMA (SC-FDMA)
Adaptive modulation and coding
DL modulations: QPSK, 16QAM, and 64QAM
UL modulations: QPSK and 16QAM
Bandwidth scalability for efficient operation in differentlysized allocated spectrum bands
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FDM v/s OFDM
5/3/2012 7
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Literature Survey
Author Year Title Conclusion
Charan Langton 2004 OFDM This paper explain the OFDMtechnique and also explain the IFFT
and FFT techniques used for
OFDM symobls generation that is
to be used in LTE Model.
Erik Dahlman,Hannes Ekstrm
2005 The long-termevolution of 3G
This paper describe technologies
that promise to provide these
improvements,including orthogonal
frequency-division multiplexing
(OFDM), multi-antenna solutions,evolved quality-of-service (QoS)
and link-layer concepts, and an
evolved system architecture
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Jim Zyren 2007 Overview of the3GPP Long
Term Evolution
System
This paper contains an
overview and the basic
copncepts about LTE and
the goals that is to be
achieved with this system.Also an overview of the
physical layer of LTE is also
discussed.
Ulrich Barth 2009 3GPP LTE
systemarchitecture
This paper proposed the
system architecture used forLTE systems and discuss
this architechture with the
architechtures of other
networks.
Author Year Title Conclusion
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Eiko Seidel 2010 Progress on LTEAdvanced
the new 4G
standard
This paper Proposed an
LTE advanced 4G network
with the proposed goals of
this advanced network. Thispaper also gives us an idea
about the Structure of
advanced LTE which is to
be implemented in future.
Author Year Title Conclusion
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Objective
To design LTE Model using 64QAM-OFDM and
16QAM-OFDM technique respectively.
Furthermore I will analyse this model under differentchannel conditions on the basis of bit error rate,scatter
plots and spectrum scope.
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Methodology
Matlab Simulink
We will design an LTE Model using Matlab 7.9Simulink.
Simulink is a platform for multidomain
simulation and model-based design ofdynamic systems. It provides an interactivegraphical environment.
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THANKS