Lte Synopsis Presentation

8/3/2019 Lte Synopsis Presentation

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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

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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.



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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.



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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

Lte Synopsis Presentation

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