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Downlink physical channel processing for 4G LTE Wireless system. Under the Guidance of Jitender KumarPresented by Sonam Sethi. Submittedto: Dr.SPSSaini

OUTLINE INTRODUCTION. LITERATURE SURVEY. MOTIVATION OF THE PROJECT. 4G: TRANSMITTER BLOCK DIAGRAM. IDEOLOGY BEHIND THE PROJECT. VARIOUS PARAMETRS IN 4G SYSTEM. PERT CHART. FUTURE DIRECTION OF WORK.2

IntroductionLTE (Long Term Evolution) is the next step forward in wireless mobile 2G: communication often referred to as 4G services. LTE is a 3GPP standard that provides for an uplink speed of 50 Mbps and downlink speed of up to 100 Mbps. The bandwidth in this framework is also scalable from 1.25 MHz to 20 M H z. This will suit the needs of different network operators that have different bandwidth allocations and also allow operators to provide different services based on spectrum. A central part of LTE technology is appropriate processing of downlink physical channel for high throughput3

4G Technology In telecommunication, 4G is the fourth generation

of mobile phone communications standards. It is a successor of the third generation(3G) standards. A 4G system provides mobile ultra-broadband Internet access, for example to laptops with USB wireless modems, to smart phones, and to other mobile devices. Conceivable applications include amended mobile web access, IP telephony, gaming services, highdefinition mobile TV, video conferencing and 3D television.4

Review of existing literature survey Peak-Throughput of LTE-Release 10 for Up/Down Link

Physical Layer Physical layer aspects of 3GPP long term evolution Physical layer. Overview of the 3GPP long term evolution physical layer. Performance analysis of the LTE physical layer based on Release 8&9 through Simulink environment. Simulating the long term evolution physical layer.

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Motivation of the ProjectAdvancements in communication systems have always been considered as the driver of modern civilization. Today, 3G technology is widespread and although it is much better than the technologies of previous decade, it still has many shortcomings as follows :

3G performance may not be sufficient to meet needs of future high-performance applications like multi-media, full-motion video, wireless teleconferencing etc. We need a network technology that extends 3G capacity by an order of magnitude.

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Ctdd There are multiple standards for 3G making it difficult to

roam and inter-operate across networks. We need global mobility and service portability. 3G is based on primarily a wide-area concept. We need

hybrid networks that utilize both wireless LAN (hot spot) concept and cell or base-station wide area network design. We need wider bandwidth

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Difference between 3G & 4GFACTORS Driving Architecture: Network Architecture: Speeds: 3G Voice Driven Wide Area Cell Based 384 kbps to 2mbps 4G Converged data and voice over Hybrid integrated of Wireless LAN 20 -100 mbps in mobile mode

Frequency Band:Band width: Switching Design Basics:

Depend on the Country5-20 Mhz Circuit & Packet

Higher Frequency(2-8 GHZ)100 MHZ Packetized video

Acess method:

W-CDMA

OFDM/MC-CDMA

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Ideology behind the projectIn this project, we have developed a simulation model of 4G LTE system to study its implementation in the context of Indian scenario. For Indian market, any new technology must be economically feasible for better market penetration. Keeping this view in mind, we have developed implementation models that might need low investment in reality.

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Various parameters in 4G systemCHARACTERISTICS Deployment Core Network Band Below Data Rates Acess Methods Radio Interface Modulations TECHNOLOGY 2012-2015 IP based 6GHz 100mbps To 1Ghz OFDMA,SC-FDMA,OFDM-TDMA Cognitive Radios QPSK,16 QAM,64QAM,DAPSK

Duplex methodsError Control

FDD/TDDLDPC, Turbo codes, HARQ10

PERT CHARTActivities Literature Survey W1 W2 W3 W4 W5 W6 W7 W8 W9

Project Identification Study of ToolMid Term PPT Implementation Testing Result& Documentation

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4G :Block Diagram for Transmitter.A to D Converter LNA Pre Processor Multiplexer

Bit Interleaver Channel coderDAC DataCom pression

Cable

LNA

BPF

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Description of Block Diagram A to D converter: It is a device that converts a continuous

physical quantity to a digital number that quantity amplitude. LNA: Low Noise Amplifier, it is an electronic amplifier used to amplify weak signals. This active antenna arrangement is frequently used in microwave system. Channel Coder:The purpose of channel coding theory is to find codes which transmit quickly codewords or atleast detect many errors.

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Ctdd DAC: It process the analog signals digitally. Data compression: To encode data into digital form to the

analog form there is increase in bandwidth. BPF: A band pass filter is an electronic device or circuit that allows signals between two specific frequencies to pass, but that discrimination against signal at other frequencies.

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Tool Required: WE are going to use Mat lab and Simu link Software. In this project we will design the model of transmitter

and receiver of 4G system using Simu link. We will use Mat Lab Code for the Algorithm.

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Future Direction of work

We are going to design the frame format for the 4G

wireless system. Error control would be done. After all this it will run through Mat Lab using Simulink.

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References [1] M. HUSSO,4G TECHNOLOGY FEATURES AND EVOLUTION TOWARDS

IMT-ADVANCED, AALTO UNIVERSITY, ESPOO, PP.72-74, 7MAY 2010. [2] F. REZAEI, A COMPREHENSIVE ANALYSIS OF LTE PHYSICAL LAYER, UNIVERSITY OF NEBRASKA - LINCOLN, PP.3-4, DEC. 2010. [3] F. MLINARSKY, LTE PHYSICAL LAYER FUNDAMENTALS AND TEST REQUIREMENTS, OCTOSCOPE, DECEMBER, PP.3, (2009).

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