OFDM Simulation and Analysis

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Communications

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Study Guide

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OFDM Simulation and Analysis

OFDM Simulation &

Performance Analysis

2012

EEET1123 Digital Signal Processing Project

RMIT University

Group Member -1

Yingjie Jiang (S3372089)

Group Member -2

Feiyu Pu (S3316550)

Group Number - 5

5/18/2012

Group Member -3

Yuheng Liang (S3351151)

Group Member -4

Yunpeng Zhang (S3360808)

Coordinator

Dr. S. Kandeepan

RMIT UNIVERSITY

Index

Abstract........................................................................................................................................ i

1. Introduction ............................................................................................................................. 1

2. Problem statement .................................................................................................................. 2

3. Key Objectives ......................................................................................................................... 2

4. Revision on OFDM Background theory ......................................................................................

3 4.1 Orthogonality

........................................................................................................................... 3 4.2 OFDM

Modulation and Demodulation .................................................................................... 3 4.3

OFDM Implementation Using IFFT Processing ........................................................................ 4

4.4 Cyclic Prefix Insertion ...............................................................................................................

4 5. OFDM IMPLEMENTATION

......................................................................................................... 5 5.1 Transmitter

............................................................................................................................... 5 5.1.2 OFDM

Transmitter......................................................................................................... 6 5.2 OFDM

Receiver ......................................................................................................................... 8 5.2.1

Series-parallel Conversion ............................................................................................. 9 5.2.2

Periodic Time Guard Removal....................................................................................... 9 5.2.3

Demodulation (FFT) ..................................................................................................... 10 5.2.4

Parallel-series Conversion and de-padding ............................................................... 11 5.2.5

Phase Detection........................................................................................................... 11 6. The

Communication Channel Effects ....................................................................................... 12 6.1

Noise ....................................................................................................................................... 13

6.2 Multipath Fading ....................................................................................................................

13 6.2.1 Rayleigh Model............................................................................................................ 14

6.2.2 Rician's Model: ............................................................................................................ 14 7.

Results & Performance .......................................................................................................... 15

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OFDM Simulation and Analysis OFDM Simulation & Performance Analysis 2012 EEET1123 Digital Signal Processing Project RMIT University Group Member -1 Yingjie Jiang (S3372089) Group Member -2 Feiyu Pu (S3316550) Group Number - 5 5/18/2012 Group Member -3 Yuheng Liang (S3351151) Group Member -4 Yunpeng Zhang (S3360808) Coordinator Dr. S. Kandeepan RMIT UNIVERSITY Index Abstract........................................................................................................................................ i 1. Introduction ............................................................................................................................. 1 2. Problem statement .................................................................................................................. 2 3. Key Objectives ......................................................................................................................... 2 4. Revision on OFDM Background theory ...................................................................................... 3 4.1 Orthogonality ........................................................................................................................... 3 4.2 OFDM Modulation and Demodulation .................................................................................... 3 4.3 OFDM Implementation Using IFFT Processing ........................................................................ 4 4.4 Cyclic Prefix Insertion ..... ...
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