Cover

Contents

Authors Biography

List of Abbreviations

1 Introduction

2 General Overview of Relay Techniques

2.1 Relay Based Communications

2.1.1 Relaying techniques

2.2 Amplify and Forward Relay Technique

2.2.1 AF with Fixed Gain

2.2.2 AF with Variable Gain

2.3 Decode and Forward Relay Technique

2.4 Performance of AF and DF Relay Systems

3 OFDM relay systems

3.1 Basic OFDM Principles

3.1.1 OFDM System Structure

3.1.2 Bene.ts and Shortcomings of OFDM

3.1.3 Implementation of OFDM and Perspectives

3.2 Overview OF OFDM Relay Systems

3.3 OFDM Relay Systems with Subcarrier Permutation

3.3.1 Capacity Enhancement in OFDM Relay Systems

3.3.2 BER Performance Improvement in OFDM Relay Systems

4 Relay Stations in Wireless Cellular Networks

4.1 OFDM Relay Systems in WWAN

4.2 Relay Speci.cations in IEEE 802.16J Standard

4.3 Relay Solutions in IMT-Advanced Relay Systems

4.3.1 Relay Speci.cations in LTE-Advanced Systems

4.3.2 Relay Speci.cations in IEEE 802.16m Standard

4.3.3 Comparisons of IMT-Advanced Relay Systems

5 Performance of OFDM AF FG Relay Systems with Subcarrier Permutation

5.1 System Description

5.2 Statistics of the End-To-End SNR

5.2.1 Ordered Statistics of Random Variables

5.2.2 PDF of SNR for BTW SCP Scheme

5.2.3 PDF of SNR for BTB SCP Scheme

5.2.4 MGF of SNR for BTB SCP Scheme

5.2.5 MGF of SNR for BTB SCP Scheme

5.3 BER Performance of OFDM AF FG Relay Systems with SCP

5.3.1 BER of DPSK Modulated OFDM AF FG Relay Systems with SCP

5.3.2 BER of BPSK Modulated OFDM AF FG Relay Systems with SCP

5.3.3 BER of m-QAM Modulated OFDM AF FG Relay Systems with SCP

5.4 Ergodic Capacity of OFDM AF FG Relay Systems with SCP

5.5 Performance Analysis of OFDM AF FG Relay Systems with SCP

5.5.1 BER Performance Analysis of DPSK Modulated OFDM AF FG Relay Systems with SCP

5.5.2 BER Performance Analysis of BPSK Modulated OFDM AF FG Relay Systems with SCP

5.5.3 BER Performance Analysis of 4-QAM Modulated OFDM AF FG Relay Systems with SCP

5.5.4 Ergodic Capacity Analysis of OFDM AF FG Relay Systems with SCP

6 Performance of OFDM AF VG Relay Systems with Subcarrier Permutation

6.1 System Description

6.2 Statiscs of the End-to-End SNR

6.2.1 Harmonic Mean of Random Variables

6.2.2 PDF of SNR for BTW SCP Scheme

6.2.3 PDF of SNR for BTB SCP Scheme

6.2.4 MGF of SNR for BTW SCP Scheme

6.2.5 MGF of SNR for BTB SCP Scheme

6.3 BER Performance of OFDM AF VG Relay Systems with SCP

6.3.1 BER Performance of DPSK Modulated OFDM AF VG Relay Systems with SCP

6.3.2 BER Performance of BPSK Modulated OFDM AF VG Relay Systems with SCP

6.4 Ergodic Capacity of OFDM AF VG Relay Systems with SCP

6.5 Performance Analysis of OFDM AF VG Relay Systems With SCP

6.5.1 BER Performance Analysis of DPSK Modulated OFDM AF VG Relay Systems with SCP

6.5.2 BER Performance Analysis of BPSK Modulated OFDM AF VG Relay Systems with SCP

6.5.3 Ergodic Capacity Analysis of OFDM AF VG Relay Systems with SCP

6.6 Performance Comparison of OFDM AF Relay Systems with SCP

6.6.1 Comparison of BER Performances

6.6.2 Comparison of Ergodic Capacities

7 Performance of OFDM DF Relay Systems with Subcarrier Permutation

7.1 System Description

7.2 BER Performance of DPSK Modulated OFDM DF Relay Systems with SCP

7.3 BER Performance of BPSK Modulated OFDM DF Relay Systems with SCP

7.4 Ergodic Capacity of OFDM DF Relay Systems with SCP

7.5 Performance Analysis of OFDM DF Relay Systems with SCP

7.5.1 BER Performance Analysis of DPSK Modulated OFDM DF Relay Systems with SCP

7.5.2 BER Performance Analysis of BPSK Modulated OFDM DF Relay Systems with SCP

7.5.3 Ergodic Capacity Analysis of OFDM DF Relay System with SCP

7.6 Comparative Performance Analysis of OFDM AF and OFDM DF Relay Systems with SCP

7.6.1 Comparative BER Performance Analysis of OFDM AF and OFDM DF Relay Systems with SCP

7.6.2 Comparative Analysis of Ergodic Capacities of OFDM AF and OFDM DF Relay Systems with SCP

References

Index

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