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 -- RIVER PUBLISHERS SERIES IN COMMUNICATIONS.