Turbo Coding for Satellite and Wireless Communications

5 137 7 Performance of BTCs and 139 their Applications 7. 1 Introduction 139 7. 2 Some Results from the Literatures 139 7. 3 Applications of Block Turbo Codes. 142 7. 3. 1 Broadband Wireless Access Standard 144 7. 3. 2 Advanced Hardware Architectures (AHA) 145 7. 3. 3 COMTECH EF DATA 147 7. 3. 4 Turbo Concept 149 7. 3. 5 Paradise Data Com 150 Summary 7. 4 151 8 Implementation Issues 153 8. 1 Fixed-point Implementation of Turbo Decoder 153 8. 1. 1 Input Data Quantization for DVB-RCS Turbo Codes 155 8. 1. 2 Input Data Quantization for BTC 157 8. 2 The Effect of Correction Term in Max-Log-MAP Algorithm 159 8. 3 Effect of Channel Impairment on Turbo Codes 163 8. 3. 1 System Model for the Investigation of Channel Impairments 163 8. 3. 2 Channel SNR Mismatch 164 8. 3. 2. 1 Simulation Results 165 8. 3. 3 Carrier Phase Recovery 170 8. 3. 3. 1 The Effect of Phase Offset on the Performance of RM Turbo Codes 170 8. 3. 3. 2 The Effect of Preamble Size on the Performance of RM Turbo Codes 170 8. 3. 3. 3 Simulation Results 170 8. 4 Hardware Implementation of Turbo Codes 171 8. 5 Summary 175 9 177 Low Density Parity Check Codes 9. 1 Gallager Codes: Regular Binary LDPC Codes 177 9. 2 Random Block Codes 178 9. 2. 1 Generator Matrix 179 9. 2.

Klappentext

pThis book provides an excellent mix of theory and practice. Starting with information theory and classical coding theory, the text covers the message passing concept that forms the basis of modern coding techniques, including turbo codes and Low Density Parity Check (LDPC) codes, and then discusses a large number of turbo code combinations - including industry standards such as DVB-RCS, 3GPP, and CDMA2000. Numerous implementation issues and examples of commercially available turbo codes and products are explored in detail. /ppThis comprehensive treatment of the topic will enable the reader to select, evaluate, and implement the turbo code suitable for their application./p

Inhalt
Turbo Decoding Principles.- Non-Binary Turbo Codes: DVB/RCS Standard.- Spectrally Efficient Non-Binary Turbo Codes: Beyond DVB/RCS.- Block Turbo Codes.- Reed-Muller Codes and Reed-Muller Turbo Codes.- Performance of BTCs and their Applications.- Implementation Issues.- Low Density Parity Check Codes.