JOINT ITERATIVE DECODING FOR SIMPLE-ENCODING SYSTEMATIC IRREGULAR-LDPC-BASED CODED COOPERATION IN NON-IDEAL RELAY CHANNEL

作     者：Chen Jingwen Yang Fengfan Luo Lin Tho Le-Ngoc 

作者机构：College of Information Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China College of Information Science and Engineering Southeast University Nanjing 210096 China Department of Electrical and Computer Engineering McGill University Montreal H3A2A7 Quebec Canada 

出 版 物：《Journal of Electronics(China)》 (电子科学学刊（英文版）)

年 卷 期：2010年第27卷第3期

页      面：305-315页

学科分类：11[军事学] 0810[工学-信息与通信工程] 1105[军事学-军队指挥学] 08[工学] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 110503[军事学-军事通信学] 

基　　金：Supported by the Open Research Fund of National Moblie Communications Research Laboratory of Southeast Uni-versity (No. W200704) 

主　　题：Cooperative communication Low-density parity-check code Relay channel Joint Tanner graph Joint iterative decoding 

摘      要：In this paper, a new kind of simple-encoding irregular systematic LDPC codes suitable for one-relay coded cooperation is designed, where the proposed joint iterative decoding is effectively performed in the destination which is in accordance with the corresponding joint Tanner graph characterizing two different component LDPC codes used by the source and relay in ideal and non-ideal relay cooperations. The theoretical analysis and simulations show that the coded cooperation scheme obviously outperforms the coded non-cooperation one under the same code rate and decoding complex. The significant performance improvement can be virtually credited to the additional mutual exchange of the extrinsic information resulted by the LDPC code employed by the source and its counterpart used by the relay in both ideal and non-ideal cooperations.