V-BLAST BASED LDPC-CODED RELAY COOPERATION

作     者：唐蕾 仰枫帆 张顺外 范立行 Tang Lei;Yang Fengfan;Zhang Shunwai;Fan Lixing

作者机构：College of Electronics and Information EngineeringNanjing University of Aeronautics and Astronautics 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2013年第30卷第4期

页      面：374-382页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：Supported by the Science and Technology on Avionics Integration Laboratory and National Aeronautical Science Foundation of China(20105552) 

主　　题：航空 空气动力学 类型 直升飞机 

摘      要：An efficient LDPC-coded multi-relay cooperation architecture is proposed based on virtual vertical Bell Labs layered space-time(V-BLAST)processing for uplink communication,where minimum-mean-square-error(MMSE)and BP-based joint iterative decoding based on the introduced multi-layer Tanner graph are effectively designed to detect and decode the corrupted received sequence at the destination.By introducing V-BLAST transmission to the coded multi-relay cooperation,relays send their streams of symbols simultaneously,which increases the data rate and significantly reduces the transmission delay.The theoretical analysis and numerical results show that the new LDPC coded cooperation scheme outperforms the coded non-cooperation under the same code rate,and it also achieves a good trade-off among the performance,signal delay,and the encoding complexity associated with the number of relays.The performance gain can be credited to the proposed V-BLAST processing architecture and BP-based joint iterative decoding by the introduced multi-layer Tanner graph at a receiver-side.