基于PDA+LDPC迭代接收机的分布式协作通信策略  

Distributed cooperative communication scheme based on the PDA+LDPC iterative receivers

作　　者：梅中辉[1] 李晓飞[1] 吴乐南[2] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]东南大学信息科学与工程学院,江苏南京210096

出　　处：《电路与系统学报》2009年第5期76-81,共6页Journal of Circuits and Systems

基　　金：国家自然科学基金项目(60772061);南京邮电大学引进人才科研项目(NY207132)

摘　　要：针对同步DS-CDMA协作通信系统,本文考虑在转发节点端和基站端使用随机数据联合检测算法(probabilistic data association algorithm,PDA)与LDPC码译码器级联的迭代接收机PDA+LDPC,基于该迭代接收机结构,给出了一种分布式协作通信策略,研究表明,该策略较集中式协作伙伴选择策略和传统的DAF协作通信策略可取得更好的系统性能。Considered with the synchronous DS-CDMA cooperative communication system, this paper employs the PDA＋LDPC iterative receivers which is composed by the PDA detector connected with the LDPC decoder at both of the relay nodes and the base node. Based on the proposed iterative receiver structure, a distributed cooperative communication scheme is developed, and the research results demonstrate that this scheme can achieve some performance gains over the both of the central partner node selection scheme and the conventional DAF cooperative communication means.

关 键 词：协作通信 低密度奇偶校验码(LDPC) 多用户检测算法 随机数据联合检测算法(PDA) 

分 类 号：TN914[电子电信—通信与信息系统]