一种基于PDA+LDPC迭代检测算法的协作通信策略  

A cooperative communication scheme based on PDA+LDPC iterative detection algorithm

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：《信号处理》2009年第10期1634-1638,共5页Journal of Signal Processing

基　　金：南京邮电大学引进人才科研项目(NY207132)

摘　　要：本论文研究了基于同步DS-CDMA协作通信系统的迭代接收机性能,该系统在协作伙伴节点端和基站端均使用由随机数据联合检测器与LDPC译码器级联(PDA+LDPC,probabilistic data association+low density parity check codes)所组成的迭代接收机,利用从该迭代接收机所提供的信息,提出了一种集中式协作伙伴节点选择策略。根据该策略,由于距离基站较近的节点与基站间通信能力相对较强,每个信源节点将优先选择距离基站近的节点作为其协作伙伴节点,仿真结果表明,本文所提出的集中式协作伙伴节点选择策略可取得较好的系统性能。This paper investigates the performance of the iterative receivers for the synchronous DS-CDMA cooperative communication system, which employs PDA ＋ LDPC iterative detection algorithm at both the cooperative partner node and the base node. Furthermorc, it presents a central-controlled cooperative partner node selection scheme by employing the information provided by the iterative receivers. With the presented scheme, every source node takes the priority to select the node which is nearer from the base node as its cooperative node for its better communication ability with the base node. Simulation results demonstrate that the proposed scheme can achieve some better performance.

关 键 词：迭代多用户检测算法 协作通信 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]