瑞利衰落信道中增量中继协作分集网性能研究  

Performance study of incremental relaying cooperative diversity networks in Rayleigh fading channels

作　　者：李小花[1] 刘云[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500

出　　处：《华中师范大学学报（自然科学版）》2012年第2期155-158,共4页Journal of Central China Normal University：Natural Sciences

摘　　要：协作分集是利用单天线的辅助节点组成虚拟天线进行通信的一项技术,它通过使用中继节点向信宿转发信源信息获得空间分集.与普通的协作分集相比,它限制中继只处理信道条件差的信号,从而可以节约信道资源.协作分集网可以利用目的终端的反馈信息提高信道利用率,当信宿端提供传错的反馈时,中继才会重传信源信号,并且将信源信号和中继转发的信号整合在一起.在这篇论文中,使用放大中继模式研究在独立的瑞利衰落信道中增量中继协作分集网的性能,并进行了仿真.结果表明:和普通的协作分集网相比,增量中继协作分集网降低了误码率,提高信道利用率.Cooperative diversity is a communicating technology to use a single antenna as the auxiliary node to make up a virtual antenna. Compared with the common cooperative diversity networks, it saves the channel resources by relaying weak signal only. Incremental relay cooperative diversity network can take advantage of the feedback of destination terminal to improve the channel utilization. If the destination terminal to provide an error feedback, the relay will retransmit the signal source and combine the signals that the destination receives from the source and the relay. In this paper, we study the performance of incremental relaying cooperative diversity networks using amplify-and-forward relays over independent Rayleigh fading channels. Simulation was carried out. Resuits show that the incremental relaying cooperative diversity can reduce error rate and improve channel utilization.

关 键 词：协作分集网 放大中继模式 瑞利衰落信道 增量中继 

分 类 号：TN911[电子电信—通信与信息系统]