采用分布式编码的协作HARQ协议  

Collaborative hybrid-ARQ protocol with distributed code

作　　者：吴熹[1,2] 龙华[1] 唐嘉麒[3] 彭永杰[2] 

机构地区：[1]昆明理工大学通信工程系,昆明650051 [2]宜宾职业技术学院电子信息工程系,四川宜宾644000 [3]广东省电信规划设计院有限公司移动通信咨询设计院云南移动支撑中心,昆明650299

出　　处：《计算机工程与应用》2015年第18期109-113,共5页Computer Engineering and Applications

基　　金：云南省科技计划项目(No.2009CA027);云南省自然科学基金(No.2009ZC016X);宜宾职业技术学院科研项目(No.ybzysc13-20;No.ybzysc13-25)

摘　　要：为提高协作通信系统的可靠性,将分布式编码和码合并技术相结合,提出了一种新的混合自动重传协议,构造了基于分布式Turbo码的协作重传系统模型。目的终端分别采用递增冗余和Chase合并技术处理中继节点和信源的重发信息,并进行联合软判决译码。分析了系统的中断概率和平均吞吐量。仿真结果表明,在平坦瑞利衰落信道下,该分布式编码协作HARQ协议较非协作HARQ协议可获得较大的性能改善。In order to improve the reliability of the cooperative communication system, a new HARQ protocol is proposed by combining the distributed code with the averaged diversity combining technology. The collaborative hybrid repeat request system is constructed by distributed Turbo code. In the destination terminal, the retransmission of relay is processed by incremental redundancy technology, and the Chase combining technology is used to process the source information. Joint soft decision decoding is adopted at the destination terminal. The outage probability and average throughput are deduced. Compared with non-collaborative HARQ protocols, the collaborative HARQ protocol with distributed code can achieve better performance on flat Rayleigh fading channel.

关 键 词：混合自动请求重传 协作通信 TURBO码 中断概率 平均吞吐量 

分 类 号：TN929.5[电子电信—通信与信息系统]