基于混合合并的协作混合自动重传方案  

A Study on the Cooperative HARQ Scheme Based on the Hybrid Combining

作　　者：吴熹 WU Xi(School of Communication Engineering of Sichuan Post and Telecommunication College,Chengdu Sichuan 610067,P.R.China)

机构地区：[1]四川邮电职业技术学院通信工程学院,四川成都610067

出　　处：《重庆电力高等专科学校学报》2022年第3期26-30,共5页Journal of Chongqing Electric Power College

摘　　要：为了进一步提高协作通信系统的可靠性,提出了一种协作混合自动重传(hybrid automatic repeat request,HARQ)方案。在协作阶段,目的终端对来自中继链路和信源链路的重传信息分别采用Chase合并和递增冗余(incremental redundancy,IR)合并进行处理。在瑞利衰落信道下,推导了等效信道的概率分布,给出了系统的可达容量上界及中断概率下界表达式。仿真结果表明,所提方案进一步降低了中断概率,同时提高了系统的吞吐量。In order to further improve the reliability of the cooperative communication system,this paper proposes a cooperative hybrid automatic repeat request(HARQ)scheme.In the cooperation phase,the destination terminal uses Chase combining and incremental redundancy(IR)combining to process the re-transmission information from the relay link and the source link respectively.Under the Rayleigh fading channel,the probability distribution of the equivalent channel is derived,and the upper bound of the system’s reachable capacity and the lower bound of the outrage probability are given.The simulation results show that the proposed scheme further reduces the outrage probability.Meanwhile,it also improves the throughput.

关 键 词：混合自动重传 协作通信 递增冗余合并 Chase合并 

分 类 号：TN929.5[电子电信—通信与信息系统]