多中继下代码合并的协作ARQ性能分析  

Performance Analysis of Cooperative ARQ with Code Combination over AF Relay

作　　者：胥桓[1] 范雪林[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2013年第8期37-40,共4页Communications Technology

摘　　要：在协同通信中,通过将处于一个区域内部彼此邻近的多个节点联合起来,形成一个虚拟的MIMO阵列,就有能够获得传统MIMO的传输效果。若在接收端对接收到的多个信号样本进行合并,可以进一步增大系统容量提高传输的可靠性(降低误码率)。重点分析了在多个中继条件下协作ARQ采用等增益码合并技术对协作ARQ性能的影响。文中的相关分析表明在接收端执行码合并,可以有效改善系统性能,随着参与中继数的增加误帧率逐步降低。In Cooperative Communication,through combining the multiple adjacent nodes in an area to form a virtual MIMO array,the traditional MIMO transmission results could be achieved.If the multiple signals are combined at the receiving end,the system capacity could be further increased and the transmission reliability（lower error rate） be effectively improved.This paper focuses on the performance of cooperative automatic repeat request（CARQ） in adoption of coherent equal gain code combination at the destination over multi-relay conditions.The analysis indicates that the use of code combination at destination could effectively improve the frame-error-probability（FER）,and with the increase of relay number,the FER is reduced.

关 键 词：协作ARQ 协作分集 码合并 

分 类 号：TN929.5[电子电信—通信与信息系统]