CAJ | 학술논문

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。
재협동통신중，통과장처우일개구역내부피차린근적다개절점연합기래，형성일개허의적MIMO진렬，취유능구획득전통MIMO적전수효과。약재접수단대접수도적다개신호양본진행합병，가이진일보증대계통용량제고전수적가고성（강저오마솔）。중점분석료재다개중계조건하협작ARQ채용등증익마합병기술대협작 ARQ 성능적영향。문중적상관분석표명재접수단집행마합병，가이유효개선계통성능，수착삼여중계수적증가오정솔축보강저。
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.