【摘要】 本文研究基于两跳的协作通信系统中的中继选择问题。为了降低中断概率,传统中继选择方案往往需要引入更多的中继节点参与协作传输,导致系统平均吞吐量下降。为解决上述问题,本文提出了一种新的自适应中继选择方案(ARSS),此方案可以结合两跳的链路信道状况,自适应地选择中继节点及其转发协议。仿真结果表明,与其他中继选择方案相比,本文提出的方案有效地降低了系统中断概率,最小化中继节点选择的数目,同时提高了系统平均吞吐量。更多还原

【Abstract】 This paper studies on the issue of relay selection based on the two-hop cooperative transmission system.In order to decrease the outage probability,conventional relay selection schemes require introducing more relay nodes to join in cooperative transmission,which leads to the decrease of system throughput.In order to solve the above issue,a novel adaptive relay selection scheme(ARSS) is proposed in this paper.This scheme adaptively determines the relay selection and their forwarding protocols,based on the channel status of two links.Simulation results show that compared with other relay selection schemes,the outage probability decreases efficiently using our proposed scheme,the number of selected relay nodes is minimized,and the average system throughput is increased.更多还原