【摘要】 提出了一种在放大转发协作系统中,利用信道统计特性,根据所有潜在中继节点的等效信道增益最小化系统误码率的中继选择算法。该算法将各中继节点的等效信道增益按降序排列,根据不同的信噪比范围选择不同的中继节点个数,即不同的中继集合,使得系统的误码率最小。仿真结果表明,该算法的误码率性能优于ASF算法和AAF算法。更多还原

【Abstract】 A relay selection method is proposed in an amplify-and-forward cooperative system based on a statistic channel information,according to the equivalent channel gain of all potential relay nodes to minimize the symbol error rate.In this method,all relay nodes have a descending order depending on the equivalent channel gain.The algorithm implies that different relay nodes(sets of relay nodes) should be selected to minimize the symbol error rate under different SNR ranges.Simulation results show that the symbol error rate performance of the algorithm is lower than both the ASF and the AAF.更多还原