基于误码率的中继位置及功率分配联合优化

摘要

The influence of different relay location and power allocation on SER performance was analyzed for cooperative communication system with single AF relay. The optimum relay location of linear network topology was derived for both EPA and OPA method,which was aimed at minimizing SER of system. Analysis and simulation results show that,joint optimization for relay location and OPA scheme significantly outperforms the EPA case.%针对单中继AF协作通信系统,分析了不同中继位置和功率分配方式对系统误码率性能的影响.以最小化系统误码率为目标,研究了等功率分配(equal power allocation,EPA)和最优功率分配(optimum power allocation,OPA)两种方案下,中继按照线形拓扑轨迹运动时的最优位置.理论分析和仿真结果表明,中继位置及OPA的联合优化算法大大提高了传统的EPA方案下的系统性能.