协同通信系统中混合转发模式设计与仿真

Hybrid-and-forward mode design and simulation of cooperative communication system

针对无线局域网的系统容量与抗多径衰落等问题,提出在协同通信系统中,采用放大转发模式与解码转发模式混合进行转发的设计方案,同时给出混合转发模式下终端接收机的设计方案、功率分配方案及系统模型。并且通过仿真对放大转发模式、解码转发模式、混合转发模式在不同编码方式下与直接发送模式的性能比较。仿真结果表明,混合转发模式提高了频率选择性衰落信道中的误码性能,具有更良好系统容量与抗多径能力。

To solve the problem of system capacity and anti-multipath-fading in wireless local area networks,the design with amplify-and-forward and decode-and-forward mode in cooperative communication system were proposed,and the system modes,power allocations and receivers of mixed forwarding were provided.And simulations on amplify-and-forward,decode-and-forward mode,and hybrid-and-forward mode in different coding modes were made and direct transmission mode performance was compared.The simulation results show that the BER performance of frequency selective fading channel was improved,with a better system capacity and anti-multipath-fading performance.