一种全速率协作通信系统传输方案

New scheme of full rate cooperative communication transmission

针对协作通信带来链路传输效率降低的问题,在译码转发中继方案的基础上,提出一种新的全速率协作通信传输方案。首先给出全速率协作通信系统的接收信号模型,并利用矩函数方法理论推导给出全速率协作通信系统最大似然接收机的链路成对差错概率及链路分集增益,理论分析表明:全速率协作通信传输方案可获得1符号/时隙的传输效率,且最大似然接收机可获取4重分集增益。计算机仿真结果证明理论分析的正确性。

To solve the problem of low transmission efficiency in cooperative communication,this paper proposes a new scheme of full rate cooperative communication transmission based on decode-and-forward（DF） protocol.Firstly,the receiver signal model of the full rate cooperative communication system is established.Then,the link pair error probability and diversity gain of the maximum likelihood receiver is derived with the moment generating function.Finally,theory analysis shows that the transmission efficiency of the proposed scheme is 1 symbol per time slot,moreover the diversity gian of the maximum likelihood receiver is 4.Simulation results are given to corroborate the theoretical analysis.