基于索引调制的全双工OFDM中继通信

Full-duplex OFDM relay communication based on index modulation

将正交频分复用与索引调制相结合,提出了一个全双工正交频分复用索引调制中继通信系统。采用最大似然检测方法估计了接收到的正交频分复用数据块,推导出通信故障中断概率、误块率和端到端容量的表达式,通过蒙特卡罗法进行数值仿真。结果表明:全双工正交频分复用索引调制中继的协作通信系统,在中断概率和误块率方面具有很好的性能指标;端到端容量受中继节点转发信号的自干扰残差功率影响较大,适用于对通信可靠性要求更高的场合。

This paper proposes a full duplex OFDM index modulation relay communication system based on the combination of orthogonal frequency division multiplexing and index modulation.The research process consists of using the maximum likelihood detection to estimate the received OFDM block in the relay node of the system;thereby deriving the expressions of aver-age outage probability,block error rate and end-to-end;and ultimately verifying the correctness of the above analysis by monte carlo simulation.The simulation results show that the cooperative communication system based on index modulation and relay of full duplex orthogonal frequency division multiplexing could provide better performance indicators in terms of the interruption probability and block error rate and shows the end-to-end capacity subjected to a greater influence of the self-interference residual power of the relay node-transmitted signal,making it more suitable for the applications where a higher communication reliability is required.