不同传输模式下双向中继通信系统速率分析

Rate Analysis of Two-way Relay Communication System in Different Transmission Modes

在无线协作通信系统中,2个节点借助1个中继实现信息互换,分析了2时隙、3时隙和4时隙中继传输模式的系统和速率性能。仿真结果表明,在公平的发送总功率和信息交换的前提下,2时隙和3时隙传输和速率在任何信噪比情况下均优于4时隙传输,且其和速率随着信道估计误差的增加而显著下降。

In wireless cooperative communication systems,two nodes help exchange the information via one relay,and the performance of system sum rates of two time slot,three time slot and four time slot transmission modes is analyzed.Simulation results show that,on the premise of fair transmit sum power and information exchange,the sum rates of two and three time slot transmissions are superior to that of four time slot transmission at any signal-to-noise ratio values,and the sum rates of two and three time slot transmissions dramatically decrease with the increase of channel estimation error.