时分半双工MIMO中继系统性能分析

Performance Analysis of Time-division Half-duplex MIMO Relay System

分析并推导在解码-转发中继方式下时分半双工MIMO中继信道的容量公式,在2种不同的中继选择算法下,应用蒙特卡罗仿真比较MIMO中继系统与一般蜂窝系统的性能。仿真结果表明,在使用适当的中继选择算法后,与一般蜂窝系统相比,时分半双工MIMO中继系统在容量、覆盖范围等方面均有更好的性能,且中继用户的能量消耗较低。

This paper derives the capacity formula of time division hall-duplex MIMO decoder-forward relay channel, and compares the performance between time-division half-duplex MIMO relay system and general cellular system by using Monte-Carlo simulation. Simulation results show that, due to the use of an appropriate relay selection algorithm, time-division half-duplex MIMO relay system is better than general cellular system in capacity, coverage. It is prominent that relay user need not use a high transmit power to obtain capacity gain.