基于信道二元性的MIMO系统容量域研究与仿真

Research and Simulation of MIMO Capacity Region based on Channel Duality

MIMO广播信道容量域是当前信息论研究的热点。由于MIMO广播信道容量分析的分析方法与建模计算非常复杂,给该信道容量域的研究带来了困难。针对这一问题,从基本信道的容量域出发,基于广播信道与多址接入信道的二元性,通过MIMO多址接入信道的速率域来计算MIMO广播信道的可达速率域。仿真结果表明,该算法简单有效,计算结果有效逼近MIMO广播信道理论和容量速率,对MIMO广播信道速率域的研究提供了新的研究思路与方法。

Capacity region of MIMO broadcast channel is a hot topic in information theory. However, the analyzing and modeling of MIMO broadcast channel capacity is quite complex and this would bring much trouble to the research of channel capacity region. Aiming at this problem and based on the basic channel capacity result and duality of broadcast channel, the achievable rate region of MIMO broadcast channel is calculated via the rate region of MIMO multiple- access channel. The simulation results indicate that the algorithm is simple and effective in calculating the sum capacity rate, and the computation results can effectively approximate the theoretical sum capacity rate of MIMO broadcast channel. This could provide certain new ideas and novel methods for the research of MIMO broadcast channel rate domain.