相关Nakagami-MIMO信道二维秩匹配模型

Modeling correlated nakagami-MIMO channel based on 2D rank matching

针对现有Nakagami-MIMO信道仿真方法非常复杂的问题,提出了一种基于二维秩匹配的Nakaga-mi-MIMO空时相关衰落仿真模型。该模型首先利用高效舍弃法产生多支路独立Nakagami随机过程,然后基于二维秩匹配技术引入各子信道空时相关性且保持子信道原有统计特性不变。仿真结果表明,该模型输出各子信道的衰落包络分布和空时相关系数等统计特性均与理论结果吻合,可应用于任意衰落参数和空时相关特性的Nakagami-MIMO信道仿真场合。

The traditional Nakagami-MIMO（multiple-input ~ multiple-output） channel simulation methods are very complex,and a novel simulator for spatial and temporal correlated Nakagami-MIMO fading chan- nel based on 2D rank matching technique was proposed. Firstly, a high efficient rejection method was used to generate several Nakagami random processes as sub-branches of the MIMO channel. Then, the spatial and temporal correlation between each sub-channels were introduced by a new two-dimensional rank matc- hing technique, which keeps the statistical properties of Nakagami fading unchanged. Simulation results show that the new simulator agrees well with the theoretical results on envelope distribution and spatial- temporal correlation, which can be applied to simulating the Nakagami-MIMO channel with arbitrary fa- ding parameters and correlation features.