K复合衰落信道下3D分布式MIMO和速率上界

摘要

Concerning the problems that Two-Dimensional Multiple-Input Multiple-Output (2D MIMO) systems only consider the effects of horizontal radiation pattern,ignoring the effects of vertical radiation pattern,and the closed-form on the sum rate of 2D MIMO system over K (Rayleigh/Gamma) fading channels involves special functions,two closed-form upper bounds on achievable sum rate of Three Dimensional Distributed Multiple-Input Multiple-Output (3D D-MIMO) systems with Zero-Forcing (ZF) receivers over K composite fading channels were proposed.The upper bounds considered Rayleigh muhipath fading,Gamma shadow fading,geometric path-loss,3D antenna radiation loss,and user distribution.The experimental results show that the obtained expressions accurately match with the Monte Carlo simulation conclusions.%针对二维多输入多输出(2D MIMO)系统只考虑天线水平辐射增益的影响而忽略垂直辐射增益,以及K复合衰落信道下和速率的确切闭式表达式涉及复杂函数,提出两种在K(Rayleigh/Gamma)复合衰落信道下3D分布式MIMO (3D-MIMO)系统基于迫零(ZF)检测的可达和速率上界.该上界同时考虑瑞利(Rayleigh)多径衰落、伽马(Gamma)阴影衰落、基于几何的路径损耗,3D天线辐射损耗以及用户分布.实验结果表明:所得闭式表达式与蒙特卡洛仿真结论充分相一致.