关键词: 三维多输入多输出, K复合衰落信道, 上界, 和速率, 迫零接收

Abstract: Concern 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 systems over (Rayleigh/Gamma) fading channel 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 composite fading channels are proposed. The derived results encompass Rayleigh multipath fading, Gamma shadowing fading, Geometric path-loss, the effects of radiation attenuation of 3D antenna and user distribution. The experimental results show that the obtained expressions accurately match with the Monte Carlo simulations.

Key words: three-dimensional multiple-input multiple-output (3D MIMO), K composite fading channels, upper bound, sum rate, zero-forcing(ZF）