%0 Journal Article
%A DING Jian
%A LI Min-zheng
%T Hybrid Precoding Method Based on Geometric Mean Decomposition for Millimeter Wave Massive MIMO
%D 2019
%R 10.13190/j.jbupt.2018-209
%J Journal of Beijing University of Posts and Telecommunications
%P 42-49
%V 42
%N 2
%X In millimeter wave massive multiple input multiple output (MIMO) systems, a hybrid precoding scheme based on geometric mean decomposition (GMD) was presented. In the proposed scheme, the channel was decomposed into multiple equal-gain subchannels by means of GMD to simplify the complexity of encoding and decoding. Based on it, the analytical expression of the objective function of system spectrum efficiencyoptimization was derived. And then the hybrid precoding was designed according to the basic tracking principle and the least square method. Finally, the optimal theoretical value of the system spectrum efficiency was obtained by the proposed algorithm. The numerical simulation results show that the proposed scheme has the advantages on reducing system complexity and improving system spectrum efficiency compared with the design scheme based on orthogonal matching pursuit.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2018-209