毫米波大规模MIMO系统基于等效信道的全连接混合预编码设计

doi:10.11959/j.issn.1000-0801.2021017

Abstract

Abstract:

In order to improve the performance of hybrid precoding scheme based on fully connected structure in millimeter-wave massive MIMO system, a hybrid precoding scheme based on an equivalent channel with two-step design method was proposed.Firstly, the equivalent channel was constructed by combining the analog precoding matrix at the transmitter, the analog combining matrix and the channel matrix at the receiver, and the analog part of the transceiver was designed to maximize the equivalent channel gain.Furthermore, the least squares criterion was applied to derive the digital precoding matrix and the digital combination matrix column by column to design the digital part of the transceiver.Simulation results show that the proposed algorithm can approximate the optimal digital precoding scheme and has lower complexity and stronger fault tolerance.

Key words: massive MIMO, equivalent channel gain, least squares criterion, fault tolerance

CLC Number:

TN929.5

Haiyan CAO, Zhiyao MA, Yingjuan ZHI, Renqing LIU, Fangmin XU, Xin FANG. Design of full-connected hybrid precoding based on an equivalent channel in millimeter-wave massive MIMO system[J]. Telecommunications Science, 2021, 37(1): 85-93.

Figures/Tables 10

算法	复杂度
本文所提算法	$O (N_{t}^{2} N_{RF} + N_{RF}^{3} + N_{RF}^{2} N_{t} + N_{RF} N_{t} N_{s} ）$
OMP算法	$O (N_{t}^{2} N_{RF} + N_{t}^{2} N_{RF}^{} N_{s} + N_{t}^{2} N_{RF}^{} + N_{t} N_{RF}^{})$
基于信道SVD算法	$O (N_{t}^{2} N_{RF} + N_{RF}^{3} + N_{RF}^{2} N_{t} + N_{RF} N_{t} N_{s} ）$

References 15

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