Low-complexity channel estimation for wideband mmWave massive MIMO systems with uniform planar arrays  

作　　者：Wang Haotian Liu Lizhou Qiu Ling Zhang Lei 

机构地区：[1]School of Electronic and Information Engineering,University of Science and Technology of China,Hefei 230022,China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2025年第1期1-10,共10页中国邮电高校学报(英文版)

基　　金：supported by the National Key Technology R&D Program of China (2022YFB2902302)。

摘　　要：Millimeter-wave(mmWave) and massive multiple-input multiple-output(MIMO) are broadly recognized as key enabling technologies for the fifth generation(5G) communication systems. In this paper, a low-complexity angle-delay parameters estimation(ADPE) algorithm was put forward for wideband mmWave systems with uniform planar arrays(UPAs). In particular, the ADPE algorithm effectively decouples the angle-delay parameters and converts the angle-delay estimation problem into three independent subproblems. Accordingly, the ability to devise an off-grid method based on discrete Fourier transform(DFT) with a closed-form solution for angle-delay estimation and potential path number acquisition can be realized. In actuality, only a limited number of potential paths are close to the true paths influenced by noise. Consequently, the removal of noise paths to acquire the corresponding true path gains through a sparsity adaptive path gains estimation(APGE) algorithm is postulated. Finally, the simulation results substantiate the effectiveness of ADPE and APGE algorithms.

关 键 词：wideband millimeter-wave(mmWave) massive multiple-input multiple-out(MIMO) LOW-COMPLEXITY uniform planar array(UPA) channel estimation 

分 类 号：TN929.5[电子电信—通信与信息系统]