Beam Domain Channel Estimation for Spatial Non-Stationary Massive MIMO Systems

In massive multiple-input multiple-output (MIMO) systems, the channel estimation scheme is subject to the spatial non-stationarity and inevitably power leakage in the beam domain. In this paper, a beam domain channel estimation scheme is investigated for spatial non-stationary (SNS) massive MIMO sys...

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Bibliographic Details
Published inIEEE Wireless Communications and Networking Conference : [proceedings] : WCNC pp. 1 - 6
Main Authors Hou, Lin, Chang, Hengtai, Wang, Cheng-Xiang, Huang, Jie, Yang, Songjiang
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.04.2024
Subjects
Accuracy
BDS-SAMP
beam domain channel estimation
Channel estimation
Channel models
Complexity theory
Massive MIMO
Matching pursuit algorithms
power leakage
Simulation
spatial non-stationary
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Summary:In massive multiple-input multiple-output (MIMO) systems, the channel estimation scheme is subject to the spatial non-stationarity and inevitably power leakage in the beam domain. In this paper, a beam domain channel estimation scheme is investigated for spatial non-stationary (SNS) massive MIMO systems considering power leakage. Specifically, a realistic mas-sive MIMO beam domain channel model (BDCM) is introduced to capture the spatial non-stationarity considering power leakage by introducing the illustration of visibility region (VR). Then, a beam domain structure-based sparsity adaptive matching pursuit (BDS-SAMP) scheme is proposed based on the cross-block sparse structure and power ratio threshold of beam domain channel. Finally, the simulation results validate the accuracy of proposed BDS-SAMP scheme with low pilot overhead and reasonable complexity by comparing with conventional schemes.
ISSN:1558-2612
DOI:10.1109/WCNC57260.2024.10571029