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arXiv 2512.04470cs.ITeess.SPmath.IT
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联合低秩与稀疏贝叶斯信道估计用于超大规模MIMO通信

Joint Low-Rank and Sparse Bayesian Channel Estimation for Ultra-Massive MIMO Communications

Purple Mountain Laboratories(紫金山实验室)

Jianghan Ji, Cheng-Xiang Wang, Shuaifei Chen, Chen Huang, Xiping Wu, Emil Björnson

AI总结:

本文提出了一种联合低秩与稀疏贝叶斯估计算法,用于超大规模MIMO通信中的信道估计,提升了估计精度和复杂度性能。

摘要:

本文研究了超大规模多输入多输出(MIMO)通信中的信道估计问题。我们提出了一种联合低秩和稀疏贝叶斯估计(LRSBE)算法,用于空间非稳态超大规模信道,通过利用波束域中的低秩性和稀疏性。具体而言,信道估计在期望最大化框架内结合了稀疏贝叶斯学习和软阈值梯度下降。仿真结果表明,所提出算法在不同信噪比条件下,相较于现有最先进方法,在估计精度和总体复杂度方面均有显著优势。

英文摘要:

This letter investigates channel estimation for ultra-massive multiple-input multiple-output (MIMO) communications. We propose a joint low-rank and sparse Bayesian estimation (LRSBE) algorithm for spatial non-stationary ultra-massive channels by exploiting the low-rankness and sparsity in the beam domain. Specifically, the channel estimation integrates sparse Bayesian learning and soft-threshold gradient descent within the expectation-maximization framework. Simulation results show that the proposed algorithm significantly outperforms the state-of-the-art alternatives under different signal-to-noise ratio conditions in terms of estimation accuracy and overall complexity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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