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- W4320087214 abstract "In this paper, we investigate the beam domain statistical channel state information (CSI) estimation for the two dimensional (2D) beam based statistical channel model (BSCM) in massive MIMO systems.The problem is to estimate the beam domain channel power matrices (BDCPMs) based on multiple receive pilot signals. A receive model shows the relation between the statistical property of the receive pilot signals and the BDCPMs is derived from the 2D-BSCM. On the basis of the receive model,we formulate an optimization problem with the Kullback-Leibler (KL) divergence. By solving the optimization problem, a novel method to estimate the statistical CSI without involving instantaneous CSI is proposed. The proposed method has much lower complexity than the MMV focal underdetermined system solver (M-FOCUSS) algorithm. We further reduce the complexity of the proposed method by utilizing the circulant structures of particular matrices in the algorithm. We also showed the generality of the proposed method by introducing another application. Simulations results show that the proposed method works well and bring significant performance gain when used in channel estimation." @default.
- W4320087214 created "2023-02-12" @default.
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- W4320087214 date "2022-07-11" @default.
- W4320087214 modified "2023-10-16" @default.
- W4320087214 title "2D Beam Domain Statistical CSI Estimation for Massive MIMO Uplink" @default.
- W4320087214 doi "https://doi.org/10.48550/arxiv.2207.04695" @default.
- W4320087214 hasPublicationYear "2022" @default.
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