Semi-blind Channel Estimation for Multiuser Massive MIMO Systems.

IEEE Transactions on Signal Processing（2018）

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摘要

Motivated by recent developments in time-division duplex massive multiple-input multiple-output (MIMO) systems, this paper investigates semi-blind channel estimation for multiuser MIMO systems. An expectation-maximization (EM) algorithm is derived for semi-blind channel estimation and a tractable EM algorithm is obtained by assuming a Gaussian distribution for the unknown data symbols, which impro...

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关键词

Channel estimation,MIMO,Maximum likelihood estimation,Training,Signal processing algorithms,Downlink

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