This paper considers channel estimation and achievable rates for the uplinkof a massive multiple-input multiple-output (MIMO) system where the basestation is equipped with one-bit analog-to-digital converters (ADCs). Byrewriting the nonlinear one-bit quantization using a linear expression, wefirst derive a simple and insightful expression for the linear minimummean-square-error (LMMSE) channel estimator. Then employing this channelestimator, we derive a closed-form expression for the lower bound of theachievable rate for the maximum ratio combiner (MRC) receiver. Numericalresults are presented to verify our analysis and show that our proposed LMMSEchannel estimator outperforms the near maximum likelihood (nML) estimatorproposed previously.
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