Parameter Estimation for Correlated MIMO Channels with Frequency-Selective Fading

ArticleinWireless Personal Communications 52(4):813-828 · March 2010with10 Reads
Impact Factor: 0.65 · DOI: 10.1007/s11277-009-9664-9

    Abstract

    In this paper, we address the problem of frequency offset and channel gain estimation for frequency-selective multi-input
    multi-output (MIMO) correlated fading channels. A maximum-likelihood (ML) frequency offset (FO) estimator is proposed by using
    the Bayesian approach. We show that the proposed FO estimator is efficient and asymptotically optimal. Based on the FO estimate,
    we derive the linear minimum mean square error (LMMSE) channel estimator and analytically investigate the effect of frequency
    offset estimation error on the mean square error (MSE) performance of the channel estimator. Finally, the performances of
    the FO and channel estimation are evaluated by simulation results.