Fast Fading Channel Estimation for UMTS Long Term Evolution
نویسنده
چکیده
In this paper, we present an Approximate Linear Minimum Mean Square Error (ALMMSE) fast fading channel estimator for Orthogonal Frequency Division Multiplexing (OFDM). The ALMMSE channel estimator utilizes the knowledge of the structure of the autocorrelation matrix given by the Kronecker product between the time correlation matrix and the frequency correlation matrix. Simulation results show that the proposed ALMMSE channel estimator allows to move with about 25 km/h higher velocity than the Least Squares (LS) channel estimator in realistic scenarios.
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