Abstract
This paper deals with the Maximum Likelihood Estimation of the multichannel impulse response in a mobile communication system whose base stations are equipped with antennas arrays. The following problem is solved: using the training sequence, find the maximum likelihood multichannel impulse response from one mobile to the base station under a reduced rank constraint in the presence of gaussian noise and jammers with unknown covariance matrix. This method finds applications in demodulation (the reduced rank channel estimate can be used in a Viterbi Algorithm), and experimental results using real signals demonstrate its high performance compared with the standard Minimum Mean Square Error (MMSE) multichannel estimate.
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Kassem, H., Forster, P. Demodulation with a Multichannel Estimation Method Using a Reduced Rank Constraint. Analog Integrated Circuits and Signal Processing 34, 155–162 (2003). https://doi.org/10.1023/A:1021941203890
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DOI: https://doi.org/10.1023/A:1021941203890