Minimum mean-squared error block-decision feedback sequence estimation in digital communication systems
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United States of America Patent
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Jun 29, 2004
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Jul 24, 2000
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Jul 24, 2000
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Abstract
A method of estimating the sequence of transmitted symbols in a digital communication system is provided. By assuming that the transmitted symbols have a zero mean and a covariance matrix given by an identity matrix, as is the case in an EDGE communication system, the solution to the minimization of the expectation value of .parallel.s-s.parallel..sup.2 always allows a lower triangular matrix to be found through Cholesky decomposition. The lower triangular matrix allows an efficient block decision-feedback sequence estimation to be carried out. The method is no more complex than the zero-forcing block decision-feedback sequence estimation technique, yet a solution always exists and performance is improved over the zero-forcing method.
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