| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration of transmission efficiency by reducing the time required for converging a tap coefficient in adaptive reception. SOLUTION: An array synthesizing part 102 array-synthesizes reception signals received from a plurality of antennas, a most likelihood group estimating part 106 outputs a symbol group candidate by executing an equalizing processing by using a Viterbi algorithm with respect to the reception signal after array synthesis, a replica generating part 110 generates a replica signal from an existing signal or the symbol group candidate, a first tap coefficient estimating part 104 estimates and updates the tap coefficient to be used for array synthesis with a difference between the reception signal after array synthesis and the replica signal as likelihood information, and the second tap coefficient estimating part 107 estimates and updates the tap coefficient to be used for generating the replica signal with the difference between the reception signal after array synthesis and the replica signal as likelihood information.
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