| 摘要 |
A receiving apparatus includes: a transmission-channel estimating unit that estimates a transmission-channel response matrix; a hard-decision sequence estimating unit that estimates a hard decision sequence and outputs the hard decision sequence and likelihood information alpha corresponding to the hard decision sequence; and a soft-decision value creating unit that creates likelihood information beta corresponding to a sequence that a specific bit in the hard decision sequence is inversed by using the received signal vector, a transmission-channel response matrix reconstructed by reducing the dimension of the transmission-channel response matrix, and the hard decision sequence, and that creates a soft decision value of the hard decision sequence based on the likelihood information beta and the likelihood information alpha.
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