Patent ID: 8224273

Claim:
A demodulator comprising: a plurality of demodulating units for demodulating inputted orthogonal frequency division multiplexing signals and for outputting demodulated signals; channel profile calculating units each provided for the demodulating units, for calculating channel profiles based upon the demodulated signals outputted from corresponding demodulating units; transmission channel decision units for determining, based upon the channel profiles, the amount of transmission channel distortions that each of the demodulated signals has; transmission channel comparing units for outputting transmission channel distortion comparison information indicating relative amounts of the transmission channel distortions with respect to each other; reliability information generating units for outputting reliability information indicating reliability of the demodulated signals outputted from each of the demodulating units, based upon the transmission channel distortion comparison information; a weighting factor calculating unit for outputting, depending on the reliability information, weighting factors used in combining the demodulated signals outputted from each of the demodulating units; and a combining unit for combining, in proportion to the outputs of the weighting factor calculating units, the demodulated signals each outputted from the demodulating units.