DEMODULATION DEVICE, DIVERSITY RECEPTION DEVICE, AND DEMODULATION METHOD

摘要

A demodulation device includes: a plurality of demodulation means for demodulating an input OFDM signal and outputting the demodulated signal; noise component calculation means provided for each of the demodulation means so as to calculate a noise component contained in the demodulated signal outputted from the corresponding demodulation means; delay profile calculation means provided for each of the demodulation means so as to calculate a delay profile according to the demodulated signal outputted from the corresponding demodulation means; transmission path judgment means for judging the transmission path according to the delay profile; reliability information generation means for generating reliability information indicating reliability of the demodulated signal outputted from each of the demodulation means, according to the noise component and the judgment result of the transmission path judgment means; weight coefficient calculation means for calculating a weight coefficient used when synthesizing the demodulated signals outputted from the respective demodulation means according to the reliability information; and synthesis means for synthesizing the demodulated signals outputted from the respective demodulation means according to the weight coefficient.