SIGNAL GAIN CONTROL APPARATUS

摘要

PROBLEM TO BE SOLVED: To solve a problem of a conventional signal gain control apparatus that has deteriorated the quality of a demodulated signal because the apparatus cannot control an amplitude level of a received OFDM signal within a proper range. SOLUTION: The signal gain control apparatus includes: a signal transformation means 2 for applying fast Fourier transform to a signal group amplified by a signal amplifier means 1; and a signal generating means 3 for generating a gain control signal on the basis of the amplitude level of the detected signal group subjected to fast Fourier transform by the signal transformation means. COPYRIGHT: (C)2003,JPO