Patent ID: 7436897

Claim:
An orthogonal frequency division multiplexing (OFDM) receiving apparatus for selectively using a plurality of orthogonal frequency division multiplexing reception signals, said orthogonal frequency division multiplexing receiving apparatus comprising: a plurality of receiving antennas; a carrier restoring section provided for each of said plurality of receiving antennas, said each carrier restoring section including: a radio frequency and intermediate frequency section configured to down-convert an OFDM reception signal from a radio frequency signal to a baseband signal, a digital converter configured to convert an analog baseband signal received from the radio frequency and intermediate frequency section into a digital signal, and a Fourier-transform section configured to Fourier-transform said digital signal converted by said digital converter and extract a carrier in frequency domain from said Fourier-transformed digital signal; a sub-carrier selecting section configured to compare powers of output signals from said each carrier restoring section provided for each sub-carrier, and selectively combine the powers of said output signals for each sub-carrier; and a power controlling section configured to control power supplied to said each carrier restoring section, based on sub-carrier selection information from said sub-carrier selecting section.