| 摘要 |
An OFDM receiver apparatus for performing a diversity reception, wherein the power consumption and the cost can be reduced. An OFDM signal transmitted from a transmitter apparatus is received by two antennas (11A,11B). An antenna switching part (12) selectively outputs the signal, which was received by one of the two antennas, to a tuner (13). A signal outputted from the tuner (13) is supplied through an A/D converter (14), a quadrature detecting circuit (15) and through an FFT calculating circuit (16) to an equalizing circuit (17). A deviation determining circuit (21) calculates the positional deviations, on the constellation, of I and Q component signals outputted from the equalizing circuit (17). When the positional deviations exceed a predetermined threshold value (when the positional deviations of the signals are large), a deciding circuit (22) sends, to the antenna switching part (12), a control signal that instructs it to switch to the other antenna. ® KIPO & WIPO 2008
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