Patent ID: 7436759
Filing Date: 2008-10-14
Classification: H04L

Abstract:
1. A reception apparatus for receiving an orthogonal frequency division multiplexing (OFDM) signal having a plurality of pilot carriers, the pilot carriers being carriers transmitting predetermined pilot signals at predetermined symbols, the reception apparatus comprising: a Fourier transform section for transforming the received OFDM signal to a frequency-domain OFDM signal; a pilot signal generation section for generating and outputting the predetermined pilot signals as frequency-domain signals; a channel response calculation section for determining and outputting channel responses corresponding to the transmitted pilot signals based on the frequency-domain OFDM signal and the output of the pilot signal generation section for each of the pilot carriers among a plurality of carriers constituting the frequency-domain OFDM signal; a time axis interpolation section for determining and outputting, based on channel responses corresponding to first, second and third pilot signals transmitted sequentially in a same carrier, a channel response at a symbol between the second pilot signal and the third pilot signal; and a distortion compensation section for compensating a waveform distortion in the frequency-domain OFDM signal according to the channel response output from the time axis interpolation section.