Patent ID: 8175204
Filing Date: 2012-05-08
Classification: H04L

Abstract:
1. A receiving device comprising: pilot extracting means for extracting a pilot signal from an OFDM (Orthogonal Frequency Division Multiplexing) signal in which said pilot signal is arranged at a plurality of predetermined positions; first estimating means for estimating transmission line characteristics as characteristics of a transmission line of said OFDM signal with respect to said pilot signal using said pilot signal, and outputting transmission line characteristic data indicating the transmission line characteristics; second estimating means for estimating said transmission line characteristics in which interpolation in a time direction is performed using said transmission line characteristic data with respect to said pilot signal, and outputting transmission line characteristic data indicating the transmission line characteristics; third estimating means for estimating said transmission line characteristics in which interpolation in a frequency direction is performed by filtering the transmission line characteristic data indicating said transmission line characteristics in which interpolation in the time direction is performed by an interpolating filter used for interpolation, and outputting transmission line characteristic data indicating the transmission line characteristics; distortion correcting means for correcting distortion of said OFDM signal using the transmission line characteristic data indicating said transmission line characteristics in which interpolation in said frequency direction is performed; and filter controlling means for controlling a pass band of said interpolating filter, said filter controlling means being capable of control that makes said pass band of said interpolating filter a plurality of bands.