Reception apparatus, reception method and program

CAFC
  • US 8,045,945 B2
  • Filed: 02/26/2009
  • Issued: 10/25/2011
  • Est. Priority Date: 02/29/2008
  • Status: Expired due to Fees
First Claim
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1. A reception apparatus, comprising:

  • extraction means for extracting a pilot signal from an orthogonal frequency division multiplexing (OFDM) frequency domain signal;

    transmission line characteristic estimation means for estimating a transmission line characteristic in a time direction based on the pilot signal extracted by said extraction means;

    interpolation means for carrying out an interpolation process of interpolating a transmission line characteristic in a frequency direction based on the transmission line characteristic in the time direction estimated by said transmission line characteristic estimation means using a plurality of interpolation filters having different filter bands from each other to produce a plurality of signals representative of transmission line characteristics of all subcarriers;

    compensation means for producing a plurality of transmission line distortion compensated signals, from which components of distortion of the corresponding transmission lines are removed, based on the orthogonal frequency division multiplexing (OFDM) frequency domain signal and the signals representative of the transmission line characteristics of all subcarriers produced by said interpolation means;

    detection means for detecting the quality of the transmission line distortion compensated signals produced by said compensation means; and

    selection means for selecting one of the transmission line distortion compensated signals produced by said compensation means based on a result of the detection by said detection means.

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