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Radio receiver

  • US 20030081703A1
  • Filed: 04/01/2002
  • Published: 05/01/2003
  • Est. Priority Date: 10/30/2001
  • Status: Active Grant
First Claim
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1. A radio receiver comprising:

  • a detecting section for performing quasi-synchronous detection on a signal that is modulated with a frame, and for outputting a baseband signal, the frame being a sequence of slots each of which includes known information and possibly includes words having a steep autocorrelation characteristic and a small and gentle cross-correlation characteristic;

    a synchronizing section for performing frame synchronization with a frame indicated by said baseband signal;

    a vector extracting section for extracting a sequence of first vectors and a sequence of second vectors by analyzing said baseband signal based on a formation of said frame, the sequence of first vectors indicating a sequence of words individually included in said slots, the sequence of second vectors indicating said known information included in said slots;

    a channel inferring section for obtaining an error in said first vectors and said second vectors from deviations of particular symbol positions to be indicated in a signal space by said sequence of first vectors and said sequence of second vectors; and

    a transmission-characteristic compensating section for compensating for an error in a vector indicating said baseband signal in said signal space, the error being obtained by said channel inferring section.

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