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Diversity receiver, and method for receiving orthogonal frequency division multiplex signal

  • US 20040022215A1
  • Filed: 06/11/2003
  • Published: 02/05/2004
  • Est. Priority Date: 12/12/2000
  • Status: Active Grant
First Claim
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1. A diversity receiver for receiving an orthogonal frequency division multiplex signal to by using a plurality of antennas, each of symbol periods of the signal consisting of an effective symbol section and a guard interval section, the diversity receiver comprising:

  • a plurality of amplification means for individually amplifying a signal received at each of the antennas;

    a plurality of attenuation means each for individually attenuating each of the received signals amplified by each of said amplification means;

    signal synthesis means for coupling a plurality of received signals attenuated by said attenuation means and generating a synthesized received signal;

    control means for individually controlling an attenuation amount of each of said attenuation means; and

    demodulation means for demodulating the synthesized received signal to obtain a digital signal, wherein said control means operates to adjust the attenuation amount of each of said attenuation means in such a manner that said control means selectively supplies said signal synthesis means with a received signal received at least one of the antennas, and if received signals received at two or more antennas are to be supplied, said control means additionally supplies said signal synthesis means with only a received signal or signals contributing to a rise of a level of the synthesized received signal.

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