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Transmission and reception in a hostile interference environment

  • US 5,488,632 A
  • Filed: 10/29/1992
  • Issued: 01/30/1996
  • Est. Priority Date: 03/30/1990
  • Status: Expired due to Term
First Claim
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1. Apparatus for receiving an orthogonal frequency division multiplex (OFDM) signal transmitted at low power in a frequency band subject to interference from other transmissions, said OFDM signal comprising a plurality of OFDM carriers modulated by a block of samples, comprising:

  • means for demodulating the received OFDM carriers so as to produce a block of values representing the block of samples modulating said OFDM carriers;

    means for decoding information contained in said sample values, the decoding means excluding from the decoding process sample values demodulated from OFDM carriers at frequencies likely to experience interference from said other transmissions; and

    means for outputting said decoded information.

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