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Multi-carrier transmission systems

  • US 6,493,395 B1
  • Filed: 06/02/1999
  • Issued: 12/10/2002
  • Est. Priority Date: 09/02/1996
  • Status: Expired due to Term
First Claim
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1. A receiver for use with a multi-carrier transmission system using orthogonal carriers with quadrature amplitude modulation (QAM) constellations, in which a receiver sampling clock is phase locked to a pilot carrier, the receiver comprising:

  • selection means for selecting a frame from a stream of received time domain data;

    a one-frequency discrete Fourier transform (DFT) means for performing a one-frequency DFT on the selected frame, to produce a complex number, representing the pilot carrier, having an argument which is the phase of the pilot carrier; and

    processor means for generating the argument from the complex number.

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