System and method for descrambling the phase of the carriers in a multicarrier communications system

  • US 8,073,041 B1
  • Filed: 09/24/2007
  • Issued: 12/06/2011
  • Est. Priority Date: 11/09/1999
  • Status: Active Grant
First Claim
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1. A method, in a first multicarrier transceiver that uses a plurality of carrier signals for receiving a bit stream, wherein each carrier signal has a phase characteristic associated with the bit stream, the method comprising:

  • receiving the bit stream, wherein;

    each carrier signal is associated with a value determined independently of any bit value of the bit stream carried by that respective carrier signal, the value associated with each carrier signal determined by a pseudo-random number generator,a phase shift for each carrier signal is based on;

    the value associated with that carrier signal, andthe combining of a phase for each carrier signal with the phase characteristic of that respective carrier signal so as to substantially scramble the phase characteristics of the plurality of carrier signals, andmultiple carrier signals corresponding to the plurality of phase shifted and scrambled carrier signals are used by the first multicarrier transceiver to demodulate a same bit value of the received bit stream.

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