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

  • US 7,769,104 B2
  • Filed: 10/22/2008
  • Issued: 08/03/2010
  • Est. Priority Date: 11/09/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method to scramble the phase characteristics of carriers for multicarrier communications comprising:

  • assigning a carrier number to at least one carrier in a multicarrier symbol;

    modulating, by a modulator, the at least one carrier with a QAM (Quadrature Amplitude Modulation) signal;

    determining a phase shift for the at least one carrier based on the carrier number assigned to the at least one carrier wherein the phase shift is determined independently of the QAM signal; and

    combining the phase shift with a phase characteristic of the at least one carrier so as to substantially scramble the phase characteristics of the carrier.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×