×

Method and system for adaptive peak to average power ratio reduction in orthogonal frequency division multiplexing communication networks

  • US 8,331,466 B2
  • Filed: 10/03/2008
  • Issued: 12/11/2012
  • Est. Priority Date: 10/04/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method for adaptively reducing a peak-to-average power ratio in a communication system, the method comprising:

  • clipping energy from at least one peak of a modulated signal, the modulated signal including a plurality of sub-carriers;

    adaptively selecting at least one data sub-carrier for peak-to-average power ratio reduction use based on known scheduling information; and

    distributing the clipped energy among the at least one data sub-carrier by filtering the clipped energy using a filter having coefficients based at least in part on a re-growth control factor, wherein the re-growth control factor is used to scale the coefficients of the filter, wherein a value of the re-growth control factor is between 0 and 1, wherein the re-growth control factor is used to control re-growth of the at least one peak after said clipping and iteratively repeating the distribution based on the regrowth control factor.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×