Patent ID: 8175177

Claim:
A method for reducing a peak to average power ratio of a signal in a wireless communication system, the method comprising: modulating a data stream into a plurality of symbols; dividing the plurality of symbols into symbol groups; applying a Fourier transform to each of the symbol groups; optionally applying a delay to at least one of the transformed symbol groups; calculating a peak to average power ratio of the symbol groups; determining whether the peak to average power ratio of the symbol groups is below a predetermined value; reapplying a delay to at least one of the transformed symbol groups if the peak to average power ratio of the symbol groups is not below the predetermined value; recombining all symbol groups; and recalculating the peak to average power ratio of the recombined symbol groups, wherein the determining, reapplying, recombining and recalculating steps are repeated until the peak to average power ratio of the recombined symbol groups is below the predetermined value or a minimum possible peak to average power ratio value is obtained.