Patent ID: 8831117

Claim:
A method for signal processing, comprising: reducing peaks of time domain waveforms; converting the time domain waveforms having reduced peaks to clipped frequency domain symbols; performing, using a constellation points adjustment module, an Active Constellation Extension (“ACE”) procedure, wherein for each of four quadrants, each symbol of the clipped frequency domain symbols in a quadrant thereof moved during the ACE procedure is moved to an extension region from the ACE procedure defined by intersecting axes within the quadrant thereof; defining, for each of the four quadrants, a respective bounding perimeter comprising an arc at a distance of an error vector magnitude target from a radius of a point of origin in the quadrant thereof; bounding, for each of the four quadrants, a bounded region established by intersection of the arc with the intersecting axes of the extension region associated therewith; wherein the bounded region is not all but a portion of the extension region; identifying, for each of the four quadrants, symbols outside of the arc of the bounded region but within the extension region after the ACE procedure; translating, for each of the four quadrants, the identified symbols thereof in the extension region thereof but outside of the bounded region associated therewith to the bounded region associated therewith; determining a peak-to-average power ratio after the translating of the identified symbols to the bounded region; and determining whether to perform another ACE procedure based upon the peak-to-average power ratio determined.