Patent ID: 7012970

Claim:
A peak to average reduction apparatus for reducing peak power requirements of a multi-channel transmitter, the apparatus comprising in combination: a Fourier Transform Matrix (FTM) coupled to at least one input signals for providing a plurality of output signals each comprising a combination of phase shifted versions of said at least one input signals; a processing unit coupled to said plurality of output signals for limiting a peak value for each of said plurality of output signals to provide a plurality of peak limited output signals, wherein said processing unit further comprises a clipping function that operates to limit peaks of said each of said plurality of output signals, wherein said clipping function is a windowed clipping function that operates to limit peaks according to a predetermined function that lowers the probability that said peak value will exceed a predetermined value for said each of said plurality of output signals; and wherein said plurality of peak limited output signals are suitable for generating a plurality of low level signals for driving the multi-channel transmitter.