Patent ID: 9154168
Filing Date: 2015-10-06
Classification: H04B,H04L

Abstract:
1. A method of reducing a peak to average power ratio (PAR) of a signal comprising: comparing an input signal with a compressed signal to generate an error signal indicating distortion between the input signal and the compressed signal; filtering the error signal based on an in-band frequency range to generate an in-band error signal indicating in-band distortion of the compressed signal with respect to the input signal from which the compressed signal is generated; filtering the error signal based on an out-of-band frequency range to generate an out-of-band error signal indicating out-of-band distortion of the compressed signal with respect to the input signal; applying an in-band gain to the in-band error signal to generate an adjusted in-band error signal; applying an out-of-band gain to the out-of-band error signal to generate an adjusted out-of-band error signal; and combining the compressed signal with the adjusted in-band error signal and the adjusted out-of-band error signal to generate an output signal, the compressed signal being combined with the adjusted in-band error signal and the adjusted out-of-band error signal, and the in-band gain and the out-of-band gain being based on the output signal such that distortion of the output signal is reduced with respect to distortion of the compressed signal.