Patent ID: 9455860
Filing Date: 2016-09-27
CPC Classification: H04L

Claim Text:
1. An apparatus for crest factor reduction, comprising: a plurality of peak detectors respectively corresponding to a plurality of paths, each peak detector being configured for detecting a peak from one input signal on one corresponding path of the plurality of paths; a statistical multiplexer, configured for statistically multiplexing the peaks from the plurality of peak detectors; an allocator, configured for allocating one of the multiplexed peaks to one of a plurality of peak cancellation units; the plurality of peak cancellation units, each configured for generating, for an allocated peak, a cancellation peak; a plurality of de-multiplexers respectively corresponding to the plurality of peak cancellation units, each de-multiplexer being configured for de-multiplexing an cancellation peak onto one corresponding path of the plurality of paths; a plurality of summation units respectively corresponding to the plurality of paths, each configured for summing the de-multiplexed cancellation peaks on one corresponding path of the plurality of paths; and a plurality of subtraction units corresponding to the plurality of paths, each configured for subtracting the summed cancellation peaks from one of the input signals on one corresponding path of the plurality of paths to obtain a peak-cancelled signal.