| 摘要 |
The invention provides 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 an input signal on a corresponding path; 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 the 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 the cancellation peak onto the corresponding path; a plurality of summation units respectively corresponding to the plurality of paths, each configured for summing the de-multiplexed cancellation peaks on one path; and a plurality of subtraction units respectively corresponding to the plurality of paths, each configured for subtracting the summed cancellation peaks from the input signal on the same path to obtain a peak-cancelled signal. The invention also provides a method of crest factor reduction. |
