Patent ID: 7170952
Filing Date: 2007-01-30
Classification: H04B,H04L

Abstract:
1. A communication system, comprising: a communication signal source providing a band limited communication signal wherein said signal source comprises a modulation filter for limiting the bandwidth of the communication signal; and a peak reduction unit coupled to receive said band limited communication signal and provide a band limited peak reduced output signal, the peak reduction unit comprising a circuit for providing a peak reduction correction waveform corresponding to the difference between the communication signal and the communication signal hard limited to a limit value, a correction filter for filtering the peak reduction correction waveform and providing a band limited peak reduction correction signal corresponding to the band limits of the communication signal, wherein said correction filter is substantially the same as said modulation filter, and a combiner for combining said band limited communication signal and said band limited peak reduction correction signal to provide said band limited peak reduced output signal.