Title: System and method for reducing dynamic range of modulated signals without increasing out-of-band-power
Application Number: 200610138798 Application Date: 2006.11.15
Publication Number: 1984114 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04L27/34;H04J13/00
Applicant(s) Name: Agilent Technologies Inc. Address:
Inventor(s) Name: Corredoura Paul L.
Attorney & Agent: wangyi
Abstract:
    The invention discloses a signal processing system (1002) and method (900) which operates to reduce a crest factor of an input signal without increasing the signal bandwidth. An embodiment provides for identifying (908) peaks in the input signal which exceed a clipping threshold. The characteristics of such identified peaks can then be used to determine a clipping wavelet which can be added (916) to a waveform of the input signal so that the peak will not exceed the clipping threshold. The addition of the wavelet is a linear operation, and the clipping wavelet is limited in terms of bandwidth and time, such that it does not increase the out-of-band spectral content of the input signal.
Time: 10