Invention Grant
US09031157B2 PAPR reduction using clipping function depending on the peak value and the peak width
有权
根据峰值和峰值宽度，使用剪切功能的PAPR降低
- Patent Title: PAPR reduction using clipping function depending on the peak value and the peak width
- Patent Title (中): 根据峰值和峰值宽度，使用剪切功能的PAPR降低
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Application No.: US13820940Application Date: 2011-08-12
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Publication No.: US09031157B2Publication Date: 2015-05-12
- Inventor: Christophe Molko , Matti Limingoja
- Applicant: Christophe Molko , Matti Limingoja
- Agency: Duane Morris LLP
- Agent J. Rodman Steele, Jr.; Gregory M. Lefkowitz
- Priority: EP10176205 20100910
- International Application: PCT/EP2011/063979 WO 20110812
- International Announcement: WO2012/031855 WO 20120315
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L27/26
Abstract:
For clipping a signal with respect to a clipping threshold (Amax), a signal portion above the clipping threshold and a peak (Pk) in the signal portion are detected, a clipping function depending on end times (ts, te) of the signal portion, the amplitude of the detected peak and the clipping threshold is derived, and the signal portion is clipped by multiplying it by the clipping function. The first portion can be enlarged up to the lowest boundary points (t1+1, t2−1) on the first ascending portion and the last descending portion of the detected peak. Spectral leakage in the sidebands out to the frequency band of the clipped signal is eliminated by a filtering device. The filtered dipped signal to the input of the amplifier has peaks as close to the saturation threshold of a power amplifier as possible.
Public/Granted literature
- US20130230121A1 PAPR REDUCTION USING CLIPPING FUNCTION DEPENDING ON THE PEAK VALUE AND THE PEAK WIDTH Public/Granted day:2013-09-05
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