Amplifiers – Hum or noise or distortion bucking introduced into signal...
Reexamination Certificate
2005-02-08
2005-02-08
Nguyen, Khanh V. (Department: 2817)
Amplifiers
Hum or noise or distortion bucking introduced into signal...
C330S136000, C375S297000
Reexamination Certificate
active
06853246
ABSTRACT:
An adaptive predistortion system for use with a power amplifier having a nonlinear amplification characteristic and a method of adaptively predistorting a signal is provided. In one embodiment, the adaptive predistortion system includes a coefficient update subsystem coupled to an output of the power amplifier and configured to update a set of predistortion coefficients using an iterative process based on an output signal of the power amplifier. Additionally, the adaptive predistortion system includes a predistortion filter subsystem coupled to the coefficient update subsystem and configured to employ the set of predistortion coefficients to reduce a level of distortion associated with the nonlinear amplification characteristic.
REFERENCES:
patent: 5892397 (1999-04-01), Belcher et al.
patent: 6141390 (2000-10-01), Cova
patent: 6240278 (2001-05-01), Midya et al.
patent: 6246286 (2001-06-01), Persson
patent: 6314142 (2001-11-01), Perthold et al.
patent: 6373902 (2002-04-01), Park et al.
patent: 6400774 (2002-06-01), Matsuoka et al.
patent: 6462617 (2002-10-01), Kim
patent: 6512417 (2003-01-01), Booth et al.
patent: 6587514 (2003-07-01), Wright et al.
U.S. Appl. No. 09/911,139 entitled “Digital Predistortion Technique for WCDMA Wireless Communication System and Method of Operation Thereof” filed Jul. 23, 2001.
“Minimum Distortion Power Polynomial Model (MDP-PM) of Nonlinear Power Amplifiers and Its Application on Analog Predistorters” by Haobo Lai and Y. Bar-Ness; (4 pages): VTC 99 Fall; Sep. 1999.
Bauder Ruediger
Kim Young M.
Yan Qing
Yiin Jeffrey L.
Agere Systems Inc.
Nguyen Khanh V.
LandOfFree
Adaptive predistortion system and a method of adaptively... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive predistortion system and a method of adaptively..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive predistortion system and a method of adaptively... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3500571