Adaptive predistortion for a transmit system

Details Adaptive predistortion for a transmit system Adaptive predistortion for a transmit system

2006-04-11

2006-04-11

Nguyen, Patricia (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C330S107000, C330S136000

Reexamination Certificate

active

07026871

ABSTRACT:
Systems, methods, and devices relating to the provision of deliberate predistortion to an input signal to compensate for distortions introduced by an amplifier subsystem. An input signal is received by a signal processing system which includes a predistortion subsystem. The input signal is decomposed and the fragments are then predistorted by the predistortion subsystem by applying a deliberate predistortion to the fragments. The predistorted fragments are then separately processed and recombined to arrive at the system output signal. The predistortion subsystem adaptively adjusts based on characteristics of the system output signal. Also, the predistortion subsystem is equipped with a control system that is state based—the state of the predistortion subsystem is dependent upon the prevailing conditions and, when required, the control system switches the state of the predistortion subsystem. A feedback signal, a replica of the system output signal, is used in updating lookup table entries used to determine the predistortion.

REFERENCES:
patent: 5880633 (1999-03-01), Leizerovich et al.
patent: 6043707 (2000-03-01), Budnik
patent: 6072364 (2000-06-01), Jeckeln et al.
patent: 6208207 (2001-03-01), Cavers
patent: 6211733 (2001-04-01), Gentzler
patent: 6342810 (2002-01-01), Wright et al.
patent: 6388518 (2002-05-01), Miyatani
patent: 2001/0054974 (2001-12-01), Wright
patent: 2002/0034260 (2002-03-01), Kim
patent: 2002/0101937 (2002-08-01), Antonio et al.
patent: 1 313 278 (2003-05-01), None
patent: WO 01/05026 (2001-01-01), None
patent: WO 01/56146 (2001-08-01), None
Michael Faulkner; Adaptive Linearization Using Predistortion—Experimental Results, IEEE Transactions on Vehicular Technology; May 1994; pp 323-332; vol. 43, No. 2.

Affiliated with

Also associated with

Rating

Adaptive predistortion for a transmit system 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 for a transmit system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive predistortion for a transmit system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3612304