Distortion compensating apparatus

Details Distortion compensating apparatus Distortion compensating apparatus

2006-03-14

2006-03-14

Tran, Khai (Department: 2637)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S295000, C375S297000, C375S285000, C330S149000

Reexamination Certificate

active

07012969

ABSTRACT:
Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.

REFERENCES:
patent: 6167273 (2000-12-01), Mandyam
patent: 6201490 (2001-03-01), Kawano et al.
patent: 6212378 (2001-04-01), Wismer
patent: 6230031 (2001-05-01), Barber
patent: 6400774 (2002-06-01), Matsuoka et al.
patent: 61-146004 (1986-07-01), None
patent: 10-233629 (1998-09-01), None
patent: 11-239191 (1999-08-01), None

Affiliated with

Also associated with

Rating

Distortion compensating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distortion compensating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distortion compensating apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3529682