Nonlinear distortion compensation circuit with feedback and...

Telecommunications – Transmitter – With feedback of modulated output signal

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S063100, C455S114200, C455S114300, C375S295000, C375S296000, C375S297000, C375S285000, C330S149000

Reexamination Certificate

active

10518185

ABSTRACT:
A phase/amplitude control section controls the phase and amplitude of at least one of the signals: a distributed signal distributed by a modulation signal distributor and a reference signal based on an orthogonal base-band signal. A signal combiner combines a combinatory signal according to the distributed signal and the reference signal whose phase and amplitude have been controlled. A reference table updating section updates non-linear distortion compensating data according to the combinatory signal subjected to A/D conversion and the orthogonal base-band signal. With this configuration, since a known signal component is removed from the combinatory signal, the change amount of the signal input to the A/D converter of a feedback system circuit is reduced and the A/D converter of the feedback system circuit need not have a wide dynamic range performance.

REFERENCES:
patent: 6091941 (2000-07-01), Moriyama et al.
patent: 6188732 (2001-02-01), Rha
patent: 6246286 (2001-06-01), Persson
patent: 6400774 (2002-06-01), Matsuoka et al.
patent: 6418173 (2002-07-01), Matsuoka et al.
patent: 6980604 (2005-12-01), Kubo et al.
patent: 7012969 (2006-03-01), Ode et al.
patent: 7200367 (2007-04-01), Wright et al.
patent: 2001/0005402 (2001-06-01), Nagatani et al.
patent: 2001/0051504 (2001-12-01), Kubo et al.
patent: 2002/0025790 (2002-02-01), Matsuoka
patent: 2002/0064236 (2002-05-01), Matsuoka et al.
patent: 2002/0079965 (2002-06-01), Maniwa et al.
patent: 2002/0097811 (2002-07-01), Kubo et al.
patent: 06-037831 (1994-02-01), None
patent: 06037831 (1994-02-01), None
patent: 2001-268144 (2001-09-01), None
patent: 2001-345718 (2001-12-01), None
patent: 2002-057733 (2002-02-01), None
patent: 2002057733 (2002-02-01), None
patent: 2002-141754 (2002-05-01), None
International Search Report for application No. PCT/JP03/12403 dated Dec. 9, 2003.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Nonlinear distortion compensation circuit with feedback and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-3889861

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.