Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment
Reexamination Certificate
2005-09-20
2005-09-20
Chin, Stephen (Department: 2634)
Pulse or digital communications
Receivers
Automatic baseline or threshold adjustment
C375S285000, C375S317000
Reexamination Certificate
active
06947496
ABSTRACT:
A method for refining a DC-Offset estimate and removing of the DC-Offset includes the step of determining if any AM is present (602). If AM is determined to be present, it is next determined if the I and Q path DC-Offset estimates are closely matched, if they are, then only a single search using the average of the I and Q path estimates is used (608). If it determined however, that the two path estimates are not closely matched, than two searches are performed, one for each path (610). After this, the blocking signals are searched for up to a predetermined number and the DC-Offset vector is generated (612). Once the DC-Offset vector is generated, the DC-Offset is removed from the received signal (614). After which it is determined if the AM level is high (616), and if so, a transient correction routine is performed (618).
REFERENCES:
patent: 3953805 (1976-04-01), Couvillon
patent: 4091453 (1978-05-01), Martin
patent: 4155087 (1979-05-01), Okrent
patent: 5241702 (1993-08-01), Dent
patent: 5422889 (1995-06-01), Sevenhans et al.
patent: 5459679 (1995-10-01), Ziperovich
patent: 5541597 (1996-07-01), Chi-Mao
patent: 5579347 (1996-11-01), Lindquist et al.
patent: 5760629 (1998-06-01), Urabe et al.
patent: 5793817 (1998-08-01), Wilson
patent: 5838735 (1998-11-01), Khullar
patent: 2002/0029132 (2002-03-01), Takahashi
patent: 2002/0075013 (2002-06-01), Schell
patent: 2002/0137487 (2002-09-01), Yochem
patent: 0 594 694 (1994-05-01), None
patent: 0 594 894 (1999-03-01), None
patent: 2234187 (1991-01-01), None
Audinot Pascal
Ezquerra-Moreu Angel
Brady III Wade James
Chin Stephen
Lu Jia W.
Neerings Ronald O.
Telecky , Jr. Frederick J.
LandOfFree
Method for refining a DC-offset estimate and removing the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for refining a DC-offset estimate and removing the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for refining a DC-offset estimate and removing the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3376750