Method of removing DC offset for a ZIF-based GSM radio...

Details Method of removing DC offset for a ZIF-based GSM radio... Method of removing DC offset for a ZIF-based GSM radio...

2006-02-14

2006-02-14

Vo, Don N. (Department: 2631)

Pulse or digital communications

Receivers

Interference or noise reduction

Reexamination Certificate

active

06999537

ABSTRACT:
Disclosed is a method and apparatus for removing DC offsets in a ZIF radio device, the method including the steps of converting a signal to digital samples, calculating a DC burst by capturing an entire burst and a portion of the adjacent channels, removing DC offset from the digital signal, rotating out frequency error from the digital signal, and performing channel filtering of the digital signal. The system includes a digital DC offset removal circuit, which includes an analog to digital converter, a channel filter connected to the converter, and a rotator system that is connected to the channel filter input and output. The rotator system includes a DC estimator connected to the channel filter input, a DC offset removal component connected to the DC estimator, and a rotator connected to the DC offset removal component, the output of the rotator being connected to the channel filter input.

REFERENCES:
patent: 5805478 (1998-09-01), Kim
patent: 6009126 (1999-12-01), Van Bezooijen
patent: 6868128 (2005-03-01), Lane
patent: 2003/0058965 (2003-03-01), Ezquerra-Moreu et al.
patent: 2003/0174641 (2003-09-01), Rahman
patent: 19933266 (2000-11-01), None
patent: 0069023 (2000-11-01), None
patent: 02056490 (2002-07-01), None
patent: 02067420 (2002-08-01), None

Affiliated with

Also associated with

Rating

Method of removing DC offset for a ZIF-based GSM radio... 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 of removing DC offset for a ZIF-based GSM radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of removing DC offset for a ZIF-based GSM radio... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3685427