Method and apparatus for a unique word differential detection an

Details Method and apparatus for a unique word differential detection an Method and apparatus for a unique word differential detection an

1997-11-28

2000-07-11

Vo, Don N.

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

370514, H04L 706

Patent

active

060884118

ABSTRACT:
A unique word (UW) differential detection system to provide a system that can expand a measurement range for the carrier frequency offset of the quasi-synchronized detection signal while maintaining detection of unique word position at a high accuracy, and maintaining a resolution for the carrier frequency at a low level. In an initial acquisition mode, the detection system uses a first UW differential detection circuit with a symbol delay N (0.5<N.ltoreq.1) and a second differential detection circuit with a symbol delay N/2 to generate a first UW detection signal of a first quasi-synchronized detection signal and first frequency offset information. The first frequency offset information reduces frequency offset of a second quasi-synchronized detection signal for demodulating a data signal. Then, the mode turns to a fine tune acquisition mode, where a third UW differential detection circuit with a symbol delay M (1<M) operates to generate a second UW detection signal and a second UW detection signal as a verification check when the system detects a UW from a third quasi-synchronized detection signal.

REFERENCES:
patent: 4530103 (1985-07-01), Mosley, Jr. et al.
patent: 5276710 (1994-01-01), Iwasaki
patent: 5809009 (1998-09-01), Matsuoka et al.
patent: 5898665 (1999-04-01), Sawahashi et al.
patent: 5901180 (1999-05-01), Aslanis et al.
patent: 5901183 (1999-05-01), Garin et al.
patent: 5917864 (1999-06-01), Asahara
patent: 5953367 (1999-09-01), Zhodzicshsky et al.

Affiliated with

Also associated with

Rating

Method and apparatus for a unique word differential detection an 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 and apparatus for a unique word differential detection an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for a unique word differential detection an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-549757