Phase rotation of IQ origin

Details Phase rotation of IQ origin Phase rotation of IQ origin

2007-06-19

2010-11-23

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S295000, C375S296000, C375S300000

Reexamination Certificate

active

07839954

ABSTRACT:
Sampled IQ values at the origin are revalued by applying a minimum distance, or radius, away from the (0,0) coordinate in the IQ domain, and applying a rotation about the origin for consecutive (0,0) samples, thereby improving communication performance. A direction of rotation is able to be predetermined or dynamically determined according to a correction look-up table or an IQ trajectory.

REFERENCES:
patent: 5604770 (1997-02-01), Fetz
patent: 5990738 (1999-11-01), Wright et al.
patent: 6421398 (2002-07-01), McVey
patent: 7054385 (2006-05-01), Booth et al.
patent: 7126999 (2006-10-01), Dent
patent: 2003/0012289 (2003-01-01), Lindoff
patent: 2008/0064343 (2008-03-01), Lewis

Affiliated with

Also associated with

Rating

Phase rotation of IQ origin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase rotation of IQ origin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase rotation of IQ origin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4151898