Signature matching for location determination in wireless commun

Details Signature matching for location determination in wireless commun Signature matching for location determination in wireless commun

1998-07-14

2000-08-29

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455115, 455 671, H04Q 720

Patent

active

061120952

ABSTRACT:
A method and apparatus for wireless location finding determines a set of likely locations from a signal covariance matrix R, a set of array calibration vectors {a(.theta.)}, and a set of calibrated signal covariance matrices {R.sub.k } corresponding to calibrated locations. From these quantities, an angular energy distribution function B(.theta.) is calculated from R and a(.theta.), and compared to a set of calibrated angular energy distribution functions B.sub.1 (.theta.), . . . , B.sub.N (.theta.) corresponding to the set of calibrated signal covariance matrices R.sub.1, . . . , R.sub.N. The function B(.theta.) is then compared with each of the calibrated functions B.sub.1 (.theta.), . . . , B.sub.N (.theta.) to determine those calibrated functions that most closely match the calculated function B(.theta.). From these calculations a set of likely locations is then determined.

REFERENCES:
patent: 4750147 (1988-06-01), Roy, III et al.
patent: 5327144 (1994-07-01), Stilp et al.
patent: 5461610 (1995-10-01), Weerackody
patent: 5512908 (1996-04-01), Herrick
patent: 5515378 (1996-05-01), Roy, III et al.
patent: 5546090 (1996-08-01), Roy, III et al.
patent: 5548583 (1996-08-01), Bustamante
patent: 5570412 (1996-10-01), LeBlanc
patent: 5592490 (1997-01-01), Barratt et al.
patent: 5634199 (1997-05-01), Gerlach et al.
patent: 5987378 (1999-11-01), Schipper et al.

Affiliated with

Also associated with

Rating

Signature matching for location determination in wireless commun does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signature matching for location determination in wireless commun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signature matching for location determination in wireless commun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1258203