Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-01-16
2007-01-16
Gelin, Jean (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S103000, C455S456500
Reexamination Certificate
active
10754428
ABSTRACT:
The present invention provides a method of calibrating a wireless tracking system and a method of tracking a mobile unit in a wireless local area network. The method includes providing at least one calibration signal using a mobile unit having a first plurality of antennae while the mobile unit is proximate at least one predetermined location and receiving a plurality of signals at a second plurality of antennae in response to providing the at least one calibration signal. The method also includes determining a portion of a transmission matrix using the plurality of received signals and the at least one calibration signal and associating the portion of the transmission matrix with the predetermined location.
REFERENCES:
patent: 5508707 (1996-04-01), LeBlanc et al.
patent: 6104344 (2000-08-01), Wax et al.
patent: 6909399 (2005-06-01), Zegelin et al.
patent: 2004/0023621 (2004-02-01), Sugar et al.
patent: 2004/0266465 (2004-12-01), Zegelin et al.
patent: WO 00/34799 (2000-06-01), None
International Search Report dated Jun. 6, 2005.
Doan Phuoc
Gelin Jean
Ingrassia Fisher & Lorenz P.C.
Symbol Technologies Inc.
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