Telecommunications – Radiotelephone system – Security or fraud prevention
Patent
1996-09-19
1998-05-26
Chin, Tommy P.
Telecommunications
Radiotelephone system
Security or fraud prevention
455411, H03C 162, H04B 1700
Patent
active
057582777
ABSTRACT:
A transient analysis system that characterizes the transients in RF signals from radio transmitters. Transient characterization permits identification of the transmitter and is useful in cellular telephone fraud prevention systems. The characterization is based on the analysis of the chirp waveform or the complex auto-correlation sequence.
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Chin Tommy P.
Corsair Communications, Inc.
Lovejoy David E.
Vincent David R.
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