Pulse or digital communications – Repeaters – Testing
Patent
1998-01-14
1999-10-05
Pham, Chi H.
Pulse or digital communications
Repeaters
Testing
375207, 455 383, 455522, 706 1, H04B 1500, H04K 100, H04L 2730
Patent
active
059635835
ABSTRACT:
A fuzzy-logic spread-spectrum adaptive power control system comprising a base station and a plurality of remote units. The base station receives a spread-spectrum signal, and samples the despread spread-spectrum signal at a peak correlation time of the data channel, and at a non-peak correlation time of the data channel. This in turn generates a signal level and a noise level, respectively. A signal-to-noise ratio calculator generates a signal-to-noise ratio from the signal level and the noise level. A fuzzy-logic controller compares the signal-to-noise ratio to a set of predetermined thresholds, and using a state machine, generates a control signal which is thereby transmitted to the remote unit, indicating the amount by which to increase or decrease transmitted power. Each remote unit demodulates the control signal, and a transmitter controller adjusts a power level of the remote-unit spread-spectrum transmitter.
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Davidovici Sorin
Kanterakis Emmanuel
Golden Bridge Technology Inc.
Newman David
Pham Chi H.
Webster Bryan
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