Pulse or digital communications – Repeaters – Testing
Patent
1995-09-29
1998-02-17
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375205, 375227, 455 69, 455 70, 4552263, 370318, 395 3, H04B 1500
Patent
active
057198985
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.
REFERENCES:
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5093840 (1992-03-01), Schilling
patent: 5179571 (1993-01-01), Schilling
patent: 5218618 (1993-06-01), Sagey
patent: 5224120 (1993-06-01), Schilling
patent: 5228053 (1993-07-01), Miller et al.
patent: 5245629 (1993-09-01), Hall
patent: 5257283 (1993-10-01), Gilhousen et al.
patent: 5265119 (1993-11-01), Gilhousen et al.
patent: 5299226 (1994-03-01), Schilling
patent: 5483550 (1996-01-01), Hulbert
patent: 5559790 (1996-09-01), Yano et al.
patent: 5566165 (1996-10-01), Sawahashi et al.
R.F. Ormondroyd,"Power Control For Spread-Spectrum Systems", Conference on Communications Equipment and Systems; Apr. 20-22, 1982, pp. 109-115.
Davidovici Sorin
Kanterakis Emmanuel
Chin Stephen
Golden Bridge Technology Inc.
Le Amanda T.
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