System and method for calibration of frequency hopping

Details System and method for calibration of frequency hopping System and method for calibration of frequency hopping

1994-04-28

1995-09-26

Cain, David C.

Pulse or digital communications

Repeaters

Testing

380 34, H04B 1713

Patent

active

054540100

ABSTRACT:
A system and method for calibrating telecommunications systems employs frequency hopping techniques, and more particularly, employs linked compressor-expander (Lincompex) techniques in the transmission of any combination information waveform such as that generated by voice or digital data. A calibration tone sent at each channel frequency is compared against a reference frequency. Based on the results of the comparison, the information waveform is frequency compensated. Alternately, a calibration tone sent at an initial channel frequency is compared to a reference frequency to determine at total frequency error. The system then predicts the total frequency errors for successive channel frequencies. The system frequency compensates the information waveform based on the determined and predicted total frequency errors.

REFERENCES:
patent: 4271499 (1981-06-01), Leveque
patent: 4567588 (1986-01-01), Jerrim
patent: 4621365 (1986-11-01), Chiu
patent: 4907217 (1990-03-01), Leveque
patent: 5065451 (1991-11-01), Leveque

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