Carrier wave recovery system

Details Carrier wave recovery system Carrier wave recovery system

1986-08-06

1989-02-21

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 93, 375 97, 375106, 370104, H04L 2706, H04J 306

Patent

active

048072540

ABSTRACT:
A carrier wave recovery system for a slotted ALOHA system is disclosed. In a time slot where a burst is not inputted, the frequency of oscillator means is locked to a mean value of carrier wave frequencies of bursts which were received in the past, thereby allowing a minimum of initial frequency offset to occur. A voltage controlled oscillator frequency is controlled at initial pull-in to an average frequency of the highest and lowest carrier wave frequencies of an input burst signal.

REFERENCES:
patent: 4561099 (1985-12-01), Atsugi et al.
patent: 4563767 (1986-01-01), Brandt

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