Apparatus and method for maximizing frequency offset tracking pe

Details Apparatus and method for maximizing frequency offset tracking pe Apparatus and method for maximizing frequency offset tracking pe

1997-07-21

1998-09-22

Chin, Wellington

Pulse or digital communications

Receivers

Automatic frequency control

375327, 4551922, H04L 2707

Patent

active

058126155

ABSTRACT:
An automatic frequency control loop structure utilizes a dual selection automatic frequency control unit which is coupled to a differential phase unit and a coherent phase unit to provide a frequency corrected received signal output for efficient tracking of frequency offset drift and a much lower probability of loss of automatic frequency control loop lock. Thus, a signal from a coherent carrier recovery process provides additional benefit by utilization in adjusting frequency offset tracking performance.

REFERENCES:
patent: 3911219 (1975-10-01), Mullins
patent: 4715001 (1987-12-01), Deem et al.
patent: 5247382 (1993-09-01), Suzuki
patent: 5594757 (1997-01-01), Rohani

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