Apparatus for cancelling periodic carrier phase jitters

Details Apparatus for cancelling periodic carrier phase jitters Apparatus for cancelling periodic carrier phase jitters

1985-02-19

1987-01-27

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

307511, 328162, 328155, H04L 702, H03L 700

Patent

active

046399399

ABSTRACT:
The apparatus includes circuits for detecting sequential carrier phases of a complex baseband signal and storing the detected carrier phases. A phase predictor is responsive to the detected carrier phases for producing a predicted carrier phase. A circuit is also provided for compensating for a carrier phase deviation of the complex baseband signal in response to the predicted phase. An error detector detects an error associated with data discriminated from the complex baseband signal and a controller controls the phase predictor to minimize the error.

REFERENCES:
patent: 3614623 (1971-10-01), McAuliffe
patent: 4320526 (1982-03-01), Gitlin
patent: 4447910 (1984-05-01), Smith et al.
patent: 4479258 (1984-10-01), Namiki

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