Phase jitter correction arrangement

Details Phase jitter correction arrangement Phase jitter correction arrangement

1990-08-02

1992-05-19

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375118, 328155, H04L 2508

Patent

active

051154528

ABSTRACT:
In a communications system, a transmitted signal is typically impaired by phase jitter attributed to power line harmonics and ringing voltages present in a communications channel. In order to properly recover the transmitted signal, the phase jitter in a received signal needs to be eliminated. To this end, an infinite-impulse-response (IIR) filter arrangement is employed in a receiver to estimate the phase jitter and is followed by a demodulator which substantially removes the jitter based on the estimate. The transfer function of this IIR filter arrangement is a function of the autocorrelation of a phase error, the latter being indicative of the difference between the phase jitter in the received signal and the jitter estimate.

REFERENCES:
patent: 4253184 (1981-02-01), Gitlin et al.
patent: 4320526 (1982-03-01), Gitlin
patent: 4777640 (1988-10-01), Turner et al.
patent: 4847864 (1989-07-01), Cupo
patent: 4953186 (1990-08-01), Levy et al.

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