Coherent PSK demodulator with adaptive line enhancer

Details Coherent PSK demodulator with adaptive line enhancer Coherent PSK demodulator with adaptive line enhancer

1990-01-25

1992-02-18

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 86, 329304, H03D 322, H04L 2722

Patent

active

050900277

ABSTRACT:
A coherent PSK demodulator includes a frequency multiplier for multiplying the frequency of an incoming M-ary PSK signal by a factor M to extract a carrier component of the PSK signal. An adaptive line enhancer is connected to the frequency multiplier for emphasizing the line spectrum of the extracted carrier component. A frequency divider is connected to the output of the enhancer to divide its frequency by a factor M and applies its output to a product demodulator as a local carrier for demodulating the incoming M-ary PSK signal. In a preferred embodiment, a synchronizer is connected between the output of the adaptive line enhancer and the frequency divider. Alternatively, a closed-loop phase error canceller is connected to the output of the product demodulator.

REFERENCES:
patent: 4653071 (1987-03-01), Sgrignol
patent: 4875108 (1989-10-01), Minuhin et al.
patent: 4975927 (1990-12-01), Yoshida
Widrow et al, "Adaptive Noise Cancelling: Principles and Applications", Proceedings of IEEE, vol. 63, No. 12, Dec. 1975, pp. 1692-1717.

Affiliated with

Also associated with

Rating

Coherent PSK demodulator with adaptive line enhancer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coherent PSK demodulator with adaptive line enhancer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent PSK demodulator with adaptive line enhancer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1829326