Phase noise correction circuit for a data transmission system

Details Phase noise correction circuit for a data transmission system Phase noise correction circuit for a data transmission system

1980-10-17

1983-01-25

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 57, 375119, 328155, 328162, H04B 1500

Patent

active

043707491

ABSTRACT:
A phase noise correction circuit for a synchronous data transmission system using symbols and including a decision circuit (33) at its receiving end for supplying an estimate of the transmitted symbols on the basis of the received symbols, wherein said correction circuit comprises a phase shifter circuit (36) located at the receiving end ahead of the decision circuit (33) and provided with a third-order phase-controlling feedback circuit (37) comprising:

REFERENCES:
patent: 3305798 (1967-02-01), Rappeport
patent: 3868603 (1975-02-01), Guidoux
patent: 3971996 (1976-07-01), Motley
patent: 3974449 (1976-08-01), Falconer
Jackson, Kaiser, McDonald, "An Approach to Implemention of Digital Filter", Sep. 1968, IEEE Transaction on Audio and Electroacoutics, pp. 413-421.
Shoichi Hosokawa, Kazumi Yamashita, "Second Order Recursive Digital Filter Using Delta Modulation", Dec. 1975 Memoirs of Faculty of Eng. Osaka City University.
R. B. Crow, "Third-Order Phase Locked Loop Receiver", Aug. 3, 1974, NASA Tech Brief, NASA Pasadena Office.
S. C. Gupta and Solem "Optimum Filter for Second and Third Order Phase Lock Loop by an Error Function Criterion", Jun. 1965 IEEE Transactions on Space Electronics and Telemetry, vol. 2, pp. 54-62.
M. Y. Levy "Adaptative Phase Correctors for Data Transmission Receivers", Jun. 10-14, 1979 International Conference on Communications, vol. 3 or 4, pp. 45.51-45.55.
M. Levy "Auto Adaptive Phase Jitter and Intersymbol Interference Suppression for Data Transmission Receivers", National Telecommunication Conference, vol. II 29, Nov. 30, 1976 and Dec. 1, 1976, pp. 45.21-45.2-3.

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