Synchronizing device for the receiver clock of a data transmissi

Details Synchronizing device for the receiver clock of a data transmissi Synchronizing device for the receiver clock of a data transmissi

1977-07-05

1979-01-30

Griffin, Robert L.

Telegraphy

Systems

Line-clearing and circuit maintenance

328155, H04L 700

Patent

active

041374274

ABSTRACT:
This invention relates to a new clock synchronizing arrangement for use in the receiving device of a data transmission system employing PSK modulation.
In PSK systems, the received signal x(t), for a given carrier angular frequency .omega..sub.c can be defined by its envelope and its phase r (t) and .phi.(t), respectively. r(t) and .phi.(t) can be expressed by:

REFERENCES:
patent: 3825737 (1974-07-01), Croisier
patent: 4039748 (1977-08-01), Caron et al.
Bennett, W.R. and Davey, S.R., Data Transmission, New York, McGraw-Hill, 1965, Chapter 10.
Principles of Data Communications, Lucky, et al., McGraw-Hill, 1968, Chapter 9.
"The Cordic Trigonometric Computing Technique" IRE Transactions on Electronic Computers, Sept. 1959, pp. 330-334.

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