Method for the transmission of a low-rate supplementary channel

Details Method for the transmission of a low-rate supplementary channel Method for the transmission of a low-rate supplementary channel

1997-06-25

1999-11-02

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359158, H04B 1004

Patent

active

059781238

ABSTRACT:
The invention relates to a method for the transmission of a low-rate supplementary channel 24 in high-rate coherent optical transmission systems for the transmission of supplemental data 26, in particular relating to the operation, in an optical communications link, in which a user data flow 17 in the form of a phase-modulated laser lightwave is transmitted, and and wherein syncbits (synchronization bits) are scattered into the user data flow 17 by a transmitter.

REFERENCES:
patent: 5144469 (1992-09-01), Brahms et al.
patent: 5220448 (1993-06-01), Vogel et al.
P.A. Dawson et al., "TAT-8 Supervisory Subsystem", British Telecommunications Engineering, vol. 5, No. 2, pp. 153-157, Jul. 1986.
B. Wandernoth, "5 Photon/Bit Low Complexity 2 Mbit/s PSk Transmission Breadboard Experiment with Homodyne Receiver Applying Sychronization Bits and Convolutional Coding", European Conference on Optical Communication. pp. 59-62, Sept. 25-29, 1994.
N.D. Stojanovic et al., "Non-Uniform Delta Modulation for Coding of the Service Channel in Optical Systems", Int. J. Electronics, vol. 75, No. 4, pp. 601-605, 1993.
A. Kanbach et al., "ISDN Die Technik", Telekommunikation, pp. 34, 1990.

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