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Digital VHF-electronics for a broadband communication system

: Meisenburg, R.; Radlbeck, W.

Institute of Electrical and Electronics Engineers -IEEE-:
NTC '80. IEEE 1980 National Telecommunications Conference : Houston, TX, USA, 30 Nov-4 Dec 1980
New York, NY: IEEE, 1980
National Telecommunications Conference (NTC) <1980, Houston/Tex.>
Conference Paper
Fraunhofer HHI ()
digital communication systems; optical communication; vhf-electronics; broadband communication system; digital transmission; fibre optics; central clock; optical communications; tdm frame generator

With the improvement of lasers and optical fibres increasing transmission rates become available for communication systems, providing digital transmission of data, speech and video signals. A service-integrated, digital broadband communication system with fibre optics and transmission rates of up to 560 Mbit/s is going to be implemented at the Heinrich-Hertz-Institut. The handling of such high data rates implies special designed high-speed (VHF-) digital hardware. Propagation velocity and propagation delay, termination, reflections and crosstalk are some of the primarily analog problems which arise for the digital design engineer. By means of two VHF-components, the central clock and time-division multiplex (TDM) frame generator, which is a hardwired, highly reliable equipment, and a microprogrammable TDM-frame converter for TDM frame adaptation between different hierarchical levels, the various problems and their solutions will be discussed.