DocumentCode
1736195
Title
Multiservice communications plants for long tunnels
Author
Coraiola, Alessandro ; Brambilla, Giorgio
Author_Institution
SIRTI S.p.A., Milano, Italy
Volume
2
fYear
1991
Firstpage
945
Lastpage
948
Abstract
The present paper describes telecommunication plants for tunnels, which can support multiple services in a wide frequency range of VHF and UHF bands. The illustrated systems have a structure employing such techniques as "grading" and signal optical transport, in order to reduce the number of line amplifiers per unit of tunnel length and the amplifier powers.
Keywords
Communication cables; Communication system traffic; Frequency; Optical amplifiers; Optical fiber cables; Power amplifiers; Power supplies; Radiofrequency amplifiers; Repeaters; Semiconductor optical amplifiers;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicle Navigation and Information Systems Conference, 1991
Type
conf
DOI
10.1109/VNIS.1991.205839
Filename
1623703
Link To Document