Closed loop transmission system

Details Closed loop transmission system Closed loop transmission system

H - Electricity

04

B

325/1

H04B 3/54 (2006.01) H04B 10/213 (2006.01) H04L 12/42 (2006.01)

Patent

CA 1241993

- 1 - Abstract: A signal transmission system for communication among a central station and a plurality of local stations located in towers of a power transmission line uses an optical fiber cable included in an overhead ground wire suspended on the towers between the central station and the local stations. A closed transmission loop is formed by such optical fiber cable for effecting signal trans- mission from the central station to the local stations and from the local stations to the central station. The arrangement has the advantage of enabling bidirectional communication between the central station and the local stations without the need of prior systems to increase either the number of converters or the transmission loss in the data transmission paths.

472401

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