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Test on digital transmission by carrier relay

Journal Article:

Abstract

Though the analog system was applied to the carrier relay system, together with the transmission route, owned/operated by Chugoku Electric Power, accompanying the digitalization of microwave wireless communication, the method to apply the existing analog system signal station unit, to the digital transmission route, came to be required to be discussed. In case of that application, it is feared for a false signal output to be made, with the impossibility of detecting the bit error, characteristic on the digital transmission route. Therefore, by using the microwave wireless communication between Mihara transformation station and Onomichi control station, a transmission test was made on a signal station of phase wave comparison system. As a result, it was known that the false signal output, produced at the detection width of 2ms at present, could be prevented by fixing the detection width to be 1 or 0.5ms and that the lock time ratio could not be maintained at the detection width of 0.5ms. It was further known that the detection width of 1ms only satisfied the condition, which could be secured by the modification only in timer of the bit error detection at signal station. 1 references, 6 figures, 4 tables.
Publication Date:
Sep 01, 1988
Product Type:
Journal Article
Reference Number:
NEDO-88-920485; EDB-89-108179
Resource Relation:
Journal Name: Giken Jiho; (Japan); Journal Volume: 72
Subject:
20 FOSSIL-FUELED POWER PLANTS; ANALOG SYSTEMS; SIGNALS; DIGITAL SYSTEMS; TRANSMISSION; DISTURBANCES; DETECTION; MICROWAVE EQUIPMENT; COMMUNICATIONS; RELAYS; CARRIERS; PHASE SHIFT; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EQUIPMENT; 200000* - Fossil-Fueled Power Plants
OSTI ID:
5985998
Research Organizations:
Chugoku Electric Power Co., Inc., Hiroshima (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: GIJID
Submitting Site:
NEDO
Size:
Pages: 57-62
Announcement Date:

Journal Article:

Citation Formats

Tahara, Taka, and Yasuda, Katsuhiko. Test on digital transmission by carrier relay. Japan: N. p., 1988. Web.
Tahara, Taka, & Yasuda, Katsuhiko. Test on digital transmission by carrier relay. Japan.
Tahara, Taka, and Yasuda, Katsuhiko. 1988. "Test on digital transmission by carrier relay." Japan.
@misc{etde_5985998,
title = {Test on digital transmission by carrier relay}
author = {Tahara, Taka, and Yasuda, Katsuhiko}
abstractNote = {Though the analog system was applied to the carrier relay system, together with the transmission route, owned/operated by Chugoku Electric Power, accompanying the digitalization of microwave wireless communication, the method to apply the existing analog system signal station unit, to the digital transmission route, came to be required to be discussed. In case of that application, it is feared for a false signal output to be made, with the impossibility of detecting the bit error, characteristic on the digital transmission route. Therefore, by using the microwave wireless communication between Mihara transformation station and Onomichi control station, a transmission test was made on a signal station of phase wave comparison system. As a result, it was known that the false signal output, produced at the detection width of 2ms at present, could be prevented by fixing the detection width to be 1 or 0.5ms and that the lock time ratio could not be maintained at the detection width of 0.5ms. It was further known that the detection width of 1ms only satisfied the condition, which could be secured by the modification only in timer of the bit error detection at signal station. 1 references, 6 figures, 4 tables.}
journal = {Giken Jiho; (Japan)}
volume = {72}
journal type = {AC}
place = {Japan}
year = {1988}
month = {Sep}
}