WO2017208446A1 - Système de communication - Google Patents

Système de communication Download PDF

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Publication number
WO2017208446A1
WO2017208446A1 PCT/JP2016/066632 JP2016066632W WO2017208446A1 WO 2017208446 A1 WO2017208446 A1 WO 2017208446A1 JP 2016066632 W JP2016066632 W JP 2016066632W WO 2017208446 A1 WO2017208446 A1 WO 2017208446A1
Authority
WO
WIPO (PCT)
Prior art keywords
mode
transmission
unit
test signal
loss amount
Prior art date
Application number
PCT/JP2016/066632
Other languages
English (en)
Japanese (ja)
Inventor
佑紀 岡南
慶洋 明星
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/066632 priority Critical patent/WO2017208446A1/fr
Publication of WO2017208446A1 publication Critical patent/WO2017208446A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/48—Testing attenuation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/50—Systems for transmission between fixed stations via two-conductor transmission lines

Definitions

  • the two voltage value data are sent to the loss measuring unit 11a.
  • the loss amount measuring unit 11a the loss amount of the transmission cable 2a at two different frequencies is differentially determined from the ratio between the voltage value data that has passed through the transmission cable 2a and the amplitude value of the transmission voltage of the test signal that has been previously determined. It calculates in each in-phase mode (step ST4). However, the calculated loss amounts in the differential and in-phase modes can be calculated more accurately if there are three or more test signals having different frequencies.
  • the communication system it is possible to adjust the gains of the differential and in-phase amplifiers of the mode selection units 30a and 30b in accordance with the deterioration state of the frequency characteristics of the transmission cables 2a and 2b.
  • the aging degradations 53a and 53b are smaller in the in-phase mode than in the differential mode. Therefore, in order to compensate for the loss amount in each of the differential and common-mode modes, it is necessary to obtain a gain corresponding to each reduction rate.
  • the gain switching unit has an amplification factor that compensates for the loss amount of the transmission cable in each transmission mode, and thus reliably compensates for aging of the transmission cable. be able to.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Selon l'invention, une unité de sélection de mode (30a, 30b) sélectionne, en tant que mode d'émission d'un signal par l'intermédiaire d'un câble d'émission (2a, 2b), un mode différentiel et un mode de phase commune, et amplifie le signal dans chaque mode. Une unité de mesure de quantité de perte (11a, 11b) détecte une quantité de perte pour chaque mode d'émission dans le câble d'émission (2a, 2b) à partir d'une valeur lorsqu'un signal de test est reçu par un dispositif homologue. Une unité de commutation de gain règle un taux d'amplification pour chaque mode d'émission dans l'unité de sélection de mode (30a, 30b) à partir de la quantité de perte calculée par l'unité de mesure de quantité de perte (11a, 11b).
PCT/JP2016/066632 2016-06-03 2016-06-03 Système de communication WO2017208446A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/066632 WO2017208446A1 (fr) 2016-06-03 2016-06-03 Système de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/066632 WO2017208446A1 (fr) 2016-06-03 2016-06-03 Système de communication

Publications (1)

Publication Number Publication Date
WO2017208446A1 true WO2017208446A1 (fr) 2017-12-07

Family

ID=60478132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/066632 WO2017208446A1 (fr) 2016-06-03 2016-06-03 Système de communication

Country Status (1)

Country Link
WO (1) WO2017208446A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020061624A (ja) * 2018-10-09 2020-04-16 東日本電信電話株式会社 信号送信装置及び判定装置
WO2022003757A1 (fr) * 2020-06-29 2022-01-06 日本電気株式会社 Dispositif de traitement d'informations, système de traitement d'informations, procédé de traitement d'informations et programme

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05244037A (ja) * 1992-02-28 1993-09-21 Nec Corp 伝送信号送受信機及び送受信等化回路
EP2538567A1 (fr) * 2011-06-20 2012-12-26 Alcatel Lucent Dispositif de couplage avec une transmission de données via un mode fantôme

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05244037A (ja) * 1992-02-28 1993-09-21 Nec Corp 伝送信号送受信機及び送受信等化回路
EP2538567A1 (fr) * 2011-06-20 2012-12-26 Alcatel Lucent Dispositif de couplage avec une transmission de données via un mode fantôme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHINJI TSUZUKI ET AL.: "Attenuation Characteristic Modeling of Power -line Channel in Cargo Ships", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN C, vol. 130, no. 8, 1 August 2010 (2010-08-01), pages 1337 - 1342, ISSN: 0385-4221 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020061624A (ja) * 2018-10-09 2020-04-16 東日本電信電話株式会社 信号送信装置及び判定装置
WO2022003757A1 (fr) * 2020-06-29 2022-01-06 日本電気株式会社 Dispositif de traitement d'informations, système de traitement d'informations, procédé de traitement d'informations et programme
JP7414141B2 (ja) 2020-06-29 2024-01-16 日本電気株式会社 情報処理装置、情報処理システム、情報処理方法及びプログラム

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