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JPS57193137A - Radio relaying system using leakage coaxial cable - Google Patents

Radio relaying system using leakage coaxial cable

Info

Publication number
JPS57193137A
JPS57193137A JP56078484A JP7848481A JPS57193137A JP S57193137 A JPS57193137 A JP S57193137A JP 56078484 A JP56078484 A JP 56078484A JP 7848481 A JP7848481 A JP 7848481A JP S57193137 A JPS57193137 A JP S57193137A
Authority
JP
Japan
Prior art keywords
relay
transmitter
cable
mobile station
receiver
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56078484A
Other languages
Japanese (ja)
Inventor
Sadaichi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56078484A priority Critical patent/JPS57193137A/en
Publication of JPS57193137A publication Critical patent/JPS57193137A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To extend the communication distance between mobile stations, by constituting a relay device through the connection of a receiver and a transmitter for relay to a leakage coaxial cable installed in a tunnel. CONSTITUTION:Tracks 2 and 3 are respectively provided in facing a wall at both sides of a tunnel 1 and leakage coaxial cables 5 and 6 are respectively installed along the tracks. A receiver 9 for relay receiving an operating frequency f1 of the track 2 via a distributor 8 and a transmitter 10 for relay transmitting an operating frequency f2 of the track 3 are connected to the cable 5. A receiver 13 for relay and f2 reception and a transmitter 14 for relay and a transmitter 14 for relay and f1 transmission are connected to the cable 6 via a distributor 12. The receivers 9 and 13 are connected to the transmitters 14 and 10 respectively to constitute a relay eequipment. The communication from a mobile station 16 to a mobile staiton 17 of the track 2 can be made by inputting f1 electromagnetic waves transmitted from the mobile station 16 to the receiver 9 through the cable 5, radiating the demodulated signal to the mobile station 17 through the cable 6 from the transmitter 14, and receiving the call of the mobile station 16 to the mobile station 17.
JP56078484A 1981-05-22 1981-05-22 Radio relaying system using leakage coaxial cable Pending JPS57193137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56078484A JPS57193137A (en) 1981-05-22 1981-05-22 Radio relaying system using leakage coaxial cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56078484A JPS57193137A (en) 1981-05-22 1981-05-22 Radio relaying system using leakage coaxial cable

Publications (1)

Publication Number Publication Date
JPS57193137A true JPS57193137A (en) 1982-11-27

Family

ID=13663257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56078484A Pending JPS57193137A (en) 1981-05-22 1981-05-22 Radio relaying system using leakage coaxial cable

Country Status (1)

Country Link
JP (1) JPS57193137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0801472A1 (en) * 1996-04-08 1997-10-15 Toyota Jidosha Kabushiki Kaisha Radio communication system between a vehicle and a roadside station

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627540A (en) * 1979-08-14 1981-03-17 Toyo Commun Equip Co Ltd Single-frequency special radio communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627540A (en) * 1979-08-14 1981-03-17 Toyo Commun Equip Co Ltd Single-frequency special radio communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0801472A1 (en) * 1996-04-08 1997-10-15 Toyota Jidosha Kabushiki Kaisha Radio communication system between a vehicle and a roadside station
US5983075A (en) * 1996-04-08 1999-11-09 Toyota Jidosha Kabushiki Kaisha Radio communication system between a vehicle and a roadside station

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