FR2345865A1 - Procede et appareils pour les radiocommunications et/ou les radiosignalisations en milieux clos - Google Patents

Procede et appareils pour les radiocommunications et/ou les radiosignalisations en milieux clos

Info

Publication number
FR2345865A1
FR2345865A1 FR7708522A FR7708522A FR2345865A1 FR 2345865 A1 FR2345865 A1 FR 2345865A1 FR 7708522 A FR7708522 A FR 7708522A FR 7708522 A FR7708522 A FR 7708522A FR 2345865 A1 FR2345865 A1 FR 2345865A1
Authority
FR
France
Prior art keywords
radiocommunications
radio signals
radio
closed areas
signals
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.)
Withdrawn
Application number
FR7708522A
Other languages
English (en)
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.)
SINA SpA
Original Assignee
SINA SpA
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 SINA SpA filed Critical SINA SpA
Publication of FR2345865A1 publication Critical patent/FR2345865A1/fr
Withdrawn legal-status Critical Current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)
  • Mobile Radio Communication Systems (AREA)
FR7708522A 1976-03-22 1977-03-22 Procede et appareils pour les radiocommunications et/ou les radiosignalisations en milieux clos Withdrawn FR2345865A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT09381/76A IT1070376B (it) 1976-03-22 1976-03-22 Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza

Publications (1)

Publication Number Publication Date
FR2345865A1 true FR2345865A1 (fr) 1977-10-21

Family

ID=11129275

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708522A Withdrawn FR2345865A1 (fr) 1976-03-22 1977-03-22 Procede et appareils pour les radiocommunications et/ou les radiosignalisations en milieux clos

Country Status (4)

Country Link
CH (1) CH615306A5 (fr)
DE (1) DE2712498A1 (fr)
FR (1) FR2345865A1 (fr)
IT (1) IT1070376B (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5627879A (en) * 1992-09-17 1997-05-06 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
US6112086A (en) * 1997-02-25 2000-08-29 Adc Telecommunications, Inc. Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units
US7103377B2 (en) 2002-12-03 2006-09-05 Adc Telecommunications, Inc. Small signal threshold and proportional gain distributed digital communications
US7171244B2 (en) 2002-12-03 2007-01-30 Adc Telecommunications, Inc. Communication system and method with gain control for signals from distributed antennas
US7962111B2 (en) 2002-02-25 2011-06-14 ADC Wireless, Inc. Distributed automatic gain control system
US8583100B2 (en) 2007-01-25 2013-11-12 Adc Telecommunications, Inc. Distributed remote base station system
US8737454B2 (en) 2007-01-25 2014-05-27 Adc Telecommunications, Inc. Modular wireless communications platform
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
US9001811B2 (en) 2009-05-19 2015-04-07 Adc Telecommunications, Inc. Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes
US9577922B2 (en) 2014-02-18 2017-02-21 Commscope Technologies Llc Selectively combining uplink signals in distributed antenna systems
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller
US10498434B2 (en) 2000-07-19 2019-12-03 CommScope Technolgies LLC Point-to-multipoint digital radio frequency transport

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907733A1 (de) * 1989-03-10 1990-09-20 Bergwerksverband Gmbh Verfahren und einrichtung zur funkuebertragung in untertaegigen grubenbauen ohne wellenleiter
DE3910944C1 (en) * 1989-04-05 1991-01-17 Siebert, Gerhard, 3200 Hildesheim, De Arrangement for setting up radio traffic between mobile stations in underground mining
DE3942320A1 (de) * 1989-10-10 1991-04-11 Wk Elektronik Gmbh Anordnung zur kommunikation in einem bergwerk, insbesondere in einem salzbergwerk
DE4335345A1 (de) * 1993-10-16 1995-04-20 Sel Alcatel Ag Funkfeststation und Antennenanordnung zur Funkversorgung eines Tunnels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517315A (en) * 1967-06-21 1970-06-23 Itt Mobile telephone transmitter selector circuit
DD108017A1 (fr) * 1973-10-29 1974-08-20
GB1485156A (en) * 1974-08-07 1977-09-08 Coal Ind Radiating line telecommunication systems

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE43964E1 (en) 1992-09-17 2013-02-05 Adc Telecommunications, Inc. Cellular communications system with sectorization
US5642405A (en) * 1992-09-17 1997-06-24 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
US5657374A (en) * 1992-09-17 1997-08-12 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
US5852651A (en) * 1992-09-17 1998-12-22 Adc Telecommunications, Inc. Cellular communications system with sectorization
US5627879A (en) * 1992-09-17 1997-05-06 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
USRE40564E1 (en) 1992-09-17 2008-11-04 Adc Telecommunications, Inc. Cellular communications system with sectorization
USRE45321E1 (en) 1992-09-17 2015-01-06 Adc Telecommunications, Inc. Cellular communications system with sectorization
US6112086A (en) * 1997-02-25 2000-08-29 Adc Telecommunications, Inc. Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units
US6836660B1 (en) 1997-02-25 2004-12-28 Adc Tolocommunications, Inc. And Adc Mobile Systems, Inc. Methods and systems for communicating in a cellular network
US10505635B2 (en) 2000-07-19 2019-12-10 Commscope Technologies Llc Point-to-multipoint digital radio frequency transport
US10498434B2 (en) 2000-07-19 2019-12-03 CommScope Technolgies LLC Point-to-multipoint digital radio frequency transport
US7962111B2 (en) 2002-02-25 2011-06-14 ADC Wireless, Inc. Distributed automatic gain control system
US7103377B2 (en) 2002-12-03 2006-09-05 Adc Telecommunications, Inc. Small signal threshold and proportional gain distributed digital communications
US7539509B2 (en) 2002-12-03 2009-05-26 Adc Telecommunications, Inc. Small signal threshold and proportional gain distributed digital communications
USRE49377E1 (en) 2002-12-03 2023-01-17 Commscope Technologies Llc Distributed digital antenna system
US7917177B2 (en) 2002-12-03 2011-03-29 Adc Telecommunications, Inc. Communication system and method with gain control for signals from distributed antennas
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
US7171244B2 (en) 2002-12-03 2007-01-30 Adc Telecommunications, Inc. Communication system and method with gain control for signals from distributed antennas
US9585193B2 (en) 2007-01-25 2017-02-28 Commscope Technologies Llc Modular wireless communications platform
US8583100B2 (en) 2007-01-25 2013-11-12 Adc Telecommunications, Inc. Distributed remote base station system
US9941921B2 (en) 2007-01-25 2018-04-10 Commscope Technologies Llc Modular wireless communications platform
US10554242B2 (en) 2007-01-25 2020-02-04 Commscope Technologies Llc Modular wireless communications platform
US8737454B2 (en) 2007-01-25 2014-05-27 Adc Telecommunications, Inc. Modular wireless communications platform
US9001811B2 (en) 2009-05-19 2015-04-07 Adc Telecommunications, Inc. Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes
US10291295B2 (en) 2014-02-18 2019-05-14 Commscope Technologies Llc Selectively combining uplink signals in distributed antenna systems
US9577922B2 (en) 2014-02-18 2017-02-21 Commscope Technologies Llc Selectively combining uplink signals in distributed antenna systems
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller

Also Published As

Publication number Publication date
DE2712498A1 (de) 1978-01-12
IT1070376B (it) 1985-03-29
CH615306A5 (en) 1980-01-15

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Legal Events

Date Code Title Description
ST Notification of lapse