FR2287820A1 - Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals - Google Patents

Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals

Info

Publication number
FR2287820A1
FR2287820A1 FR7434275A FR7434275A FR2287820A1 FR 2287820 A1 FR2287820 A1 FR 2287820A1 FR 7434275 A FR7434275 A FR 7434275A FR 7434275 A FR7434275 A FR 7434275A FR 2287820 A1 FR2287820 A1 FR 2287820A1
Authority
FR
France
Prior art keywords
transmitter
receivers
signal
transmitters
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.)
Granted
Application number
FR7434275A
Other languages
French (fr)
Other versions
FR2287820B1 (en
Inventor
Louis Gaston Pierre Mirabel
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7434275A priority Critical patent/FR2287820A1/en
Priority to BR7506506*A priority patent/BR7506506A/en
Priority to JP50120849A priority patent/JPS5214305A/en
Priority to IT28066/75A priority patent/IT1043197B/en
Priority to ES441682A priority patent/ES441682A1/en
Priority to BE2054616A priority patent/BE834419R/en
Publication of FR2287820A1 publication Critical patent/FR2287820A1/en
Application granted granted Critical
Publication of FR2287820B1 publication Critical patent/FR2287820B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

A telecommunication switching equipment can interconnect a number of pairs of terminals. Each terminal is connected to a transmitter and a receiver of signals. The transmitters and the receivers are situated such that each transmitter sends to all the receivers a signal which is practically the same for each transmitter. Each transmitter can generate a pseudo-random coded signal which phase modulates the transmitted useful signal. Each receiver has a demodulator and a correlator whose local signal is phase modulated by a pseudo-random signal supplied by a generator similar to the generator of the transmitter. Each receiver can be controlled by signals such that the generator of coded signal in the transmitter and the generator in the receiver can generate similarly coded signals.
FR7434275A 1974-10-11 1974-10-11 Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals Granted FR2287820A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7434275A FR2287820A1 (en) 1974-10-11 1974-10-11 Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals
BR7506506*A BR7506506A (en) 1974-10-11 1975-10-06 ELECTRONIC SWITCHING CENTER FOR TELECOMMUNICATIONS SYSTEM
JP50120849A JPS5214305A (en) 1974-10-11 1975-10-08 Telecommunication type electronic switching station
IT28066/75A IT1043197B (en) 1974-10-11 1975-10-08 ELECTRONIC COMMUTATION CENTER FOR TELECOMMUNICATIONS SYSTEM
ES441682A ES441682A1 (en) 1974-10-11 1975-10-10 Telecommunication type electronic switching station
BE2054616A BE834419R (en) 1974-10-11 1975-10-13 SWITCHING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7434275A FR2287820A1 (en) 1974-10-11 1974-10-11 Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals

Publications (2)

Publication Number Publication Date
FR2287820A1 true FR2287820A1 (en) 1976-05-07
FR2287820B1 FR2287820B1 (en) 1979-07-06

Family

ID=9144004

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7434275A Granted FR2287820A1 (en) 1974-10-11 1974-10-11 Telecommunication switching equipment - interconnects transmitters and receivers by generating pseudo random coded signals

Country Status (6)

Country Link
JP (1) JPS5214305A (en)
BE (1) BE834419R (en)
BR (1) BR7506506A (en)
ES (1) ES441682A1 (en)
FR (1) FR2287820A1 (en)
IT (1) IT1043197B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005240A1 (en) * 1987-01-09 1988-07-14 Unvala Limited Communications systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53146787U (en) * 1977-04-23 1978-11-18
KR870004587A (en) * 1985-10-16 1987-05-11 엘리 와이스 Wireless local area network
GB9523002D0 (en) * 1995-11-09 1996-01-10 Raychem Ltd Flame-retarded adhesive composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475558A (en) * 1964-09-01 1969-10-28 Magnavox Co Time gated pseudonoise multiplexing system
GB1298471A (en) * 1967-09-15 1972-12-06 Ibm Multiplex switching systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475558A (en) * 1964-09-01 1969-10-28 Magnavox Co Time gated pseudonoise multiplexing system
GB1298471A (en) * 1967-09-15 1972-12-06 Ibm Multiplex switching systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005240A1 (en) * 1987-01-09 1988-07-14 Unvala Limited Communications systems

Also Published As

Publication number Publication date
BR7506506A (en) 1976-08-17
JPS564076B2 (en) 1981-01-28
BE834419R (en) 1976-04-13
IT1043197B (en) 1980-02-20
ES441682A1 (en) 1977-04-01
FR2287820B1 (en) 1979-07-06
JPS5214305A (en) 1977-02-03

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Legal Events

Date Code Title Description
ST Notification of lapse