JPS5630388A - Subscriber's-line communication system - Google Patents

Subscriber's-line communication system

Info

Publication number
JPS5630388A
JPS5630388A JP10576579A JP10576579A JPS5630388A JP S5630388 A JPS5630388 A JP S5630388A JP 10576579 A JP10576579 A JP 10576579A JP 10576579 A JP10576579 A JP 10576579A JP S5630388 A JPS5630388 A JP S5630388A
Authority
JP
Japan
Prior art keywords
code
band
terminals
terminal
party
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
JP10576579A
Other languages
Japanese (ja)
Inventor
Mitsuaki Ishitobi
Haruo Ogiwara
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10576579A priority Critical patent/JPS5630388A/en
Publication of JPS5630388A publication Critical patent/JPS5630388A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/025—Time division multiplex systems, e.g. loop systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To increase channel capacity by alloting codes to many terminals, equipped to a common transmission line individually, by diffusing the frequency spectra of information to be sent in a broad frequency band, and by sharing this band among different kinds of communication at the same time. CONSTITUTION:Common transmission lines 5 and 6 are up and down buses and to terminals EU-A, EU-B... connected to them, codes which are small in correlation and composed of a PN code or orthogonal code and constant weight code are allotted. For communication between terminals A and B, code pattern constitution unit 12 of terminal A generates the code pattern of terminal B and sends it to code generator 3. The party-side code pattern is generated by generator by a synchronizing signal from synchronizer 18 and by this code, the spectrum diffusing modulation of DS and FH as to a signal from A-D converter 2 is performed by modulator 4. Then, the signal transmitted from switch 17 to transmission line 5 is diffused in a broad band more than 10<2> times the band of information 1 and transmitted together with signals from many terminals. At the party-side terminal, correlation detector 7 receives them correlating.
JP10576579A 1979-08-20 1979-08-20 Subscriber's-line communication system Pending JPS5630388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10576579A JPS5630388A (en) 1979-08-20 1979-08-20 Subscriber's-line communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10576579A JPS5630388A (en) 1979-08-20 1979-08-20 Subscriber's-line communication system

Publications (1)

Publication Number Publication Date
JPS5630388A true JPS5630388A (en) 1981-03-26

Family

ID=14416278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10576579A Pending JPS5630388A (en) 1979-08-20 1979-08-20 Subscriber's-line communication system

Country Status (1)

Country Link
JP (1) JPS5630388A (en)

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