ES8502587A1 - Data communications system - Google Patents

Data communications system

Info

Publication number
ES8502587A1
ES8502587A1 ES524115A ES524115A ES8502587A1 ES 8502587 A1 ES8502587 A1 ES 8502587A1 ES 524115 A ES524115 A ES 524115A ES 524115 A ES524115 A ES 524115A ES 8502587 A1 ES8502587 A1 ES 8502587A1
Authority
ES
Spain
Prior art keywords
cable
message
area network
local area
communications system
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.)
Expired
Application number
ES524115A
Other languages
Spanish (es)
Other versions
ES524115A0 (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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8502587A1 publication Critical patent/ES8502587A1/en
Publication of ES524115A0 publication Critical patent/ES524115A0/en
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/005—Optical Code Multiplex

Abstract

In a digital communication system for use in a local area network, messages are conveyed over a cable, which may be an electrical cable or an optical fibre cable, using code division multiple access spread spectrum techniques. In such a system the message is modulated on to a quasi- random bit stream whose characteristics form an address for the terminal to which the message is directed. Such a system is known in specialised radio systems, but is not normally considered suitable for line communication because of inefficient use of the bandwidth. However, in a short-range local area network this disadvantage largely disappears.
ES524115A 1982-07-27 1983-07-14 DIGITAL COMMUNICATION DISTRIBUTION SYSTEM Granted ES524115A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08221648A GB2125253B (en) 1982-07-27 1982-07-27 Data communications system

Publications (2)

Publication Number Publication Date
ES8502587A1 true ES8502587A1 (en) 1984-11-16
ES524115A0 ES524115A0 (en) 1984-11-16

Family

ID=10531930

Family Applications (1)

Application Number Title Priority Date Filing Date
ES524115A Granted ES524115A0 (en) 1982-07-27 1983-07-14 DIGITAL COMMUNICATION DISTRIBUTION SYSTEM

Country Status (3)

Country Link
DE (1) DE3325569A1 (en)
ES (1) ES524115A0 (en)
GB (1) GB2125253B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703474A (en) * 1986-02-28 1987-10-27 American Telephone And Telegraph Company, At&T Bell Laboratories Spread spectrum code-division-multiple-access (SS-CDMA) lightwave communication system
DE4417954A1 (en) * 1994-05-21 1995-11-23 Sel Alcatel Ag Synchronization procedures as well as synchronization devices, terminal and switching center therefor
SE523374C2 (en) 1997-07-31 2004-04-13 Ericsson Telefon Ab L M Communication using spectrum spreading methods over optical fibers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1801999B2 (en) * 1968-10-09 1973-11-08 Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm Broadband transmission channels showing a message transmission system with a large number of participants

Also Published As

Publication number Publication date
GB2125253B (en) 1985-09-11
DE3325569A1 (en) 1984-02-02
ES524115A0 (en) 1984-11-16
GB2125253A (en) 1984-02-29

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