JPS57129041A - Spectrum spread multiplex communcation system - Google Patents

Spectrum spread multiplex communcation system

Info

Publication number
JPS57129041A
JPS57129041A JP56014884A JP1488481A JPS57129041A JP S57129041 A JPS57129041 A JP S57129041A JP 56014884 A JP56014884 A JP 56014884A JP 1488481 A JP1488481 A JP 1488481A JP S57129041 A JPS57129041 A JP S57129041A
Authority
JP
Japan
Prior art keywords
sequence
pseudo random
generated
demodulating
data
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
JP56014884A
Other languages
Japanese (ja)
Other versions
JPS6336694B2 (en
Inventor
Satoshi Hasegawa
Botaro Hirosaki
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 JP56014884A priority Critical patent/JPS57129041A/en
Priority to US06/264,163 priority patent/US4392220A/en
Priority to AU71156/81A priority patent/AU537148B2/en
Priority to CA000378694A priority patent/CA1165476A/en
Priority to DE8181104133T priority patent/DE3172013D1/en
Priority to EP81104133A priority patent/EP0041253B1/en
Publication of JPS57129041A publication Critical patent/JPS57129041A/en
Publication of JPS6336694B2 publication Critical patent/JPS6336694B2/ja
Granted legal-status Critical Current

Links

Classifications

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To increase the number of maximum storing terminals, by assigning the product of the respective pseudo random sequences generated from plural clocks whose frequencies are different, as a demodulating pseudo random sequence. CONSTITUTION:Each aggregate L1,...Ln (sequence Lk is equal to repeated frequency of sequence Lk-1, or is generated by a clock having frequency of 1/integer) of pseudo random sequences generated by clocks whose frequencies are different is used. To information data which is dealt with by a terminal, 1 piece each is fetched from sequences L1,...Lk generated by high speed clocks from the data, and by their product, a demodulating pseudo random sequence is formed. In the receifing side, each terminal multiplies a signal received from a transmission line 466 by an output of an M sequence generator 400 by a multiplier 401, which is made to demodulating data through a signal processing circuit 403.
JP56014884A 1980-05-30 1981-02-03 Spectrum spread multiplex communcation system Granted JPS57129041A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP56014884A JPS57129041A (en) 1981-02-03 1981-02-03 Spectrum spread multiplex communcation system
US06/264,163 US4392220A (en) 1980-05-30 1981-05-15 Modem to be coupled to a directional transmission line of an SS multiplex communication network
AU71156/81A AU537148B2 (en) 1980-05-30 1981-05-29 Code division multiplex transmission
CA000378694A CA1165476A (en) 1980-05-30 1981-05-29 Modem to be coupled to a directional transmission line of an ss multiplex communication network
DE8181104133T DE3172013D1 (en) 1980-05-30 1981-05-29 Transmitter-receiver to be coupled to a directional transmission line of a spread-spectrum multiplex communication network
EP81104133A EP0041253B1 (en) 1980-05-30 1981-05-29 Transmitter-receiver to be coupled to a directional transmission line of a spread-spectrum multiplex communication network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014884A JPS57129041A (en) 1981-02-03 1981-02-03 Spectrum spread multiplex communcation system

Publications (2)

Publication Number Publication Date
JPS57129041A true JPS57129041A (en) 1982-08-10
JPS6336694B2 JPS6336694B2 (en) 1988-07-21

Family

ID=11873435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014884A Granted JPS57129041A (en) 1980-05-30 1981-02-03 Spectrum spread multiplex communcation system

Country Status (1)

Country Link
JP (1) JPS57129041A (en)

Also Published As

Publication number Publication date
JPS6336694B2 (en) 1988-07-21

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