CA1046669A - Methodes de communication sur spectre etale pour systeme a multiplexage de messages - Google Patents

Methodes de communication sur spectre etale pour systeme a multiplexage de messages

Info

Publication number
CA1046669A
CA1046669A CA221,820A CA221820A CA1046669A CA 1046669 A CA1046669 A CA 1046669A CA 221820 A CA221820 A CA 221820A CA 1046669 A CA1046669 A CA 1046669A
Authority
CA
Canada
Prior art keywords
carrier
transmitter
sub
additional
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.)
Expired
Application number
CA221,820A
Other languages
English (en)
Inventor
Gunnar R. Stette
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.)
Majesty Her Queen In Right Of Canada Represented By Minister Of Defence AS
Original Assignee
Majesty Her Queen In Right Of Canada Represented By Minister Of Defence AS
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 Majesty Her Queen In Right Of Canada Represented By Minister Of Defence AS filed Critical Majesty Her Queen In Right Of Canada Represented By Minister Of Defence AS
Application granted granted Critical
Publication of CA1046669A publication Critical patent/CA1046669A/fr
Expired 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
CA221,820A 1974-03-22 1975-03-11 Methodes de communication sur spectre etale pour systeme a multiplexage de messages Expired CA1046669A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7403957A NL7403957A (en) 1974-03-22 1974-03-22 Spread spectrum communication using multiple transmission and access - imparts additional modulating signal to carrier at sender producing sub carrier and code

Publications (1)

Publication Number Publication Date
CA1046669A true CA1046669A (fr) 1979-01-16

Family

ID=19821025

Family Applications (1)

Application Number Title Priority Date Filing Date
CA221,820A Expired CA1046669A (fr) 1974-03-22 1975-03-11 Methodes de communication sur spectre etale pour systeme a multiplexage de messages

Country Status (2)

Country Link
CA (1) CA1046669A (fr)
NL (1) NL7403957A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220824A (en) * 1988-07-13 1990-01-17 Philips Electronic Associated Transmission system for sending two signals simultaneously on the same communications channel
US8195188B2 (en) 1997-08-04 2012-06-05 Enovsys Llc Location reporting satellite paging system with optional blocking of location reporting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188610A (en) 1977-08-29 1980-02-12 Hydroacoustics, Inc. Method of and apparatus for the generation and transmission of signals for echolocation and other signalling purposes, such as in geophysical exploration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220824A (en) * 1988-07-13 1990-01-17 Philips Electronic Associated Transmission system for sending two signals simultaneously on the same communications channel
US5073899A (en) * 1988-07-13 1991-12-17 U.S. Philips Corporation Transmission system for sending two signals simultaneously on the same communications channel
US8195188B2 (en) 1997-08-04 2012-06-05 Enovsys Llc Location reporting satellite paging system with optional blocking of location reporting

Also Published As

Publication number Publication date
NL7403957A (en) 1975-09-24

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19960116