CA2195453A1 - Systeme de telecommunications a spectre etale - Google Patents

Systeme de telecommunications a spectre etale

Info

Publication number
CA2195453A1
CA2195453A1 CA002195453A CA2195453A CA2195453A1 CA 2195453 A1 CA2195453 A1 CA 2195453A1 CA 002195453 A CA002195453 A CA 002195453A CA 2195453 A CA2195453 A CA 2195453A CA 2195453 A1 CA2195453 A1 CA 2195453A1
Authority
CA
Canada
Prior art keywords
pulses
frequency
interval
pulse
transmission
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.)
Abandoned
Application number
CA002195453A
Other languages
English (en)
Inventor
David L. Herrick
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.)
Individual
Original Assignee
Lockheed Martin 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 Lockheed Martin Corp filed Critical Lockheed Martin Corp
Publication of CA2195453A1 publication Critical patent/CA2195453A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

L'invention porte sur un procédé permettant d'assurer la transmission sécurisée d'impulsions radio dans des conditions atmosphériques variables en choisissant des fréquences différentes pour la transmission d'une série d'impulsions d'énergie en fonction du contenu des données numériques à transmettre, et qui détermine les choix de fréquences de transmission de l'impulsion suivante en fonction du contenu des données numériques d'au moins l'une des impulsions préalablement transmises. Ce procédé s'applique aux transmissions en bande HF, à celle de données et de télécopie, ainsi qu'aux transmissions sans fils.
CA002195453A 1995-05-19 1996-05-16 Systeme de telecommunications a spectre etale Abandoned CA2195453A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US44460895A 1995-05-19 1995-05-19
US08/444,608 1995-05-19
PCT/US1996/007023 WO1996037060A1 (fr) 1995-05-19 1996-05-16 Systeme de telecommunications a spectre etale

Publications (1)

Publication Number Publication Date
CA2195453A1 true CA2195453A1 (fr) 1996-11-21

Family

ID=23765604

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002195453A Abandoned CA2195453A1 (fr) 1995-05-19 1996-05-16 Systeme de telecommunications a spectre etale

Country Status (4)

Country Link
EP (1) EP0771495A1 (fr)
AU (1) AU5794896A (fr)
CA (1) CA2195453A1 (fr)
WO (1) WO1996037060A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20205091A1 (en) * 2020-01-29 2021-07-30 Nokia Technologies Oy Data transfer method and device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583231A (en) * 1983-11-02 1986-04-15 General Electric Company Method of, and apparatus for, frequency-hopped frequency-shift-keyed digital data communications
SE445698B (sv) * 1984-11-19 1986-07-07 Ericsson Telefon Ab L M Forfarande att reducera smalbandiga storares inverkan vid radiokommunikation mellan tva stationer, vilka utnyttjar frekvenshopp
US5412687A (en) * 1993-10-15 1995-05-02 Proxim Incorporated Digital communications equipment using differential quaternary frequency shift keying

Also Published As

Publication number Publication date
WO1996037060A1 (fr) 1996-11-21
AU5794896A (en) 1996-11-29
EP0771495A1 (fr) 1997-05-07

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 19990517