FR2749115B1 - Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe - Google Patents

Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe

Info

Publication number
FR2749115B1
FR2749115B1 FR9406048A FR9406048A FR2749115B1 FR 2749115 B1 FR2749115 B1 FR 2749115B1 FR 9406048 A FR9406048 A FR 9406048A FR 9406048 A FR9406048 A FR 9406048A FR 2749115 B1 FR2749115 B1 FR 2749115B1
Authority
FR
France
Prior art keywords
transmission method
information transmission
digital information
direct sequence
spectrum spread
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 - Fee Related
Application number
FR9406048A
Other languages
English (en)
Other versions
FR2749115A1 (fr
Inventor
Thierry Jean Lucidarme
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Priority to FR9406048A priority Critical patent/FR2749115B1/fr
Publication of FR2749115A1 publication Critical patent/FR2749115A1/fr
Application granted granted Critical
Publication of FR2749115B1 publication Critical patent/FR2749115B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L23/00—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
    • H04L23/02—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0074—Code shifting or hopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR9406048A 1994-05-18 1994-05-18 Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe Expired - Fee Related FR2749115B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9406048A FR2749115B1 (fr) 1994-05-18 1994-05-18 Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9406048A FR2749115B1 (fr) 1994-05-18 1994-05-18 Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe

Publications (2)

Publication Number Publication Date
FR2749115A1 FR2749115A1 (fr) 1997-11-28
FR2749115B1 true FR2749115B1 (fr) 1998-11-13

Family

ID=9463296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9406048A Expired - Fee Related FR2749115B1 (fr) 1994-05-18 1994-05-18 Procede et systeme de transmission d'informations numeriques a etalement de spectre par sequence directe

Country Status (1)

Country Link
FR (1) FR2749115B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU617885B2 (en) * 1988-10-24 1991-12-05 Nec Corporation Spectrum spread communication by csk modulation
US4930140A (en) * 1989-01-13 1990-05-29 Agilis Corporation Code division multiplex system using selectable length spreading code sequences
US5138569A (en) * 1989-12-18 1992-08-11 Codex Corporation Dual tone multi-frequency detector

Also Published As

Publication number Publication date
FR2749115A1 (fr) 1997-11-28

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse