FR2394921A1 - Modulateur a quatre phases a sauts decales - Google Patents

Modulateur a quatre phases a sauts decales

Info

Publication number
FR2394921A1
FR2394921A1 FR7718770A FR7718770A FR2394921A1 FR 2394921 A1 FR2394921 A1 FR 2394921A1 FR 7718770 A FR7718770 A FR 7718770A FR 7718770 A FR7718770 A FR 7718770A FR 2394921 A1 FR2394921 A1 FR 2394921A1
Authority
FR
France
Prior art keywords
bit stream
phase jump
phase
shift modulator
shift
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
FR7718770A
Other languages
English (en)
Other versions
FR2394921B1 (fr
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
Individual
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 Individual filed Critical Individual
Priority to FR7718770A priority Critical patent/FR2394921A1/fr
Priority to IT83380/78A priority patent/IT1104953B/it
Priority to DE19782822637 priority patent/DE2822637A1/de
Priority to GB26073/78A priority patent/GB1603938A/en
Priority to US05/912,513 priority patent/US4210879A/en
Priority to JP7044078A priority patent/JPS545647A/ja
Publication of FR2394921A1 publication Critical patent/FR2394921A1/fr
Application granted granted Critical
Publication of FR2394921B1 publication Critical patent/FR2394921B1/fr
Granted 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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2078—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the phase change per symbol period is constrained

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Le modulateur de trains d'éléments binaires permet de réaliser une modulation à quatre phases à sauts décalés à codage par transition. Il comprend un oscillateur commandé en tension pour engendrer l'onde porteuse dont la fréquence est modulée par des impulsions positives ou négatives plus courtes qu'un élément binaire pour déphaser la porteuse de + 90 degrés ou - 90 degrés par chaque impulsion. Les impulsions sont produites par codage particulier du train des éléments binaires. Utilisable dans les liaisons hyperfréquences.
FR7718770A 1977-06-13 1977-06-13 Modulateur a quatre phases a sauts decales Granted FR2394921A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7718770A FR2394921A1 (fr) 1977-06-13 1977-06-13 Modulateur a quatre phases a sauts decales
IT83380/78A IT1104953B (it) 1977-06-13 1978-05-11 Modulatore a quattro fasi a salti differenziati
DE19782822637 DE2822637A1 (de) 1977-06-13 1978-05-24 Vierphasenmodulator mit gestaffelten bzw. versetzten spruengen
GB26073/78A GB1603938A (en) 1977-06-13 1978-05-31 Four phase staggered shift modulator
US05/912,513 US4210879A (en) 1977-06-13 1978-06-05 Four-phase staggered shift keying modulator system
JP7044078A JPS545647A (en) 1977-06-13 1978-06-13 44phase statter phase shift keying modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7718770A FR2394921A1 (fr) 1977-06-13 1977-06-13 Modulateur a quatre phases a sauts decales

Publications (2)

Publication Number Publication Date
FR2394921A1 true FR2394921A1 (fr) 1979-01-12
FR2394921B1 FR2394921B1 (fr) 1980-08-22

Family

ID=9192270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7718770A Granted FR2394921A1 (fr) 1977-06-13 1977-06-13 Modulateur a quatre phases a sauts decales

Country Status (6)

Country Link
US (1) US4210879A (fr)
JP (1) JPS545647A (fr)
DE (1) DE2822637A1 (fr)
FR (1) FR2394921A1 (fr)
GB (1) GB1603938A (fr)
IT (1) IT1104953B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469062A1 (fr) * 1979-10-31 1981-05-08 Bailly Roland Modulateur par deplacement de phase a quatre etats
FR2469063A1 (fr) * 1979-10-31 1981-05-08 Brossard Pierre Modulations binaires a deplacement de phase et modulateurs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4575858A (en) * 1984-04-17 1986-03-11 Dow Joanne B PSK modulation by temporarily increasing frequency to achieve phase change
JPS62265836A (ja) * 1986-05-13 1987-11-18 Fumio Ikegami デイジタル通信方式
EP0408810B1 (fr) * 1989-07-20 1996-03-20 Kabushiki Kaisha Toshiba Système ordinateur multiprocesseur
JPH0737565U (ja) * 1992-08-28 1995-07-11 千代田株式会社 研摩布
JPH09300227A (ja) * 1996-05-09 1997-11-25 Soft Kyukyu Corp:Kk コンパウンド塗布具
US6026117A (en) 1997-10-23 2000-02-15 Interdigital Technology Corporation Method and apparatus for generating complex four-phase sequences for a CDMA communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272025A (fr) * 1960-12-19
US3393380A (en) * 1966-03-15 1968-07-16 James E. Webb Phase locked phase modulator including a voltage controlled oscillator
CH600706A5 (fr) * 1976-09-28 1978-06-30 Patelhold Patentverwertung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469062A1 (fr) * 1979-10-31 1981-05-08 Bailly Roland Modulateur par deplacement de phase a quatre etats
FR2469063A1 (fr) * 1979-10-31 1981-05-08 Brossard Pierre Modulations binaires a deplacement de phase et modulateurs
EP0032325A1 (fr) * 1979-10-31 1981-07-22 Pierre Claude Brossard Modulations binaires à déplacement de phase et modulateurs

Also Published As

Publication number Publication date
JPS6135743B2 (fr) 1986-08-14
US4210879A (en) 1980-07-01
JPS545647A (en) 1979-01-17
GB1603938A (en) 1981-12-02
DE2822637A1 (de) 1978-12-21
IT1104953B (it) 1985-10-28
FR2394921B1 (fr) 1980-08-22
IT7883380A0 (it) 1978-05-11

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Legal Events

Date Code Title Description
ST Notification of lapse