NO913806L - Innretning for automatisk frekvenskontroll i koherente demodulatorer for m-qam-modulasjonssystemer. - Google Patents

Innretning for automatisk frekvenskontroll i koherente demodulatorer for m-qam-modulasjonssystemer.

Info

Publication number
NO913806L
NO913806L NO91913806A NO913806A NO913806L NO 913806 L NO913806 L NO 913806L NO 91913806 A NO91913806 A NO 91913806A NO 913806 A NO913806 A NO 913806A NO 913806 L NO913806 L NO 913806L
Authority
NO
Norway
Prior art keywords
frequency control
automatic frequency
qam modulation
modulation systems
coherent demodulators
Prior art date
Application number
NO91913806A
Other languages
English (en)
Other versions
NO178319C (no
NO913806D0 (no
NO178319B (no
Inventor
Roberto Colombo
Giambattista Di Donna
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Publication of NO913806D0 publication Critical patent/NO913806D0/no
Publication of NO913806L publication Critical patent/NO913806L/no
Publication of NO178319B publication Critical patent/NO178319B/no
Publication of NO178319C publication Critical patent/NO178319C/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • H04L27/3827—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using only the demodulated baseband signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Radio Relay Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
NO913806A 1990-09-28 1991-09-27 Innretning for automatisk frekvenskontroll i koherente demodulatorer for M-QAM-modulasjonssystemer NO178319C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02160790A IT1243086B (it) 1990-09-28 1990-09-28 Dispositivo per il controllo automatico di frequenza in demodulatori coerenti, per sistemi di modulazione m-qam

Publications (4)

Publication Number Publication Date
NO913806D0 NO913806D0 (no) 1991-09-27
NO913806L true NO913806L (no) 1992-03-30
NO178319B NO178319B (no) 1995-11-20
NO178319C NO178319C (no) 1996-02-28

Family

ID=11184258

Family Applications (1)

Application Number Title Priority Date Filing Date
NO913806A NO178319C (no) 1990-09-28 1991-09-27 Innretning for automatisk frekvenskontroll i koherente demodulatorer for M-QAM-modulasjonssystemer

Country Status (7)

Country Link
EP (1) EP0478080B1 (no)
AU (1) AU647522B2 (no)
DE (1) DE69132481T2 (no)
FI (1) FI914559A (no)
IT (1) IT1243086B (no)
NO (1) NO178319C (no)
ZA (1) ZA917756B (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729033B1 (fr) * 1995-01-02 1997-04-04 Alcatel Telspace Dispositif de recuperation de porteuse pour recepteur de signaux de type maq et recepteur l'employant
US5867503A (en) * 1996-01-30 1999-02-02 Mitsubishi Denki Kabushiki Kaisha Digital sound broadcasting receiver and automatic phase controlling method therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58131813A (ja) * 1982-02-01 1983-08-05 Fujitsu Ten Ltd 車載用ラジオ受信機
JPS58221548A (ja) * 1982-06-18 1983-12-23 Fujitsu Ltd 位相同期回路
JPH0810879B2 (ja) * 1986-02-20 1996-01-31 富士通株式会社 復調装置

Also Published As

Publication number Publication date
DE69132481D1 (de) 2001-01-04
IT9021607A1 (it) 1992-03-28
ZA917756B (en) 1992-05-27
IT1243086B (it) 1994-05-23
FI914559A0 (fi) 1991-09-27
DE69132481T2 (de) 2001-07-05
AU8466091A (en) 1992-04-02
NO178319C (no) 1996-02-28
EP0478080A2 (en) 1992-04-01
FI914559A (fi) 1992-03-29
EP0478080A3 (en) 1993-02-24
AU647522B2 (en) 1994-03-24
NO913806D0 (no) 1991-09-27
NO178319B (no) 1995-11-20
IT9021607A0 (it) 1990-09-28
EP0478080B1 (en) 2000-11-29

Similar Documents

Publication Publication Date Title
EP0448832A3 (en) Automatic bias controller for electro-optic modulator
DE68918464D1 (de) Automatisches baggersteuersystem.
DE69100195T2 (de) Gerät zur Kursbestimmung.
DE231721T1 (de) Automatische verstaerkungsregelung fuer hoergeraet.
DE3887683D1 (de) Automatische Plattenaustauschvorrichtung.
FR2669999B1 (fr) Traceur automatique de surface.
FR2711868B1 (fr) Dispositif de commande automatique en fréquence.
FR2640829B1 (fr) Dispositif pour la modulation ou la demodulation directe en hyperfrequences
DK0460432T3 (da) Olieniveaustyresystem
DE69126602T2 (de) Ski mit Steifigkeitsbeeinflussungssystem
DE69100678D1 (de) Filter mit automatischer Grenzfrequenzregelung.
FR2670589B1 (fr) Dispositif de modulation electrooptique integre.
IT8024671A0 (it) Impianto per modulazione automatica.
DE69020538D1 (de) Automatische pegelregelung.
IT8919954A0 (it) Apparecchiatura di cucitura automatica.
NO913806D0 (no) Innretning for automatisk frekvenskontroll i koherente demodulatorer for m-qam-modulasjonssystemer.
DE3852441T2 (de) Automatisches Frequenzregelssystem.
FR2665964B1 (fr) Dispositif pour la commande de mines.
FR2662425B1 (fr) Dispositif de distribution.
DE69217073T2 (de) Entwasserungseinheit mit automatischer schlitzdüse
DE68907908D1 (de) Automat fuer wegwerfspritzen.
MX9102601A (es) Deteccion coherente para modulacion qpsk.
DE68914564D1 (de) Selbsttätige Phasensteuerschaltung.
ES1008134Y (es) Dispositivo de riego automatico y discontinuo.
ES1008135Y (es) Dispositivo multiple de riego automatico y discontinuo.