AR241213A1 - Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam - Google Patents

Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam

Info

Publication number
AR241213A1
AR241213A1 AR86305516A AR30551686A AR241213A1 AR 241213 A1 AR241213 A1 AR 241213A1 AR 86305516 A AR86305516 A AR 86305516A AR 30551686 A AR30551686 A AR 30551686A AR 241213 A1 AR241213 A1 AR 241213A1
Authority
AR
Argentina
Prior art keywords
circuit
switch
surveillance
carrier recovery
qam signal
Prior art date
Application number
AR86305516A
Other languages
English (en)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AR241213A1 publication Critical patent/AR241213A1/es

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

CIRCUITO DE ENGANCHE PARA IMPEDIR ESTADOS INADMISIBLES DE ENGANCHE EN LA RECUPERACION DE PORTADORA A PARTIR DE UNA SENAL QAM, COMPUESTO POR UN CICUITO DEMODULADOR DE UNA DISPOSICION DE RADIOENLACE DIGITAL, CONSTITUIDO POR UN DEMODULADOR Y UN CIRCUITO DE RECUPERACION DE PULSOS DE RELOJ CON UN OSCILADOR CONTROLADO POR TENSION (VCO) Y UN GENERADOR DE TENSION DE REGULACION, AL CIRCUITO DEMODULADOR ESTA CONECTADO POR SU ENTRADA UN CIRCUITO DE VIGILANCIA DE NIVEL DE ENTRADA Y POR SU SALIDA UN CIRCUITO DE VIGILANCIA PARA EL REGIMEN DE ERRORES DE BITIO, ESTANDO EL CIRCUITO DE VIGILANCIA CONECTADO A UN CIRCUITO LOGICO DE CONTROL DE UN PRIMER INTERRUPTOR. EL CIRCUITO LOGICO ESTA CONECTADO A UN SEGUNDO INTERRUPTOR CONTROLADO POR EL CIRCUITO DE VIGILANCIA DE ERRORES DE BITIO. ELSEGUNDO INTERRUPTOR ESTA INTERCALADO ENTRE EL OSCILADOR CONTROLADO POR TENSION Y UN OSCILADOR DE MODULACION, ESTANDO INTERCALADO EL PRIMER INTERRUPTOR ENTRE EL CIRCUITO LOGICO Y EL GENERADOR DETENSION DE REGULACION.Ñ
AR86305516A 1985-10-25 1986-10-08 Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam AR241213A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3538032 1985-10-25

Publications (1)

Publication Number Publication Date
AR241213A1 true AR241213A1 (es) 1992-01-31

Family

ID=6284471

Family Applications (1)

Application Number Title Priority Date Filing Date
AR86305516A AR241213A1 (es) 1985-10-25 1986-10-08 Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam

Country Status (9)

Country Link
EP (1) EP0219863B1 (es)
JP (1) JPS62102648A (es)
AR (1) AR241213A1 (es)
AT (1) ATE71481T1 (es)
AU (1) AU569199B2 (es)
BR (1) BR8605201A (es)
DE (1) DE3683346D1 (es)
FI (1) FI85927C (es)
MX (1) MX161448A (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810879B2 (ja) * 1986-02-20 1996-01-31 富士通株式会社 復調装置
EP0257625B1 (de) * 1986-08-28 1991-12-27 Siemens Aktiengesellschaft Fangschaltung für die Trägerrückgewinnung aus einem QAM-Signal
JPH0626353B2 (ja) * 1987-05-19 1994-04-06 日本電気株式会社 復調装置
US5005998A (en) * 1987-11-06 1991-04-09 Victor Company Of Japan, Ltd. Cartridge for a printer system
JPH04105974A (ja) * 1990-08-24 1992-04-07 Sony Corp 記録装置
DE4216156C1 (es) * 1992-05-15 1993-08-19 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
JPH0721444U (ja) * 1993-09-29 1995-04-18 株式会社芋谷工業 自動車の座席シ−ト用テ−ブル付き収納ケ−ス
GB2303278B (en) * 1995-07-11 2000-04-26 Remo Giovanni Andrea Marzolini Improvements to demodulation systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU538047B2 (en) * 1980-08-29 1984-07-26 Plessey Overseas Ltd. Zero-crossing threshold comparator
JPS58221548A (ja) * 1982-06-18 1983-12-23 Fujitsu Ltd 位相同期回路
JPS613553A (ja) * 1984-06-15 1986-01-09 Fujitsu Ltd 搬送波再生回路

Also Published As

Publication number Publication date
AU6436586A (en) 1987-05-28
EP0219863B1 (de) 1992-01-08
DE3683346D1 (de) 1992-02-20
AU569199B2 (en) 1988-01-21
FI85927C (fi) 1992-06-10
JPH0225309B2 (es) 1990-06-01
EP0219863A3 (en) 1989-03-01
FI864317A0 (fi) 1986-10-24
MX161448A (es) 1990-09-27
FI864317A (fi) 1987-04-26
FI85927B (fi) 1992-02-28
ATE71481T1 (de) 1992-01-15
EP0219863A2 (de) 1987-04-29
BR8605201A (pt) 1987-07-28
JPS62102648A (ja) 1987-05-13

Similar Documents

Publication Publication Date Title
EP0124332A3 (en) A double conversion tuner
AR241213A1 (es) Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam
DE3751188D1 (de) NRZ-Phasenregelschleifenschaltung mit Monitor und Erholschaltungen dafür.
GB1408763A (en) Lamp failure sensing mechaism for navigational light
ES2095576T3 (es) Modulador m-ario de transmision por desplazamiento de frecuencia (fsk).
EP0608151A3 (en) Charge pump circuit with high speed and little drift.
JPS57208733A (en) Preventing circuit for malfunction
ES2098265T3 (es) Oscilador de control de voltaje con control automatico de corriente.
DE3465859D1 (en) Electronic switch
JPS55161435A (en) Coherent frequency diversity receiving system
KR880014744A (ko) 위상 고정 루프
JPS5590139A (en) Substrate bias generating circuit
JPS54101203A (en) Repeater for data transmission
JPS5499931A (en) Controller for inverters
JPS6441522A (en) Phase locked loop circuit
DE3775494D1 (de) Fangschaltung fuer die traegerrueckgewinnung aus einem qam-signal.
JPS5635561A (en) Carrier regenerating device
JPS52103933A (en) Trouble-shooter of redundancy logic circuit
JPS5567818A (en) Microcomputer system
JPS56149827A (en) 90 phase difference signal generating circuit
JPS5382070A (en) Discharge lamp lighting apparatus
ES8503180A1 (es) Un corrector de impulsos
JPS6464428A (en) Modulating and demodulating device with multiplexing function
FR2339291A1 (fr) Procede de transmission d'informations numeriques par modulation de phase d'une onde porteuse
JPS5347930A (en) Self-excited inverter controller