ES479318A1 - Dispositivo para la desmodulacion de una senal. - Google Patents

Dispositivo para la desmodulacion de una senal.

Info

Publication number
ES479318A1
ES479318A1 ES479318A ES479318A ES479318A1 ES 479318 A1 ES479318 A1 ES 479318A1 ES 479318 A ES479318 A ES 479318A ES 479318 A ES479318 A ES 479318A ES 479318 A1 ES479318 A1 ES 479318A1
Authority
ES
Spain
Prior art keywords
input signal
demodulating
digital
signal
phase 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.)
Expired
Application number
ES479318A
Other languages
English (en)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Publication of ES479318A1 publication Critical patent/ES479318A1/es
Expired 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling

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)

Abstract

Dispositivo para la demodulación de una señal de entrada, teniendo esta señal de entrada y el procedimiento de modulación las particularidades citadas en la parte descriptiva de esta memoria, de lo porque comprende un primer y un segundo órganos de memorización para memorizar las dos últimas muestras numéricas recibidas de la señal de entrada y, un primer generador para proporcionar la sucesión de muestras numéricas u (n) , un primer órgano de cálculo para calcular la sucesión de las fases s(n) un segundo generador para proporcionar la sucesión de muestras numéricas v(n) , un segundo órgano de cálculo para calcular la sucesión de las fases t(n) un órgano de comparación para comparar cada muestra numérica de la señal de entrada y con la muestra numérica del mismo rango de una de las sucesiones u(n) o v(n) un primer órgano de conmutación para conmutar un terminal de salida de uno de los generadores con el terminal de salida del otro generador dependiendo del resultado de la comparación un órgano de resta para expresar la diferencia de fase entre cada término de la sucesión de las fases calculado por uno de los órganos de cálculo y el término del mismo rango de la sucesión de las fases calculada por el otro órgano de cálculo, un órgano de sustitución que contiene la ley de correspondencia previamente establecida para substituir en la diferencia de fase expresada por el órgano de resta el grupo de elementos binarios de la señal de salida z escogida para representar esta diferencia de fase según la ley de correspondencia previamente establecida.
ES479318A 1978-04-06 1979-04-05 Dispositivo para la desmodulacion de una senal. Expired ES479318A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7810190A FR2422287A1 (fr) 1978-04-06 1978-04-06 Procede et dispositif de demodulation d'un signal module en phase differentielle

Publications (1)

Publication Number Publication Date
ES479318A1 true ES479318A1 (es) 1979-12-16

Family

ID=9206760

Family Applications (1)

Application Number Title Priority Date Filing Date
ES479318A Expired ES479318A1 (es) 1978-04-06 1979-04-05 Dispositivo para la desmodulacion de una senal.

Country Status (9)

Country Link
US (1) US4242641A (es)
EP (1) EP0004822A1 (es)
AU (1) AU4581379A (es)
BR (1) BR7902092A (es)
ES (1) ES479318A1 (es)
FR (1) FR2422287A1 (es)
GR (1) GR66985B (es)
RO (1) RO76734A (es)
TR (1) TR20452A (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457005A (en) * 1981-12-07 1984-06-26 Motorola, Inc. Digital coherent PSK demodulator and detector
US4547737A (en) * 1983-07-29 1985-10-15 Rca Corporation Demodulator of sampled data FM signals from sets of four successive samples
FR2571194B1 (fr) * 1984-09-28 1992-12-11 Lignes Telegraph Telephon Demodulateur differentiel de signaux electriques a plusieurs etats de phase pour equipements de transmission de donnees
US4742533A (en) * 1987-01-02 1988-05-03 Motorola, Inc. Soft decision digital communication apparatus
FR2633470B1 (fr) * 1988-06-24 1990-08-24 Thomson Csf Procede de demodulation et demodulateur de signaux numeriques d'amplitude d'enveloppe constante modules en phase et/ou en frequence de facon continue
US5754585A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5832028A (en) * 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5648982A (en) * 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5629956A (en) * 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5953370A (en) 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5627856A (en) * 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5757847A (en) * 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5680414A (en) * 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5881100A (en) * 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5610940A (en) * 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5692007A (en) * 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5659574A (en) * 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
EP1333590A3 (en) * 1994-09-09 2004-05-12 XIRCOM Wireless, Inc. Correlator for reception of CPM spread-spectrum communications
US5963586A (en) * 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5856998A (en) * 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5754584A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580108A (es) * 1966-03-02 1969-09-05
DE2357655B2 (de) * 1973-11-19 1975-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Demodulation eines frequenzdifferenziellen phasenmodulierten Signalgemisches
US3938052A (en) * 1974-05-09 1976-02-10 Teletype Corporation Digital demodulator for phase-modulated waveforms

Also Published As

Publication number Publication date
FR2422287A1 (fr) 1979-11-02
AU4581379A (en) 1979-10-11
BR7902092A (pt) 1979-11-27
EP0004822A1 (fr) 1979-10-17
FR2422287B1 (es) 1981-11-06
RO76734A (ro) 1981-05-30
TR20452A (tr) 1981-07-14
GR66985B (es) 1981-05-15
US4242641A (en) 1980-12-30

Similar Documents

Publication Publication Date Title
ES479318A1 (es) Dispositivo para la desmodulacion de una senal.
DE2967301D1 (en) Method and arrangement for initiating an adaptive equalizer starting from an unknown data signal in a transmission system utilizing quadrature amplitude modulation
DK478488A (da) Fremgangsmaade og/eller apparat til demodulering af et bifasesignal
ES2150973T3 (es) Procedimiento y dispositivo de deteccion de perdida de recuperacion de portadora y de determinacion de la relacion eb/no de un enlace de transmision digital.
US3611143A (en) Device for the transmission of rectangular synchronous information pulses
DE2962743D1 (en) Process and apparatus for detecting a pseudo-random sequence of two symbols in a data receiver using a double sideband modulation with quadrature carriers
SE8002225L (sv) Metod och anordning for demodulering av en fyrfaskodad datasignal
GB1409681A (en) Frequency discriminator
EP0228213A3 (en) System for transmitting and receiving asynchronous nonhomogeneous variable width parallel data over a synchronous high speed serial transmission media
US3862363A (en) Pulse phase double modulation system for respectively modulating the leading and trailing edges of a carrier pulse with two different information signals
US3911219A (en) Automatic frequency control for differentially coherent phase detection
ES8101827A1 (es) Conexion para la transmision de una serie binaria para transferir datos
US4799238A (en) Differential phase shift keying method for the transmission of data
KR890009136A (ko) 로란-C(Loran-C)항해 신호 방송과 항로 오차 및 공간파 항로 위치 오차를 감소시키기 위한 메세지 교신용 장치 및 그 방법
US4348769A (en) Circuitry for extraction of a transmission clock signal from-modulated data transmissions
JPS5710554A (en) Modulation and demodulation device for frequency spread multiplex communication
SU985967A1 (ru) Цифровой когерентный частотный демодул тор
JPS5573164A (en) Synchronous demodulation system of msk signal
JPS56157150A (en) Composite digital communication system
JPS5558644A (en) Data transmission system
SU932524A1 (ru) Устройство передачи сигналов времени
JPS5711564A (en) Transmission system for burst signal
JPS5582551A (en) Echo cancel unit for two line type duplex data communication modem
SU780155A1 (ru) Цифровой частотный дискриминатор
FR2435869A1 (fr) Egaliseur numerique auto-adaptatif pour transmission de donnees en modulation d'amplitude a bande laterale unique