ES2009068A6 - Metodo para la demodulacion incoherente de una portadora de senales de dsss codificadas ortogonales. - Google Patents

Metodo para la demodulacion incoherente de una portadora de senales de dsss codificadas ortogonales.

Info

Publication number
ES2009068A6
ES2009068A6 ES8803165A ES8803165A ES2009068A6 ES 2009068 A6 ES2009068 A6 ES 2009068A6 ES 8803165 A ES8803165 A ES 8803165A ES 8803165 A ES8803165 A ES 8803165A ES 2009068 A6 ES2009068 A6 ES 2009068A6
Authority
ES
Spain
Prior art keywords
carrier
signal
signals
orthogonally coded
incoherent demodulation
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
ES8803165A
Other languages
English (en)
Inventor
Terje Thorvaldsen
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.)
Forsvarets Forskningsinstitutt
Forsvarets Forskningsanstalt (FOA)
Original Assignee
Forsvarets Forskningsinstitutt
Forsvarets Forskningsanstalt (FOA)
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 Forsvarets Forskningsinstitutt, Forsvarets Forskningsanstalt (FOA) filed Critical Forsvarets Forskningsinstitutt
Publication of ES2009068A6 publication Critical patent/ES2009068A6/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
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • 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
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
  • Circuits Of Receivers In General (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

UN METODO PARA LA DEMODULACION INCOHERENTE DE UNA PORTADORA DE SEÑALES DE DSSS CODIFICADAS ORTOGONALMENTE. LA INVENCION SE REFIERE A UN METODO PARA LA DEMODULACION INCOHERENTE DE SEÑALES DE DSSS CODIFICADAS ORTOGONALMENTE, MODULADAS CON MSK O TIPOS DE MODULACION SIMILARES. LAS SEÑALES DE INFORMACION SE RECUPERAN DIVIDIENDO LA SEÑAL RECIBIDA EN DOS PARTES DONDE LA PORTADORA SE CONVIERTE EN SENTIDO DESCENDENTE EN BANDA DE BASE POR UNA SEÑAL (S12, S22) QUE NO ESTA ADAPTADA A LA FASE DE LA PORTADORA, DESPUES DE LO CUAL LAS SEÑALES CONVERTIDAS EN SENTIDOS DESCENDENTES LLEGAN A UN CORRELADOR (13, 14), A UNOS DISPOSITIVOS DE CUADRATURA (15, 16) Y A UNOS DISPOSITIVOS SUMADORES (17, 18) Y FINALMENTE A UN DISCRIMINADOR (19) QUE ELIGE SIEMPRE LA CRESTA DE CORRELACION MAS ELEVADA COMO SEÑAL DE SALIDA (S30).
ES8803165A 1987-10-19 1988-10-19 Metodo para la demodulacion incoherente de una portadora de senales de dsss codificadas ortogonales. Expired ES2009068A6 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO874342A NO163800C (no) 1987-10-19 1987-10-19 Fremgangsmaate for demodulering av data.

Publications (1)

Publication Number Publication Date
ES2009068A6 true ES2009068A6 (es) 1989-08-16

Family

ID=19890318

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8803165A Expired ES2009068A6 (es) 1987-10-19 1988-10-19 Metodo para la demodulacion incoherente de una portadora de senales de dsss codificadas ortogonales.

Country Status (11)

Country Link
US (1) US4995052A (es)
EP (1) EP0386029B1 (es)
CA (1) CA1299658C (es)
DE (1) DE3888845T2 (es)
DK (1) DK167085B1 (es)
ES (1) ES2009068A6 (es)
IL (1) IL87868A (es)
NO (1) NO163800C (es)
PT (1) PT88784B (es)
TR (1) TR25668A (es)
WO (1) WO1989004095A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2060536A1 (es) * 1992-11-30 1994-11-16 Alcatel Standard Electrica Sintetizador de frecuencias.

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5093846A (en) * 1990-06-15 1992-03-03 Sundstrand Data Control, Inc. Signal acquisition using modulation by a preselected code group
GB9019487D0 (en) * 1990-09-06 1990-10-24 Ncr Co Carrier detection for a wireless local area network
GB9019491D0 (en) * 1990-09-06 1990-10-24 Ncr Co Clock recovery for a wireless local area network station
US5117441A (en) * 1991-02-25 1992-05-26 Motorola, Inc. Method and apparatus for real-time demodulation of a GMSK signal by a non-coherent receiver
US5434893A (en) * 1992-12-22 1995-07-18 Commissariat Energie Atomique Component for a differential transmitter-receiver of signals with direct sequence spread spectrum and the corresponding transmitter-receiver
FR2709029B1 (fr) * 1993-08-13 1995-10-20 Matra Communication Procédé de transmission pour des radio communications AMRC et dispositifs pour sa mise en Óoeuvre.
US5418489A (en) * 1993-10-08 1995-05-23 Motorola, Inc. Method of recovering a frequency modulated signal
US5592506A (en) * 1994-10-17 1997-01-07 Cylink Corporation MSK spread-spectrum receiver which allows CDMA operations
US5687190A (en) * 1995-10-20 1997-11-11 Otc Telecom Non-coherent direct sequence spread spectrum receiver for detecting bit/symbol chip sequences using threshold comparisons of chip sequence correlations
US6038271A (en) * 1999-03-02 2000-03-14 Harris Corporation Correlator with cascade data paths to facilitate expansion of correlator length
US6493405B1 (en) 1999-03-02 2002-12-10 Harris Corporation Correlator having enhanced memory for reference and input data
US6438182B1 (en) 1999-03-02 2002-08-20 Harris Corporation Correlator with serial-parallel partition
US20020170591A1 (en) * 2001-05-15 2002-11-21 Pharmaseq, Inc. Method and apparatus for powering circuitry with on-chip solar cells within a common substrate
US7277647B2 (en) * 2002-03-14 2007-10-02 Lucent Technologies Inc. System and method of optical transmission
US7561634B2 (en) * 2004-06-15 2009-07-14 Harris Corporation Continuous phase modulation system and method with added orthogonal signals
US7539257B2 (en) * 2004-11-05 2009-05-26 Harris Corporation Continuous phase modulation system and method with added phase pulse
GB2521446A (en) * 2013-12-20 2015-06-24 Nordic Semiconductor Asa Digital processing
EP4055788B1 (en) * 2019-11-08 2024-06-12 Widex A/S Digital receiver with phase offset compensation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291410A (en) * 1979-10-24 1981-09-22 Rockwell International Corporation Multipath diversity spread spectrum receiver
US4527275A (en) * 1982-02-12 1985-07-02 Arinc Research Corporation Correlation data communications system
US4707839A (en) * 1983-09-26 1987-11-17 Harris Corporation Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform
DE3406083A1 (de) * 1984-02-20 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Drahtlos arbeitendes signaluebertragungssystem
US4583048A (en) * 1985-02-26 1986-04-15 Rca Corporation MSK digital demodulator for burst communications
US4694467A (en) * 1986-07-03 1987-09-15 Signatron, Inc. Modem for use in multipath communication systems
FR2612716B1 (fr) * 1987-03-19 1989-05-19 Snecma Procede et dispositif pour le codage et le decodage d'une emission a large bande dite a etalement de spectre
FR2629931B1 (fr) * 1988-04-08 1991-01-25 Lmt Radio Professionelle Correlateur numerique asynchrone et demodulateurs comportant un tel correlateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2060536A1 (es) * 1992-11-30 1994-11-16 Alcatel Standard Electrica Sintetizador de frecuencias.

Also Published As

Publication number Publication date
US4995052A (en) 1991-02-19
IL87868A0 (en) 1989-03-31
IL87868A (en) 1992-05-25
NO163800B (no) 1990-04-09
DE3888845D1 (de) 1994-05-05
PT88784A (pt) 1989-07-31
TR25668A (tr) 1993-06-14
NO163800C (no) 1990-07-18
NO874342D0 (no) 1987-10-19
DK95590A (da) 1990-04-18
DK167085B1 (da) 1993-08-23
PT88784B (pt) 1994-03-31
EP0386029B1 (en) 1994-03-30
NO874342L (no) 1989-04-20
EP0386029A1 (en) 1990-09-12
DK95590D0 (da) 1990-04-18
DE3888845T2 (de) 1994-08-11
WO1989004095A1 (en) 1989-05-05
CA1299658C (en) 1992-04-28

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2008-10-19

FD1A Patent lapsed

Effective date: 20061020