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
- pct
- signals
- sec
- carrier
- date
- 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
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).
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)
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)
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 |
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 |
US6038271A (en) * | 1999-03-02 | 2000-03-14 | Harris Corporation | Correlator with cascade data paths to facilitate expansion of correlator length |
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 |
US11929855B2 (en) * | 2019-11-08 | 2024-03-12 | Widex A/S | Digital receiver with phase offset compensation |
Family Cites Families (8)
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 |
-
1987
- 1987-10-19 NO NO874342A patent/NO163800C/no unknown
-
1988
- 1988-09-29 IL IL87868A patent/IL87868A/xx not_active IP Right Cessation
- 1988-10-12 DE DE3888845T patent/DE3888845T2/de not_active Expired - Fee Related
- 1988-10-12 US US07/473,962 patent/US4995052A/en not_active Expired - Lifetime
- 1988-10-12 WO PCT/NO1988/000075 patent/WO1989004095A1/en active IP Right Grant
- 1988-10-12 TR TR88/0725A patent/TR25668A/xx unknown
- 1988-10-12 EP EP88908763A patent/EP0386029B1/en not_active Expired - Lifetime
- 1988-10-17 CA CA000580354A patent/CA1299658C/en not_active Expired - Lifetime
- 1988-10-18 PT PT88784A patent/PT88784B/pt not_active IP Right Cessation
- 1988-10-19 ES ES8803165A patent/ES2009068A6/es not_active Expired
-
1990
- 1990-04-18 DK DK095590A patent/DK167085B1/da active
Cited By (1)
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 |
---|---|
CA1299658C (en) | 1992-04-28 |
DK167085B1 (da) | 1993-08-23 |
DK95590A (da) | 1990-04-18 |
NO163800B (no) | 1990-04-09 |
EP0386029B1 (en) | 1994-03-30 |
NO874342L (no) | 1989-04-20 |
DK95590D0 (da) | 1990-04-18 |
DE3888845D1 (de) | 1994-05-05 |
EP0386029A1 (en) | 1990-09-12 |
DE3888845T2 (de) | 1994-08-11 |
NO163800C (no) | 1990-07-18 |
NO874342D0 (no) | 1987-10-19 |
PT88784A (pt) | 1989-07-31 |
US4995052A (en) | 1991-02-19 |
PT88784B (pt) | 1994-03-31 |
TR25668A (tr) | 1993-06-14 |
IL87868A (en) | 1992-05-25 |
WO1989004095A1 (en) | 1989-05-05 |
IL87868A0 (en) | 1989-03-31 |
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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 |