CA2721849A1 - Systemes et procedes de transmission et de reception de donnees supplementaires sur des signaux radio audio numeriques de satellite existant - Google Patents
Systemes et procedes de transmission et de reception de donnees supplementaires sur des signaux radio audio numeriques de satellite existant Download PDFInfo
- Publication number
- CA2721849A1 CA2721849A1 CA2721849A CA2721849A CA2721849A1 CA 2721849 A1 CA2721849 A1 CA 2721849A1 CA 2721849 A CA2721849 A CA 2721849A CA 2721849 A CA2721849 A CA 2721849A CA 2721849 A1 CA2721849 A1 CA 2721849A1
- Authority
- CA
- Canada
- Prior art keywords
- symbols
- modulation
- signal
- legacy
- scheme
- 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.)
- Abandoned
Links
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Radio Relay Systems (AREA)
Abstract
La présente invention porte sur des systèmes et sur des procédés de transmission et de réception de données supplémentaires, telles que des données vidéo, sur des signaux radio audio numériques de satellite existant. Dans des modes de réalisation donnés à titre d'exemple, une modulation hiérarchique peut être utilisée pour transmettre des informations secondaires sur un signal existant. Par exemple, le système de service de radio audio numérique par satellite de Sirius (« SDARS ») peut utiliser une seconde couche de modulation pour transmettre des données vidéo sur son signal audio habituel. Afin de prendre en charge de futurs services tels que celui-ci dans la conception de système d'origine, connu parfois sous le nom de système « patrimonial », une largeur de bande d'information supplémentaire peut être acquise, par exemple en utilisant une modulation hiérarchique pour des données de recouvrement pour de tels nouveaux services sur la transmission existante. Dans un tel système, par exemple, des données de recouvrement peuvent être transmises par application d'un décalage angulaire programmable aux symboles QPSK existants pour former une nouvelle constellation satellitaire similaire à 8PSK.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12462608P | 2008-04-18 | 2008-04-18 | |
| US61/124,626 | 2008-04-18 | ||
| US12/183,980 | 2008-07-31 | ||
| US12/183,980 US20090168809A1 (en) | 2007-07-31 | 2008-07-31 | Method and apparatus to jointly synchronize a legacy sdars signal with overlay modulation |
| US12/184,659 US8184743B2 (en) | 2007-08-01 | 2008-08-01 | Overlay modulation technique for COFDM signals based on amplitude offsets |
| US12/184,659 | 2008-08-01 | ||
| US12/416,027 | 2009-03-31 | ||
| US12/416,027 US8306145B2 (en) | 2008-03-31 | 2009-03-31 | Overlay modulation of COFDM using phase and amplitude offset carriers |
| PCT/US2009/041174 WO2009146217A2 (fr) | 2008-04-18 | 2009-04-20 | Systèmes et procédés de transmission et de réception de données supplémentaires sur des signaux radio audio numériques de satellite existant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2721849A1 true CA2721849A1 (fr) | 2009-12-03 |
Family
ID=41377886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2721849A Abandoned CA2721849A1 (fr) | 2008-04-18 | 2009-04-20 | Systemes et procedes de transmission et de reception de donnees supplementaires sur des signaux radio audio numeriques de satellite existant |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2721849A1 (fr) |
| WO (1) | WO2009146217A2 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0208425A3 (fr) * | 1985-06-13 | 1988-01-13 | Devon County Council | Transmission par la sous-porteuse de signaux de télévision |
| US6512749B1 (en) * | 1999-09-29 | 2003-01-28 | Trw Inc. | Downlink transmission and reception techniques for a processing communication satellite |
| US20020059616A1 (en) * | 2000-03-31 | 2002-05-16 | Ucentric Holdings, Inc. | System and method for providing video programming information to television receivers over a unitary set of channels |
| JP4589711B2 (ja) * | 2004-12-14 | 2010-12-01 | 富士通株式会社 | 無線通信システム及び無線通信装置 |
-
2009
- 2009-04-20 WO PCT/US2009/041174 patent/WO2009146217A2/fr active Application Filing
- 2009-04-20 CA CA2721849A patent/CA2721849A1/fr not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009146217A2 (fr) | 2009-12-03 |
| WO2009146217A3 (fr) | 2010-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20140404 |
|
| FZDE | Discontinued |
Effective date: 20170420 |
|
| FZDE | Discontinued |
Effective date: 20170420 |