EP1525696A4
Multiuser detector for variable spreading factors
Abstract
A method for the simultaneous reception of data from multiple sources having different spreading factors. A plurality of transmission response matrices are generated and grouped together for equal spreading factors. A plurality of spreading factor group matrices are assembled. A base matrix is formed based upon the spreading factor group matrix having a lowest spreading factor. An additional spreading factor group matrix is selected for consideration. Column placement reference index for the base matrix is derived. A reference location for the base matrix is derived. A column set from the selected spreading factor group matrix is derived. The column set is inserted into the base matrix. A total transmission response matrix is assembled.
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Projected expiry passed 11 June 2023, 3.3 years ago.
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Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| WO0122610A1 | Cites | World Intellectual Property Organization (WIPO) | A | Search report | 1-30 |
| WO0122610A | Cites | World Intellectual Property Organization (WIPO) | – | – | – |
| BENVENUTO N ET AL: "Joint detection with low computational complexity for hybrid TD-CDMA systems", VEHICULAR TECHNOLOGY CONFERENCE, 1999. VTC 1999 - FALL. IEEE VTS 50TH AMSTERDAM, NETHERLANDS 19-22 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, vol. 1, 19 September 1999 (1999-09-19), pages 618 - 622, XP010352853, ISBN: 0-7803-5435-4 | Non-patent | – | – | Search report | – |
| KARIMI H R ET AL: "A novel and efficient solution to block-based joint-detection using approximate Cholesky factorization", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 1998. THE NINTH IEEE INTERNATIONAL SYMPOSIUM ON BOSTON, MA, USA 8-11 SEPT. 1998, NEW YORK, NY, USA,IEEE, US, vol. 3, 8 September 1998 (1998-09-08), pages 1340 - 1345, XP010314638, ISBN: 0-7803-4872-9 | Non-patent | – | – | Search report | – |
81 members in 19 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 174121 | United States of America | – | |
| 17412102 | United States of America | A | |
| 0318438 | United States of America | W |
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| EP1525696A4This record | European Patent Office (EPO) | A4 | |
| HK1046338B | Hong Kong, China | B | |
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| EP1525696B1 | European Patent Office (EPO) | B1 | |
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| IL195539A | Israel | A | |
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Numbers
- Publication
- 1525696
- Application
- 37602737
Titles3
- German
- MEHRBENUTZERDETEKTOR FÜR VARIABLE SPREIZFAKTOREN
- English
- MULTIUSER DETECTOR FOR VARIABLE SPREADING FACTORS
- French
- DETECTEUR MULTI-UTILISATEUR POUR FACTEURS D'ETALEMENT VARIABLES
Classification
- CPC, 6
- H04B1/71052
- H04B1/7103
- H04B1/7105
- H04B2201/70703
- H04B2201/70705
- H03M13/23
- IPC, 3
- H04B1 7103
- H04B1 707
- H04B7 155
Designated states31
- Contracting states, 27
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Romania
- Sweden
and 3 moreShow fewer
- Slovenia
- Slovakia
- Türkiye
- Extension states, 4
- Albania
- Lithuania
- Latvia
- North Macedonia