EP1733488A4 - Method and system for multi-user channel estimation in ds-cdma systems - Google Patents
Method and system for multi-user channel estimation in ds-cdma systemsInfo
- Publication number
- EP1733488A4 EP1733488A4 EP05734303A EP05734303A EP1733488A4 EP 1733488 A4 EP1733488 A4 EP 1733488A4 EP 05734303 A EP05734303 A EP 05734303A EP 05734303 A EP05734303 A EP 05734303A EP 1733488 A4 EP1733488 A4 EP 1733488A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel estimation
- cdma systems
- user channel
- cdma
- systems
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/025—Channel estimation channel estimation algorithms using least-mean-square [LMS] method
-
- 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
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7105—Joint detection techniques, e.g. linear detectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3913—Predictive models, e.g. based on neural network models
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56059104P | 2004-04-09 | 2004-04-09 | |
PCT/CA2005/000543 WO2005099130A1 (en) | 2004-04-09 | 2005-04-08 | Method and system for multi-user channel estimation in ds-cdma systems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1733488A1 EP1733488A1 (en) | 2006-12-20 |
EP1733488A4 true EP1733488A4 (en) | 2010-07-14 |
Family
ID=35125430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05734303A Withdrawn EP1733488A4 (en) | 2004-04-09 | 2005-04-08 | Method and system for multi-user channel estimation in ds-cdma systems |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1733488A4 (en) |
WO (1) | WO2005099130A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010516166A (en) * | 2007-01-10 | 2010-05-13 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | How to classify radio channels |
CN102035765A (en) * | 2010-11-18 | 2011-04-27 | 中国人民解放军理工大学 | MMSE (Minimum Mean Squared Error) channel estimation method based on maximum time delay real time estimation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001084733A1 (en) * | 2000-05-03 | 2001-11-08 | Siemens Aktiengesellschaft | Channel estimator for a pipelined interference cancellation apparatus |
EP1359684A1 (en) * | 2002-04-30 | 2003-11-05 | Motorola Energy Systems Inc. | Wireless transmission using an adaptive transmit antenna array |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE470371B (en) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Methods and apparatus for digital signal transmission to estimate transmitted symbols at a receiver |
SG77607A1 (en) * | 1997-08-26 | 2001-01-16 | Univ Singapore | A multi-user code division multiple access receiver |
JP2991179B2 (en) * | 1998-01-08 | 1999-12-20 | 日本電気株式会社 | CDMA multi-user receiver |
-
2005
- 2005-04-08 WO PCT/CA2005/000543 patent/WO2005099130A1/en active Application Filing
- 2005-04-08 EP EP05734303A patent/EP1733488A4/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001084733A1 (en) * | 2000-05-03 | 2001-11-08 | Siemens Aktiengesellschaft | Channel estimator for a pipelined interference cancellation apparatus |
EP1359684A1 (en) * | 2002-04-30 | 2003-11-05 | Motorola Energy Systems Inc. | Wireless transmission using an adaptive transmit antenna array |
Non-Patent Citations (4)
Title |
---|
LARS LINDBOM ET AL: "Tracking of Time-Varying Mobile Radio Channels-Part II: A Case Study", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 50, no. 1, 1 January 2002 (2002-01-01), , IEEE SERVICE CENTER, PISCATAWAY, NJ, US, XP011010102, ISSN: 0090-6778 * |
LINDBOM L ET AL: "Automatic tuning of the step size in WLMS algorithms: applications to EDGE", VTC 2002-FALL. 2002 IEEE 56TH. VEHICULAR TECHNOLOGY CONFERENCE PROCEEDINGS, vol. 4, 24 September 2002 (2002-09-24), IEEE, NEW YORK, NY, pages 2229 - 2233, XP010608829, ISBN: 978-0-7803-7467-6 * |
See also references of WO2005099130A1 * |
TENG JOON LIM ET AL: "Adaptive IIR filtering for asynchronous multiuser CDMA detection", SIGNALS, SYSTEMS, AND COMPUTERS, 1999. CONFERENCE RECORD OF THE THIRTY 19991024; 19991024 - 19991027 PISCATAWAY, NJ, USA,IEEE, US, vol. 2, 24 October 1999 (1999-10-24), pages 935 - 939, XP010373774, ISBN: 978-0-7803-5700-6 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005099130A1 (en) | 2005-10-20 |
EP1733488A1 (en) | 2006-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20061006 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MASSICOTTE, DANIEL Inventor name: AHMED-OUAMEUR, MESSAOUD |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20100614 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H04B 1/707 20060101ALN20100608BHEP Ipc: H04L 25/02 20060101AFI20100608BHEP |
|
17Q | First examination report despatched |
Effective date: 20100812 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20110225 |