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 systems

Info

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Withdrawn
Application number
EP05734303A
Other languages
German (de)
French (fr)
Other versions
EP1733488A1 (en
Inventor
Messaoud Ahmed-Ouameur
Daniel Massicotte
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.)
Axiocom Inc
Original Assignee
Axiocom Inc
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 Axiocom Inc filed Critical Axiocom Inc
Publication of EP1733488A1 publication Critical patent/EP1733488A1/en
Publication of EP1733488A4 publication Critical patent/EP1733488A4/en
Withdrawn legal-status Critical Current

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)
EP05734303A 2004-04-09 2005-04-08 Method and system for multi-user channel estimation in ds-cdma systems Withdrawn EP1733488A4 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2119064A4 (en) * 2007-01-10 2012-09-19 Ericsson Telefon Ab L M Method for classifying 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
EP1733488A1 (en) 2006-12-20
WO2005099130A1 (en) 2005-10-20

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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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

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