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WO2007019679A3 - Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions - Google Patents

Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions Download PDF

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Publication number
WO2007019679A3
WO2007019679A3 PCT/CA2006/001322 CA2006001322W WO2007019679A3 WO 2007019679 A3 WO2007019679 A3 WO 2007019679A3 CA 2006001322 W CA2006001322 W CA 2006001322W WO 2007019679 A3 WO2007019679 A3 WO 2007019679A3
Authority
WO
WIPO (PCT)
Prior art keywords
channel
cholesky
space
communications device
wireless communications
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.)
Ceased
Application number
PCT/CA2006/001322
Other languages
French (fr)
Other versions
WO2007019679A2 (en
Inventor
Huan Wu
Sean Simmons
Zoltan Kemenczy
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.)
BlackBerry Ltd
Original Assignee
Research in Motion Ltd
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 Research in Motion Ltd filed Critical Research in Motion Ltd
Priority to AU2006281941A priority Critical patent/AU2006281941A1/en
Priority to JP2008526337A priority patent/JP2009505526A/en
Priority to CA002619117A priority patent/CA2619117A1/en
Priority to EP06790540A priority patent/EP1922816A4/en
Priority to CN2006800377529A priority patent/CN101283516B/en
Priority to BRPI0614356-3A priority patent/BRPI0614356A2/en
Publication of WO2007019679A2 publication Critical patent/WO2007019679A2/en
Publication of WO2007019679A3 publication Critical patent/WO2007019679A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • 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
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Noise Elimination (AREA)

Abstract

A wireless communications device may include a wireless transmitter and a wireless receiver. The wireless receiver may include a filter for reducing co-channel interference and may include a multi-channel, space-time filter circuit that filters n signal parts that have been split from a communications signal by jointly estimating space-time filter weights and multi-channel impulse responses (CIRs) based upon Cholesky and eigenvalue decompositions. The filter may further include a multi-channel, matched filter circuit that receives multi-channel signals from the multi-channel, space-time filter circuit and has a filter response that is provided by a channel impulse response estimation from the space-time filter circuit.
PCT/CA2006/001322 2005-08-15 2006-08-14 Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions Ceased WO2007019679A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2006281941A AU2006281941A1 (en) 2005-08-15 2006-08-14 Wireless communications device including a joint space-time optimum filter (JSTOF) using Cholesky and eigenvalue decompositions
JP2008526337A JP2009505526A (en) 2005-08-15 2006-08-14 Wireless communication device including integrated space-time optimal filter (JSTOF) using Cholesky decomposition and eigenvalue decomposition
CA002619117A CA2619117A1 (en) 2005-08-15 2006-08-14 Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions
EP06790540A EP1922816A4 (en) 2005-08-15 2006-08-14 Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions
CN2006800377529A CN101283516B (en) 2005-08-15 2006-08-14 Wireless communication device including joint space-time optimal filter using Cholesky and eigenvalue decomposition
BRPI0614356-3A BRPI0614356A2 (en) 2005-08-15 2006-08-14 wireless communications device that includes an optimal joint spacetime filter (jstof) using cholesky and eigenvalue decompositions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002515932A CA2515932A1 (en) 2005-08-15 2005-08-15 Implementation of joint space-time optimum filters (jstof) using cholesky and eigenvalue decompositions
CA2,515,932 2005-08-15

Publications (2)

Publication Number Publication Date
WO2007019679A2 WO2007019679A2 (en) 2007-02-22
WO2007019679A3 true WO2007019679A3 (en) 2007-11-08

Family

ID=37744685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/001322 Ceased WO2007019679A2 (en) 2005-08-15 2006-08-14 Wireless communications device including a joint space-time optimum filter (jstof) using cholesky and eigenvalue decompositions

Country Status (8)

Country Link
EP (1) EP1922816A4 (en)
JP (1) JP2009505526A (en)
KR (1) KR20080036223A (en)
CN (1) CN101283516B (en)
AU (1) AU2006281941A1 (en)
BR (1) BRPI0614356A2 (en)
CA (1) CA2515932A1 (en)
WO (1) WO2007019679A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2445150B1 (en) 2010-10-19 2013-12-04 ST-Ericsson SA Process for performing a QR decomposition of a channel matrix in a MIMO wireless communication system, and receiver for doing the same
EP2671332B1 (en) 2011-02-01 2019-10-23 BlackBerry Limited Mixed rank downlink multi-user interference alignment scheme
EP2671327B1 (en) * 2011-02-01 2019-07-24 BlackBerry Limited Downlink multi-user interference alignment scheme
CN104244265B (en) * 2013-06-13 2018-01-09 北京邮电大学 The communication means and system that D2D communications coexist with cellular communication under multiple antennas scene

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030142762A1 (en) * 2002-01-11 2003-07-31 Burke Joseph P. Wireless receiver method and apparatus using space-cover-time equalization
US20040192215A1 (en) * 2003-03-28 2004-09-30 Onggosanusi Eko N. Linear single-antenna interference cancellation receiver
US20060109938A1 (en) * 2004-11-19 2006-05-25 Raghu Challa Interference suppression with virtual antennas

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314147B1 (en) * 1997-11-04 2001-11-06 The Board Of Trustees Of The Leland Stanford Junior University Two-stage CCI/ISI reduction with space-time processing in TDMA cellular networks
US6714527B2 (en) * 1999-09-21 2004-03-30 Interdigital Techology Corporation Multiuser detector for variable spreading factors
DE60019091T2 (en) * 2000-05-05 2006-02-02 Lucent Technologies Inc. Radio communication system
TW540200B (en) * 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
CN1152504C (en) * 2001-10-22 2004-06-02 信息产业部电信传输研究所 Multipath searching and channel evaluating method based on digital matched filter
JP4806170B2 (en) * 2003-06-19 2011-11-02 三星電子株式会社 Apparatus and method for detecting and selectively filtering co-channel interference

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030142762A1 (en) * 2002-01-11 2003-07-31 Burke Joseph P. Wireless receiver method and apparatus using space-cover-time equalization
US20040192215A1 (en) * 2003-03-28 2004-09-30 Onggosanusi Eko N. Linear single-antenna interference cancellation receiver
US20060109938A1 (en) * 2004-11-19 2006-05-25 Raghu Challa Interference suppression with virtual antennas

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SAMARDZIJA ET AL.: "Performance Evaluation of the VBLAST Algorithm in W-CDMA Systems", VEHICULAR TECHNOLOGY CONFERENCE, vol. 2, October 2001 (2001-10-01), pages 723 - 727, XP010562523 *
See also references of EP1922816A4 *

Also Published As

Publication number Publication date
EP1922816A2 (en) 2008-05-21
JP2009505526A (en) 2009-02-05
WO2007019679A2 (en) 2007-02-22
CN101283516A (en) 2008-10-08
CA2515932A1 (en) 2007-02-15
CN101283516B (en) 2011-11-23
KR20080036223A (en) 2008-04-25
AU2006281941A1 (en) 2007-02-22
BRPI0614356A2 (en) 2011-03-22
EP1922816A4 (en) 2008-10-01

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