[go: up one dir, main page]

WO2007038017A3 - Inter-symbol interference cancellation for wireless multiple access - Google Patents

Inter-symbol interference cancellation for wireless multiple access Download PDF

Info

Publication number
WO2007038017A3
WO2007038017A3 PCT/US2006/036004 US2006036004W WO2007038017A3 WO 2007038017 A3 WO2007038017 A3 WO 2007038017A3 US 2006036004 W US2006036004 W US 2006036004W WO 2007038017 A3 WO2007038017 A3 WO 2007038017A3
Authority
WO
WIPO (PCT)
Prior art keywords
inter
interference
symbol interference
multiple access
interference cancellation
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/US2006/036004
Other languages
French (fr)
Other versions
WO2007038017A2 (en
Inventor
Michael L Mccloud
Tommy Guess
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.)
TensorComm Inc
Original Assignee
TensorComm 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
Priority claimed from US11/233,636 external-priority patent/US8761321B2/en
Priority claimed from US11/479,401 external-priority patent/US7733941B2/en
Application filed by TensorComm Inc filed Critical TensorComm Inc
Publication of WO2007038017A2 publication Critical patent/WO2007038017A2/en
Publication of WO2007038017A3 publication Critical patent/WO2007038017A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71075—Parallel interference cancellation
    • 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
    • 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Radio Relay Systems (AREA)

Abstract

An interference-canceling receiver is configured for cancelling inter-symbol interference due to both inter- and intra-channel interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency-selective communication channels. The receiver mitigates the effects of post-cursor inter-symbol interference using feedback of previously estimated symbols, and mitigates pre-cursor inter-symbol interference using an interference canceller, such as an iterative interference canceller.
PCT/US2006/036004 2005-09-23 2006-09-15 Inter-symbol interference cancellation for wireless multiple access Ceased WO2007038017A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US11/233,636 US8761321B2 (en) 2005-04-07 2005-09-23 Optimal feedback weighting for soft-decision cancellers
US11/233,636 2005-09-23
US73620405P 2005-11-15 2005-11-15
US60/736,204 2005-11-15
US11/479,401 US7733941B2 (en) 2005-11-15 2006-06-29 Inter-symbol interference cancellation for wireless multiple access
US11/479,401 2006-06-29

Publications (2)

Publication Number Publication Date
WO2007038017A2 WO2007038017A2 (en) 2007-04-05
WO2007038017A3 true WO2007038017A3 (en) 2007-11-01

Family

ID=37900238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/036004 Ceased WO2007038017A2 (en) 2005-09-23 2006-09-15 Inter-symbol interference cancellation for wireless multiple access

Country Status (1)

Country Link
WO (1) WO2007038017A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006050179A1 (en) * 2006-10-25 2008-05-29 Alcatel Lucent Apparatus and method for emulating a reusable environment in a radio network arranged or expanding in an environment free of reusable effects

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5761237A (en) * 1994-02-10 1998-06-02 International Business Machines Corporation Method and apparatus for multiuser-interference reduction
US6912250B1 (en) * 1999-11-12 2005-06-28 Cornell Research Foundation Inc. System and methods for precursor cancellation of intersymbol interference in a receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5761237A (en) * 1994-02-10 1998-06-02 International Business Machines Corporation Method and apparatus for multiuser-interference reduction
US6912250B1 (en) * 1999-11-12 2005-06-28 Cornell Research Foundation Inc. System and methods for precursor cancellation of intersymbol interference in a receiver

Also Published As

Publication number Publication date
WO2007038017A2 (en) 2007-04-05

Similar Documents

Publication Publication Date Title
WO2006132835A3 (en) Reception of h-arq transmissions with interference cancellation in a quasi-orthogonal communication system
WO2007058791A3 (en) Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
PL1716655T3 (en) Adaptive feedback for mimo communication systems
WO2006073821A3 (en) Method and system for channel equalization and crosstalk estimation in a multicarrier data transmission system
WO2009085938A3 (en) Adjusting wireless signal transmission power
WO2007133974A3 (en) Interference cancellation in variable codelength systems for multi-access communication
WO2007058754A3 (en) An iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
WO2006091683A3 (en) Communication of interference mitigation related information between wireless devices
WO2011100583A3 (en) Digital communication system for use in high noise channels
AU2003281139A1 (en) Multistage adaptive parallel interference canceller
WO2007049845A3 (en) Communication apparatus
WO2009085869A3 (en) Receiver adjustment between pilot bursts
WO2006074448A3 (en) Methods and apparatus for identifying a distance vector and a route associated with a multi-channel wireless mesh network
WO2011087613A3 (en) Packet-loss handling for downlink multi-user multiple-input and multiple-output wireless network
WO2005062815A3 (en) Device with improved serial communication
WO2012084221A3 (en) Noise reduction between networks
WO2006115459A3 (en) Joint detector in a code division multiple access radio receiver
WO2006020157A3 (en) Use of adaptive filters in cdma wireless systems employing pilot signals
GB0413112D0 (en) High bandwidth, high gain receiver equaliser
WO2009025029A1 (en) Mobile station and transmission diversity control method
WO2009096719A3 (en) Method for selecting adaptive frequency baseband of walsh codes, adaptive frequency-selective spreader using the same and transmitting and receiving apparatus using the adaptive frequency-selective spreader
EP1758258A3 (en) Nonlinear precoding in code-division multiple access communication system
WO2007038017A3 (en) Inter-symbol interference cancellation for wireless multiple access
GB2430587B (en) Low noise inter-symbol and inter-carrier interference cancellation for multi-carrier modulation receivers
WO2011043600A3 (en) System and method for cancelling interference signals using digital signal processing

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06814733

Country of ref document: EP

Kind code of ref document: A2