BR9408527A - Método e aparelho para redução da inteferência de sinais de entrada produzida por usuários múltiplos em sistemas de comunicação e sistema de comunicação cdma que os utilizam - Google Patents

Método e aparelho para redução da inteferência de sinais de entrada produzida por usuários múltiplos em sistemas de comunicação e sistema de comunicação cdma que os utilizam

Info

Publication number
BR9408527A
BR9408527A BR9408527A BR9408527A BR9408527A BR 9408527 A BR9408527 A BR 9408527A BR 9408527 A BR9408527 A BR 9408527A BR 9408527 A BR9408527 A BR 9408527A BR 9408527 A BR9408527 A BR 9408527A
Authority
BR
Brazil
Prior art keywords
interference
reducing
input signals
multiple users
signals produced
Prior art date
Application number
BR9408527A
Other languages
English (en)
Inventor
Evangelos Eleftheriou
Brent Robert Petersen
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of BR9408527A publication Critical patent/BR9408527A/pt

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
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H04L25/03044—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using fractionally spaced delay lines or combinations of fractionally integrally spaced taps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Feedback Control In General (AREA)
BR9408527A 1994-02-10 1994-02-10 Método e aparelho para redução da inteferência de sinais de entrada produzida por usuários múltiplos em sistemas de comunicação e sistema de comunicação cdma que os utilizam BR9408527A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1994/000374 WO1995022209A1 (en) 1994-02-10 1994-02-10 Method and apparatus for multiuser-interference reduction

Publications (1)

Publication Number Publication Date
BR9408527A true BR9408527A (pt) 1997-08-05

Family

ID=8165825

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9408527A BR9408527A (pt) 1994-02-10 1994-02-10 Método e aparelho para redução da inteferência de sinais de entrada produzida por usuários múltiplos em sistemas de comunicação e sistema de comunicação cdma que os utilizam

Country Status (8)

Country Link
US (1) US5761237A (pt)
EP (1) EP0744101B1 (pt)
JP (1) JP2839039B2 (pt)
KR (1) KR100228950B1 (pt)
BR (1) BR9408527A (pt)
CA (1) CA2179979C (pt)
DE (1) DE69412288T2 (pt)
WO (1) WO1995022209A1 (pt)

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US8831130B1 (en) * 1999-10-16 2014-09-09 Ipcom Gmbh & Co. Kg Channel estimate predicted from several previous channel estimates, for pre-equalization
US6975666B2 (en) 1999-12-23 2005-12-13 Institut National De La Recherche Scientifique Interference suppression in CDMA systems
US7292661B1 (en) * 2000-03-20 2007-11-06 Massachusetts Institute Of Technology Block-iterative equalizers for digital communication system
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US7016440B1 (en) * 2000-08-16 2006-03-21 The Board Of Trustees Of The University Of Illinois Iterative MMSE equalization-decoder soft information exchange decoding method and device
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US7636403B2 (en) 2001-02-20 2009-12-22 Massachusetts Institute Of Technology Correlation shaping multi-signature receiver
US7751469B2 (en) 2001-02-20 2010-07-06 Massachusetts Institute Of Technology Correlation shaping matched filter receiver
US7933342B2 (en) * 2001-06-15 2011-04-26 Texas Instruments Incorporated Multipath equalization for MIMO multiuser systems
DE60107407T2 (de) * 2001-07-05 2005-05-19 Mitsubishi Electric Information Technology Centre Europe B.V. Mehrbenutzerdetektion in einem MC-CDMA Telekommunikationssystem
EP1300977A1 (en) * 2001-10-04 2003-04-09 Mitsubishi Electric Information Technology Centre Europe B.V. Parallel interference cancellation in an MC-CDMA telecommunication system
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US6785520B2 (en) * 2002-03-01 2004-08-31 Cognio, Inc. System and method for antenna diversity using equal power joint maximal ratio combining
US6873651B2 (en) * 2002-03-01 2005-03-29 Cognio, Inc. System and method for joint maximal ratio combining using time-domain signal processing
US6862456B2 (en) * 2002-03-01 2005-03-01 Cognio, Inc. Systems and methods for improving range for multicast wireless communication
US6687492B1 (en) * 2002-03-01 2004-02-03 Cognio, Inc. System and method for antenna diversity using joint maximal ratio combining
JP3888189B2 (ja) * 2002-03-12 2007-02-28 松下電器産業株式会社 適応アンテナ基地局装置
US6871049B2 (en) * 2002-03-21 2005-03-22 Cognio, Inc. Improving the efficiency of power amplifiers in devices using transmit beamforming
CN1698274B (zh) * 2002-07-30 2012-07-18 美商智慧财产权授权股份有限公司 多输入多输出无线通信的装置及方法
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8761321B2 (en) * 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
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US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
CN100466671C (zh) * 2004-05-14 2009-03-04 华为技术有限公司 语音切换方法及其装置
US7532667B2 (en) * 2004-11-05 2009-05-12 Interdigital Technology Corporation Pilot-directed and pilot/data-directed equalizers
US7768989B2 (en) * 2005-03-04 2010-08-03 Itt Manufacturing Enterprises, Inc. Method and apparatus for multipoint voice operation in a wireless, Ad-Hoc environment
US7889755B2 (en) * 2005-03-31 2011-02-15 Qualcomm Incorporated HSDPA system with reduced inter-user interference
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Also Published As

Publication number Publication date
KR970700962A (ko) 1997-02-12
CA2179979A1 (en) 1995-08-17
JPH09503113A (ja) 1997-03-25
DE69412288D1 (de) 1998-09-10
EP0744101B1 (en) 1998-08-05
US5761237A (en) 1998-06-02
EP0744101A1 (en) 1996-11-27
WO1995022209A1 (en) 1995-08-17
KR100228950B1 (ko) 1999-11-01
DE69412288T2 (de) 1999-04-22
JP2839039B2 (ja) 1998-12-16
CA2179979C (en) 2001-07-03

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Legal Events

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FA10 Dismissal: dismissal - article 33 of industrial property law