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DE69906811D1 - Verfahren und vorrichtung zur interferenzunterdrückung in spreizspektrumnachrichtenübertragungssystemen - Google Patents

Verfahren und vorrichtung zur interferenzunterdrückung in spreizspektrumnachrichtenübertragungssystemen

Info

Publication number
DE69906811D1
DE69906811D1 DE69906811T DE69906811T DE69906811D1 DE 69906811 D1 DE69906811 D1 DE 69906811D1 DE 69906811 T DE69906811 T DE 69906811T DE 69906811 T DE69906811 T DE 69906811T DE 69906811 D1 DE69906811 D1 DE 69906811D1
Authority
DE
Germany
Prior art keywords
correlations
resolved
signal components
spreading
spreading sequences
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.)
Expired - Lifetime
Application number
DE69906811T
Other languages
English (en)
Inventor
Eric Wang
Ali Khayrallah
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.)
Ericsson Inc
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DE69906811D1 publication Critical patent/DE69906811D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
DE69906811T 1999-01-22 1999-11-12 Verfahren und vorrichtung zur interferenzunterdrückung in spreizspektrumnachrichtenübertragungssystemen Expired - Lifetime DE69906811D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/235,470 US6501788B1 (en) 1999-01-22 1999-01-22 Apparatus and methods for intereference cancellation in spread spectrum communications systems
PCT/US1999/026911 WO2000044106A1 (en) 1999-01-22 1999-11-12 Apparatus and methods for interference cancellation in spread spectrum communication system

Publications (1)

Publication Number Publication Date
DE69906811D1 true DE69906811D1 (de) 2003-05-15

Family

ID=22885648

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69906811T Expired - Lifetime DE69906811D1 (de) 1999-01-22 1999-11-12 Verfahren und vorrichtung zur interferenzunterdrückung in spreizspektrumnachrichtenübertragungssystemen

Country Status (8)

Country Link
US (1) US6501788B1 (de)
EP (1) EP1147620B1 (de)
JP (1) JP4263368B2 (de)
CN (1) CN1146136C (de)
AT (1) ATE237199T1 (de)
AU (1) AU1622400A (de)
DE (1) DE69906811D1 (de)
WO (1) WO2000044106A1 (de)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000295200A (ja) * 1999-04-01 2000-10-20 Matsushita Electric Ind Co Ltd 干渉信号除去装置
JP3251261B2 (ja) * 1999-04-21 2002-01-28 エヌイーシーモバイリング株式会社 Ｃｄｍａ受信装置
DE19918386C2 (de) * 1999-04-22 2003-08-28 Siemens Ag Verfahren und Vorrichtung zum Decodieren eines Codemultiplex-Signals sowie Verwendung der Vorrichtung
US6816541B1 (en) * 1999-05-24 2004-11-09 Texas Instruments Incorporated Spread spectrum interference cancellation
US6885691B1 (en) * 1999-08-02 2005-04-26 Lg Information & Communications, Ltd. Scrambling codes and channelization codes for multiple chip rate signals in CDMA cellular mobile radio communication system
US7123579B1 (en) * 1999-08-04 2006-10-17 Lg Electronics Inc. Method of transmitting non-orthogonal physical channels in the communications system
US7415061B2 (en) * 1999-08-31 2008-08-19 Broadcom Corporation Cancellation of burst noise in a communication system with application to S-CDMA
US6115406A (en) * 1999-09-10 2000-09-05 Interdigital Technology Corporation Transmission using an antenna array in a CDMA communication system
US6278726B1 (en) * 1999-09-10 2001-08-21 Interdigital Technology Corporation Interference cancellation in a spread spectrum communication system
US6973063B1 (en) * 2000-03-21 2005-12-06 Ericsson, Inc. Methods, systems and apparatus for precompensating for interference among transmitted coded signals
JP3672808B2 (ja) * 2000-09-06 2005-07-20 松下電器産業株式会社 無線通信端末装置及び干渉キャンセル方法
EP1202483A1 (de) * 2000-10-27 2002-05-02 Alcatel Korrelierte Spreizsequenzen für hochratige nicht-kohärente Nachrichtenübertragungssysteme
US7012977B2 (en) * 2000-12-29 2006-03-14 Telefonaktiebolaget Lm Ericsson (Publ) System, method and apparatus for wireless channel parameter estimation in spread spectrum communication systems
US7697594B2 (en) * 2001-03-30 2010-04-13 Texas Instruments Incorporated Method and apparatus for regenerative based interference cancellation within a communication system
JP3492646B2 (ja) * 2001-04-20 2004-02-03 松下電器産業株式会社 基地局探索方法および移動体無線端末装置
WO2003017558A2 (en) 2001-08-21 2003-02-27 Morphics Technology, Inc. Method and apparatus for enhancing data rates in spread spectrum communication systems
US8085889B1 (en) 2005-04-11 2011-12-27 Rambus Inc. Methods for managing alignment and latency in interference cancellation
US7158559B2 (en) 2002-01-15 2007-01-02 Tensor Comm, Inc. Serial cancellation receiver design for a coded signal processing engine
FR2831717A1 (fr) * 2001-10-25 2003-05-02 France Telecom Methode et systeme d'elimination d'interference pour antenne multicapteur
US7394879B2 (en) 2001-11-19 2008-07-01 Tensorcomm, Inc. Systems and methods for parallel signal cancellation
US7260506B2 (en) 2001-11-19 2007-08-21 Tensorcomm, Inc. Orthogonalization and directional filtering
US7039134B1 (en) * 2002-01-22 2006-05-02 Comsys Communication & Signal Processing Ltd. Reduced complexity correlator for use in a code division multiple access spread spectrum receiver
KR100907672B1 (ko) * 2002-03-25 2009-07-14 인터디지탈 테크날러지 코포레이션 통신 신호 수신 방법
TWI389487B (zh) 2002-04-19 2013-03-11 Interdigital Tech Corp 通信站及無線通信方法
CN1561595A (zh) * 2002-06-21 2005-01-05 连宇通信有限公司 一种ls码多码道扩频方法
SG108874A1 (en) * 2002-09-17 2005-02-28 Sony Corp Channel equalisation
US7577186B2 (en) 2002-09-20 2009-08-18 Tensorcomm, Inc Interference matrix construction
US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US7787572B2 (en) 2005-04-07 2010-08-31 Rambus Inc. Advanced signal processors for interference cancellation in baseband receivers
US7463609B2 (en) 2005-07-29 2008-12-09 Tensorcomm, Inc Interference cancellation within wireless transceivers
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8179946B2 (en) 2003-09-23 2012-05-15 Rambus Inc. Systems and methods for control of advanced receivers
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
AU2003278919A1 (en) * 2002-09-23 2004-04-08 Tensorcomm Inc. Method and apparatus for selectively applying interference cancellation in spread spectrum systems
KR100504804B1 (ko) * 2002-09-28 2005-08-01 엘지전자 주식회사 Ｗｃｄｍａ시스템의 역채널화방법
AU2003301493A1 (en) 2002-10-15 2004-05-04 Tensorcomm Inc. Method and apparatus for interference suppression with efficient matrix inversion in a ds-cdma system
AU2003282942A1 (en) 2002-10-15 2004-05-04 Tensorcomm Inc. Method and apparatus for channel amplitude estimation and interference vector construction
US20040091055A1 (en) * 2002-10-30 2004-05-13 Williams Thomas Holtzman Digital transmission system using non-orthogonal matrices
US20040240529A1 (en) * 2003-05-28 2004-12-02 Leonard Eric David Discontinuous transmission detection method
US7269199B2 (en) * 2003-08-28 2007-09-11 Lenovo (Singapore) Pte. Ltd. Apparatus and method employing dynamic hop sequence adjustment in FHSS networks
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US7477710B2 (en) 2004-01-23 2009-01-13 Tensorcomm, Inc Systems and methods for analog to digital conversion with a signal cancellation system of a receiver
KR100818774B1 (ko) 2004-01-29 2008-04-03 포스데이타 주식회사 광대역 무선 통신 시스템에서 다중-반송파 및 직접 시퀀스확산 스펙트럼 신호를 중첩시키는 방법 및 장치
KR101160094B1 (ko) * 2005-01-05 2012-06-27 에이티씨 테크놀로지즈, 엘엘씨. 위성 통신 시스템 및 방법에서 다수의 사용자를 검출하고간섭을 감소시키는 적응적인 빔 포밍
US7483386B2 (en) * 2005-03-31 2009-01-27 Alcatel-Lucent Usa Inc. Adaptive threshold setting for discontinuous transmission detection
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
US7729411B2 (en) 2005-04-27 2010-06-01 Telefonaktiebolaget L M Ericsson (Publ) Joint detector in a code division multiple access radio receiver
EP1724602B1 (de) 2005-05-10 2014-04-23 STMicroelectronics (Research & Development) Limited System, Ortungsgerät und Verfahren zur Signalakquisition
CN1929353B (zh) * 2005-09-09 2012-04-25 展讯通信（上海）有限公司 同频小区信道估计方法及装置
US7881412B2 (en) * 2005-11-21 2011-02-01 Qualcomm Incorporated Quasi-linear interference cancellation for wireless communication
WO2007066283A1 (en) * 2005-12-06 2007-06-14 Nxp B.V. Determination of active spreading codes and their powers
US7751463B2 (en) * 2006-12-05 2010-07-06 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for suppressing interference based on channelization code power estimation with bias removal
CN1972165B (zh) * 2006-12-15 2010-12-08 华为技术有限公司 一种干扰检测方法及装置
US9119132B2 (en) 2007-10-10 2015-08-25 Qualcomm Incorporated Efficient system identification schemes for communication systems
US7995641B2 (en) * 2007-11-06 2011-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for code power parameter estimation for received signal processing
US8249540B1 (en) 2008-08-07 2012-08-21 Hypres, Inc. Two stage radio frequency interference cancellation system and method
US8615030B2 (en) * 2009-05-04 2013-12-24 Qualcomm Incorporated Method and system for multi-user detection using two-stage processing
US8494029B2 (en) * 2009-05-04 2013-07-23 Qualcomm Incorporated Method and system for multi-user detection in the presence of multiple spreading factors
US8494098B2 (en) * 2009-05-04 2013-07-23 Qualcomm Incorporated Method and system for inter-cell interference cancellation
CN101902780B (zh) * 2009-05-26 2013-03-13 上海贝尔股份有限公司 无线多用户通信的方法及其装置
US8451963B2 (en) * 2009-06-09 2013-05-28 Qualcomm Incorporated Method and system for interference cancellation
US8611481B2 (en) * 2011-02-25 2013-12-17 Broadcom Corporation Blind control channel detection
US8693971B1 (en) * 2012-12-07 2014-04-08 Intel Mobile Communications GmbH Receiver, receiver circuits, and methods for providing an interference-reduced signal
US11361195B2 (en) * 2015-10-16 2022-06-14 Hewlett Packard Enterprise Development Lp Incremental update of a neighbor graph via an orthogonal transform based indexing
US11291020B2 (en) * 2019-04-10 2022-03-29 Hussein Moradi Spread spectrum scheduling requests for wireless communication resource

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673291A (en) 1994-09-14 1997-09-30 Ericsson Inc. Simultaneous demodulation and decoding of a digitally modulated radio signal using known symbols
US5572552A (en) 1994-01-27 1996-11-05 Ericsson Ge Mobile Communications Inc. Method and system for demodulation of downlink CDMA signals
US5465269A (en) * 1994-02-02 1995-11-07 Motorola, Inc. Method and apparatus for encoding and decoding a supplementary signal
US5724378A (en) 1994-12-13 1998-03-03 Nit Mobile Communications Network, Inc. CDMA multiuser receiver and method
US5615209A (en) 1995-07-26 1997-03-25 Ericsson Inc. Method and apparatus for CDMA signal orthogonalization
US5978413A (en) 1995-08-28 1999-11-02 Bender; Paul E. Method and system for processing a plurality of multiple access transmissions
FI105517B (fi) 1996-10-18 2000-08-31 Nokia Networks Oy Vastaanottomenetelmä ja vastaanotin
US6298050B1 (en) 1998-11-25 2001-10-02 Nortel Networks Limited System and method for cancelling the extra interference created during position location in a CDMA cellular system

Also Published As

Publication number Publication date
EP1147620B1 (de) 2003-04-09
CN1339202A (zh) 2002-03-06
CN1146136C (zh) 2004-04-14
US6501788B1 (en) 2002-12-31
AU1622400A (en) 2000-08-07
JP4263368B2 (ja) 2009-05-13
JP2002535913A (ja) 2002-10-22
EP1147620A1 (de) 2001-10-24
ATE237199T1 (de) 2003-04-15
WO2000044106A1 (en) 2000-07-27

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