IL147211A0 - Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics - Google Patents

Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics

Info

Publication number
IL147211A0
IL147211A0 IL14721100A IL14721100A IL147211A0 IL 147211 A0 IL147211 A0 IL 147211A0 IL 14721100 A IL14721100 A IL 14721100A IL 14721100 A IL14721100 A IL 14721100A IL 147211 A0 IL147211 A0 IL 147211A0
Authority
IL
Israel
Prior art keywords
weighting factors
spread spectrum
knowledge
spectrum signal
composite
Prior art date
Application number
IL14721100A
Other languages
English (en)
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
Publication of IL147211A0 publication Critical patent/IL147211A0/xx

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
    • H04B1/711—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
    • 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
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Noise Elimination (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
IL14721100A 1999-06-25 2000-05-10 Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics IL147211A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/344,899 US6714585B1 (en) 1999-06-25 1999-06-25 Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
PCT/US2000/012757 WO2001001595A1 (en) 1999-06-25 2000-05-10 Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics

Publications (1)

Publication Number Publication Date
IL147211A0 true IL147211A0 (en) 2002-08-14

Family

ID=23352561

Family Applications (2)

Application Number Title Priority Date Filing Date
IL14721100A IL147211A0 (en) 1999-06-25 2000-05-10 Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics
IL147211A IL147211A (en) 1999-06-25 2001-12-20 Methods and Devices to Attach in the Transmission Users of Distributed Gravity Coefficients Information of Signal Spread Characteristics

Family Applications After (1)

Application Number Title Priority Date Filing Date
IL147211A IL147211A (en) 1999-06-25 2001-12-20 Methods and Devices to Attach in the Transmission Users of Distributed Gravity Coefficients Information of Signal Spread Characteristics

Country Status (11)

Country Link
US (1) US6714585B1 (xx)
EP (1) EP1197007B1 (xx)
JP (1) JP4464020B2 (xx)
CN (1) CN1173485C (xx)
AT (1) ATE272272T1 (xx)
AU (1) AU4998900A (xx)
DE (1) DE60012531T2 (xx)
HK (1) HK1049929B (xx)
IL (2) IL147211A0 (xx)
MY (1) MY124218A (xx)
WO (1) WO2001001595A1 (xx)

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1117185A1 (en) * 2000-01-14 2001-07-18 Lucent Technologies Inc. Method and rake receiver for code-tracking in CDMA communication systems
EP1117186A1 (en) * 2000-01-14 2001-07-18 Lucent Technologies Inc. Adaptive code-tracking RAKE receiver for direct-sequence code-division multiple access (cdma) communications
EP1130792A1 (en) 2000-03-03 2001-09-05 Lucent Technologies Inc. A method and rake receiver for phasor estimation in communication systems
US20020006121A1 (en) * 2000-04-27 2002-01-17 Dileep George Adaptive diversity combining for wide band code division multiple access (W-CDMA) based on iterative channel estimation
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US6990137B2 (en) 2001-05-17 2006-01-24 Qualcomm, Incorporated System and method for received signal prediction in wireless communications systems
US7170924B2 (en) 2001-05-17 2007-01-30 Qualcomm, Inc. System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
KR100898446B1 (ko) * 2001-07-13 2009-05-21 톰슨 라이센싱 셀룰러 시스템에서의 디지털 오디오/비디오 브로드캐스트
US7440489B2 (en) * 2001-08-07 2008-10-21 Ericsson Inc. Method and apparatus for selective demodulation and decoding of communications signals
US7039363B1 (en) * 2001-09-28 2006-05-02 Arraycomm Llc Adaptive antenna array with programmable sensitivity
US6901103B2 (en) * 2002-01-15 2005-05-31 Qualcomm, Incorporated Determining combiner weights and log likelihood ratios for symbols transmitted on diversity channels
JP4007829B2 (ja) * 2002-03-08 2007-11-14 三洋電機株式会社 無線受信装置、アレイパラメータ最適値推定方法、およびアレイパラメータ最適値推定プログラム
EP1365518A1 (en) * 2002-05-21 2003-11-26 Nokia Corporation Method and apparatus for synchronisation of DS-CDMA multipath signals
CN1669236A (zh) * 2002-09-03 2005-09-14 诺基亚公司 无线系统
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
US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation 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
US7715508B2 (en) 2005-11-15 2010-05-11 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
DE60328514D1 (de) * 2002-11-12 2009-09-03 Broadcom Corp Verfahren und Vorrichtung zum Rake-kombinieren auf der Basis des Signal-zu-Interferenz-plus-Rausch-Verhältnis
FR2853170A1 (fr) * 2003-03-31 2004-10-01 Nortel Networks Ltd Procede de traitement d'un signal par un recepteur radio et recepteur radio pour la mise en oeuvre du procede
US7787522B2 (en) * 2003-04-11 2010-08-31 Telefonaktiebolaget Lm Ericsson (Publ) Joint multi-code detectors in CDMA communications system
US7239677B2 (en) * 2003-04-29 2007-07-03 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for soft symbol scaling
US7116998B2 (en) 2003-05-14 2006-10-03 Telefonaktiebolaget L M Ericsson (Publ) Subtractive multipath delay detection
KR100630039B1 (ko) * 2003-07-16 2006-09-27 삼성전자주식회사 적응 안테나 어레이 방식을 사용하는 이동 통신 시스템에서 데이터 수신 장치 및 방법
DE10345959B4 (de) * 2003-10-02 2005-12-15 Infineon Technologies Ag Betriebssituationsabhängige Ermittlung und Selektion der Übertragungspfade für die Einrichtung von Rake-Fingern von Rake-Empfängereinheiten in Mobilkommunikations-Endgeräten
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
US7376195B2 (en) * 2004-01-23 2008-05-20 Telefonaktiebolaget L M Ericsson (Publ) Digital communication systems having decreased memory
GB2411546B (en) * 2004-02-27 2007-05-30 Toshiba Res Europ Ltd Channel Estimation in a CDMA Receiver
US7339980B2 (en) 2004-03-05 2008-03-04 Telefonaktiebolaget Lm Ericsson (Publ) Successive interference cancellation in a generalized RAKE receiver architecture
JP2007528670A (ja) * 2004-03-09 2007-10-11 トムソン ライセンシング スペクトラム拡散システム用のハイブリッド型ｒａｋｅ／等化受信機
US7848389B2 (en) * 2004-03-12 2010-12-07 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for scaling parameter estimation in parametric generalized rake receivers
US7539240B2 (en) * 2004-03-12 2009-05-26 Telefonaftiebolaget Lm Ericsson (Publ) Method and apparatus for parameter estimation in a generalized rake receiver
US7536158B2 (en) 2004-03-29 2009-05-19 Telefonaktiebolaget Lm Ericsson (Publ) Impairment correlation estimation in a spread spectrum system
US9025638B2 (en) * 2004-06-16 2015-05-05 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus to compensate for receiver frequency error in noise estimation processing
US7711035B2 (en) 2004-09-17 2010-05-04 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for suppressing communication signal interference
EP1672812B1 (en) 2004-12-20 2009-03-25 Telefonaktiebolaget LM Ericsson (publ) Methods and devices for adjustment of transmission parameters
BRPI0519430A2 (pt) * 2004-12-22 2009-02-10 Ambrx Inc hormânio do crescimento humano modificado
JP4364274B2 (ja) * 2005-02-18 2009-11-11 富士通株式会社 干渉低減受信装置
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
US7711075B2 (en) 2005-11-15 2010-05-04 Tensorcomm Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7991088B2 (en) 2005-11-15 2011-08-02 Tommy Guess Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
EP1880524B1 (en) * 2005-04-21 2013-10-30 William Marsh Rice University Method and apparatus for compressive imaging device
US7271747B2 (en) * 2005-05-10 2007-09-18 Rice University Method and apparatus for distributed compressed sensing
WO2007038018A2 (en) * 2005-09-23 2007-04-05 Tensorcomm, Inc. Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7702048B2 (en) * 2005-11-15 2010-04-20 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7852902B2 (en) * 2005-09-30 2010-12-14 Telefonaktiebolaget L M Ericsson (Publ) Method of and apparatus for multi-path signal component combining
US7623602B2 (en) * 2005-11-15 2009-11-24 Tensorcomm, Inc. Iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
US20070110135A1 (en) * 2005-11-15 2007-05-17 Tommy Guess Iterative interference cancellation for MIMO-OFDM receivers
US8107549B2 (en) * 2005-11-30 2012-01-31 Qualcomm, Incorporated Multi-stage receiver for wireless communication
US7602838B2 (en) * 2005-12-22 2009-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Linear turbo equalization using despread values
JP4774306B2 (ja) * 2006-02-02 2011-09-14 富士通株式会社 干渉低減受信装置及びその方法
US8275023B2 (en) * 2006-02-13 2012-09-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for shared parameter estimation in a generalized rake receiver
CN100578954C (zh) * 2006-05-10 2010-01-06 华为技术有限公司 接收多径信号的方法、计算各径加权值的装置及rake接收机
US7688881B2 (en) * 2006-06-30 2010-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for interference estimation in a generalized RAKE receiver
US7751511B2 (en) * 2006-10-19 2010-07-06 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for selecting a subset of modeled impairment correlation terms for use in received signal processing
JP5180224B2 (ja) 2006-11-06 2013-04-10 クゥアルコム・インコーポレイテッド オンタイムシンボル干渉除去を備えるｍｉｍｏ検波
US7983208B2 (en) * 2007-01-31 2011-07-19 Telefonaktiebolaget Lm Ericsson (Publ) MMSE channel estimation in a communications receiver
WO2008109990A1 (en) * 2007-03-09 2008-09-18 The Governors Of The University Of Alberta A zonal uwb receiver and method
WO2008134870A1 (en) * 2007-05-04 2008-11-13 The Governors Of The University Of Alberta A p-order metric uwb receiver structure with improved performance in multiple access interference-plus-noise multipath channels
US8229044B2 (en) * 2007-06-14 2012-07-24 Telefonaktiebolaget Lm Ericsson (Publ) Efficient covariance computation by table lookup
US7822101B2 (en) * 2007-06-25 2010-10-26 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for interference suppression in a wireless communication receiver
US20090323777A1 (en) * 2008-06-26 2009-12-31 Yi-Pin Eric Wang Methods and Apparatus for Sharing Signal Correlation Data in a Receiver
US8295330B2 (en) * 2008-07-22 2012-10-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for communication signal processing based on mixed parametric and non-parametric estimation of impairment correlations
US8000655B2 (en) * 2008-12-19 2011-08-16 Telefonaktiebolaget L M Ericsson (Publ) Uplink multi-cell signal processing for interference suppression
US8566053B2 (en) * 2009-03-19 2013-10-22 William Marsh Rice University Method and apparatus for compressive parameter estimation and tracking
US8494098B2 (en) * 2009-05-04 2013-07-23 Qualcomm Incorporated Method and system for inter-cell interference cancellation
US8494029B2 (en) * 2009-05-04 2013-07-23 Qualcomm Incorporated Method and system for multi-user detection in the presence of multiple spreading factors
US8615030B2 (en) * 2009-05-04 2013-12-24 Qualcomm Incorporated Method and system for multi-user detection using two-stage processing
US8451963B2 (en) * 2009-06-09 2013-05-28 Qualcomm Incorporated Method and system for interference cancellation
US8582624B2 (en) 2010-10-01 2013-11-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for enhancing the accuracy of the estimated covariance matrix in wideband-CDMA systems
CN102664656B (zh) * 2012-04-18 2014-08-13 北京理工大学 基于结构化稀疏性的直扩信号压缩域联合同步与解调方法
WO2014006449A1 (en) * 2012-07-03 2014-01-09 Freescale Semiconductor, Inc. A communication device for wideband code division multiple access communication (w-cdma) system, a method for use therein and an associated semiconductor device
JP6070417B2 (ja) * 2013-05-29 2017-02-01 富士通株式会社 無線通信装置、重み係数演算方法、および重み係数演算プログラム
US9210106B2 (en) 2013-07-02 2015-12-08 Freescale Semiconductor, Inc. Communication device for wideband code division multiple access communication (W-CDMA) system, a method for use therein and an associated semiconductor device
CN106973023B (zh) * 2017-02-14 2019-10-01 中国科学院声学研究所 一种信号合成方法及系统
EP3402081A1 (en) * 2017-05-11 2018-11-14 Intel Corporation Techniques for determining unknown pilot signal powers in a receive signal
CN108366025B (zh) * 2018-01-22 2020-05-15 中国科学院声学研究所 一种信号合成方法及系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507841A1 (de) 1985-03-06 1986-09-11 Wolfgang 7320 Göppingen Paech Individuelle vorverzerrung von audiosignalen fuer lautsprecherboxen
US5812542A (en) 1996-03-18 1998-09-22 Motorola, Inc. Method for determining weighting coefficients in a CDMA radio receiver
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
US5574747A (en) 1995-01-04 1996-11-12 Interdigital Technology Corporation Spread spectrum adaptive power control system and method
US5615209A (en) 1995-07-26 1997-03-25 Ericsson Inc. Method and apparatus for CDMA signal orthogonalization
US5809020A (en) 1996-03-18 1998-09-15 Motorola, Inc. Method for adaptively adjusting weighting coefficients in a cDMA radio receiver
US6026115A (en) 1996-08-23 2000-02-15 Ntt Mobile Communications Network, Inc. Rake receiver
KR100230102B1 (ko) 1996-12-11 1999-11-15 구자홍 볼륨레벨에 따른 음성조정방법
JP2853742B2 (ja) * 1997-06-10 1999-02-03 日本電気株式会社 直接拡散／符号分割多重方式干渉除去受信装置
JP2924864B2 (ja) 1997-06-16 1999-07-26 日本電気株式会社 適応レイク受信方式
JP3274388B2 (ja) * 1997-07-25 2002-04-15 株式会社東芝 Ｒａｋｅ受信機とこのｒａｋｅ受信機を備えたスぺクトラム拡散通信装置
JPH1168619A (ja) 1997-08-20 1999-03-09 Matsushita Electric Ind Co Ltd ディジタル受信装置
US6301293B1 (en) 1998-08-04 2001-10-09 Agere Systems Guardian Corp. Detectors for CDMA systems
US6370183B1 (en) * 1998-10-26 2002-04-09 Nortel Networks Limited Predictive rake receiver for CDMA mobile radio systems

Also Published As

Publication number Publication date
HK1049929A1 (en) 2003-05-30
US6714585B1 (en) 2004-03-30
EP1197007B1 (en) 2004-07-28
CN1371551A (zh) 2002-09-25
WO2001001595A1 (en) 2001-01-04
IL147211A (en) 2007-02-11
AU4998900A (en) 2001-01-31
EP1197007A1 (en) 2002-04-17
ATE272272T1 (de) 2004-08-15
HK1049929B (zh) 2005-06-10
DE60012531T2 (de) 2005-08-04
DE60012531D1 (de) 2004-09-02
WO2001001595A8 (en) 2001-04-19
MY124218A (en) 2006-06-30
JP4464020B2 (ja) 2010-05-19
CN1173485C (zh) 2004-10-27
JP2003503879A (ja) 2003-01-28

Similar Documents

Publication Publication Date Title
IL147211A0 (en) Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics
AU4832700A (en) Multistep rake combining method and apparatus
JP2925463B2 (ja) マルチキャリア・スペクトル拡散信号変調／復調方法およびシステム
WO2002052743A3 (en) Apparatus and methods for finger delay selection in rake receivers
US5671221A (en) Receiving method and apparatus for use in a spread-spectrum communication system
US6333947B1 (en) Interference cancellation system and method and CDMA receiver including an interference cancellation circuit
US20050213529A1 (en) Channel estimation in a CDMA receiver
AU6394899A (en) Method and apparatus for transmitting and receiving variable rate data
AU7056500A (en) Apparatus and methods for receiving information using variable length accumulation searchers
ID30486A (id) Metode dan peralatan untuk penjejakan waktu
CA2317751A1 (en) Method and apparatus for increasing spectral efficiency of cdma systems using direct sequence spread spectrum signals
US7844292B2 (en) System and method for in-band control signaling using bandwidth distributed encoding
EP0745291A1 (en) Data transmission method, transmitter, and receiver
JP2941651B2 (ja) 移動通信方式
Ravindrababu et al. Performance comparison of spreading codes in linear multi user detectors for DS-CDMA system
Qin et al. Circular superposition spread-spectrum transmission for multiple-input multiple-output underwater acoustic communications
Poor et al. An analysis of some multiuser detectors in impulsive noise
Das et al. Hardware design issues for a mobile unit for next-generation CDMA systems
JP3926366B2 (ja) スペクトラム拡散レイク受信機
JPH0629946A (ja) スペクトラム拡散方式通信装置
JP2002084258A (ja) 通信装置
KR100475384B1 (ko) 레이크 수신기 및 그 신호 처리 방법
Jin et al. A new scheme for multiuser detection in DS-CDMA system
Kim Multi-user performance of direct-sequence CDMA using combined binary PPM/orthogonal modulation
Youn et al. A multi-carrier CDMA system using a concatenated orthogonal/PN spreading scheme

Legal Events

Date Code Title Description
FF Patent granted
KB Patent renewed