DE69925657D1 - Zellularsystem, mobiles tragbares Gerät, Basisstation und Verfahren zur optimalen Pfadbestimmung - Google Patents

Zellularsystem, mobiles tragbares Gerät, Basisstation und Verfahren zur optimalen Pfadbestimmung

Info

Publication number
DE69925657D1
DE69925657D1 DE69925657T DE69925657T DE69925657D1 DE 69925657 D1 DE69925657 D1 DE 69925657D1 DE 69925657 T DE69925657 T DE 69925657T DE 69925657 T DE69925657 T DE 69925657T DE 69925657 D1 DE69925657 D1 DE 69925657D1
Authority
DE
Germany
Prior art keywords
base station
mobile device
cellular system
optimal path
portable mobile
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
DE69925657T
Other languages
English (en)
Other versions
DE69925657T2 (de
Inventor
Ohshima Manabu
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69925657D1 publication Critical patent/DE69925657D1/de
Publication of DE69925657T2 publication Critical patent/DE69925657T2/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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • 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
    • H04B1/7073—Synchronisation aspects
    • 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
    • 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)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radio Transmission System (AREA)
DE1999625657 1998-03-04 1999-03-04 Zellularsystem, Mobilgerät, Basisstation und Verfahren und Vorrichtung zum Erfassen eines optimalen Pfads Expired - Lifetime DE69925657T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5241498A JP2937994B1 (ja) 1998-03-04 1998-03-04 セルラーシステムと移動携帯機、基地局装置、及び最適パス検出方法とその装置
JP5241498 1998-03-04

Publications (2)

Publication Number Publication Date
DE69925657D1 true DE69925657D1 (de) 2005-07-14
DE69925657T2 DE69925657T2 (de) 2005-10-06

Family

ID=12914141

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999625657 Expired - Lifetime DE69925657T2 (de) 1998-03-04 1999-03-04 Zellularsystem, Mobilgerät, Basisstation und Verfahren und Vorrichtung zum Erfassen eines optimalen Pfads

Country Status (6)

Country Link
US (1) US6590888B1 (de)
EP (1) EP0940927B1 (de)
JP (1) JP2937994B1 (de)
CN (1) CN1111988C (de)
AU (1) AU756272B2 (de)
DE (1) DE69925657T2 (de)

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JP3323453B2 (ja) * 1999-02-09 2002-09-09 松下電器産業株式会社 Ｃｄｍａ受信装置及びｃｄｍａ受信方法
KR20010003804A (ko) * 1999-06-25 2001-01-15 윤종용 부호분할다중접속 통신단말기에서 메모리를 이용한 탐색장치및방법
JP3397744B2 (ja) * 2000-03-28 2003-04-21 松下電器産業株式会社 通信装置及びｃｄｍａ通信方法
JP2001285129A (ja) 2000-03-29 2001-10-12 Nec Corp Ｃｄｍａ復調回路及び復調方法
JP2001326584A (ja) 2000-05-18 2001-11-22 Nec Corp パス検出方式と受信装置
US7065055B1 (en) * 2000-05-26 2006-06-20 Telefonaktiebolaget Lm Ericsson (Publ) Zero delay interference cancellation
US7233615B1 (en) * 2000-07-03 2007-06-19 Mitsubishi Denki Kabushiki Kaisha Timing correcting device and timing correcting method
JP2002026767A (ja) 2000-07-04 2002-01-25 Nec Corp Ｃｄｍａ受信装置及びパス検出方法
CN1199372C (zh) * 2000-12-04 2005-04-27 三菱电机株式会社 合成接收方法及合成接收装置
US6977918B2 (en) * 2001-06-29 2005-12-20 Nokia Corp. Method and apparatus for processing a signal received in a high data rate communication system
US7158559B2 (en) * 2002-01-15 2007-01-02 Tensor Comm, Inc. Serial cancellation receiver design for a coded signal processing engine
US8085889B1 (en) 2005-04-11 2011-12-27 Rambus Inc. Methods for managing alignment and latency in interference cancellation
US7260506B2 (en) * 2001-11-19 2007-08-21 Tensorcomm, Inc. Orthogonalization and directional filtering
US20050101277A1 (en) * 2001-11-19 2005-05-12 Narayan Anand P. Gain control for interference cancellation
US7394879B2 (en) * 2001-11-19 2008-07-01 Tensorcomm, Inc. Systems and methods for parallel signal cancellation
US7039136B2 (en) * 2001-11-19 2006-05-02 Tensorcomm, Inc. Interference cancellation in a signal
US7787518B2 (en) * 2002-09-23 2010-08-31 Rambus Inc. Method and apparatus for selectively applying interference cancellation in spread spectrum systems
US20040208238A1 (en) * 2002-06-25 2004-10-21 Thomas John K. Systems and methods for location estimation in spread spectrum communication systems
US20050180364A1 (en) * 2002-09-20 2005-08-18 Vijay Nagarajan Construction of projection operators for interference cancellation
US7577186B2 (en) * 2002-09-20 2009-08-18 Tensorcomm, Inc Interference matrix construction
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US7787572B2 (en) * 2005-04-07 2010-08-31 Rambus Inc. Advanced signal processors for interference cancellation in baseband receivers
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US7463609B2 (en) * 2005-07-29 2008-12-09 Tensorcomm, Inc Interference cancellation within wireless transceivers
US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US20050123080A1 (en) * 2002-11-15 2005-06-09 Narayan Anand P. Systems and methods for serial cancellation
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
JP2006502679A (ja) * 2002-10-02 2006-01-19 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 低レイテンシ・ラジオ／ベースバンド・インターフェイス・プロトコル
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
CN1723627A (zh) 2002-10-15 2006-01-18 张量通讯公司 用于信道幅度估计和干扰矢量构造的方法和装置
WO2004042948A1 (en) * 2002-10-31 2004-05-21 Tensorcomm, Incorporated Systems and methods for reducing interference in cdma systems
JP4407830B2 (ja) * 2003-06-30 2010-02-03 日本電気株式会社 複数の送受信アンテナを用いる符号拡散無線通信における拡散符号割当て方法及びそれを用いた符号拡散無線通信システム
JP4238987B2 (ja) * 2003-10-08 2009-03-18 日本電気株式会社 Ｃｄｍａ受信方法及び装置
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
US20050169354A1 (en) * 2004-01-23 2005-08-04 Olson Eric S. Systems and methods for searching interference canceled data
US20060125689A1 (en) * 2004-12-10 2006-06-15 Narayan Anand P Interference cancellation in a receive diversity system
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
JP4563857B2 (ja) * 2005-04-12 2010-10-13 三菱電機株式会社 動画像用電子透かし検出のための時間同期回復方法及び装置
JP2008124942A (ja) * 2006-11-15 2008-05-29 Nec Corp 無線通信システム、無線通信装置及びそれらに用いる有効パス検出方法
CN101488798B (zh) * 2008-01-14 2013-05-15 电信科学技术研究院 定时测量方法、系统及装置
CN102035932B (zh) * 2009-09-24 2013-02-13 鸿富锦精密工业（深圳）有限公司 一种具有最大功率校正的移动电话
DE102010046860B4 (de) * 2010-09-29 2018-05-30 Texas Instruments Deutschland Gmbh Elektronische Vorrichtung und Verfahren für Spreizspektrumtakt-Modulation (SSC-Modulation)
JP5695399B2 (ja) * 2010-11-26 2015-04-01 京セラ株式会社 通信装置および無線通信方法
US8638888B2 (en) * 2011-07-21 2014-01-28 Infineon Technologies Ag Analog correlation technique for ultra low power receivers
FR3012275B1 (fr) * 2013-10-18 2015-12-25 Commissariat Energie Atomique Recepteur uwb a fonctionnement intermittent
US9966965B2 (en) * 2016-06-10 2018-05-08 Silicon Laboratories Inc. Apparatus for low power signal generator and associated methods

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JPH0799815B2 (ja) 1991-05-23 1995-10-25 防衛庁技術研究本部長 無線通信網の同期方式
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
JPH08340316A (ja) 1995-06-12 1996-12-24 Sanyo Electric Co Ltd スペクトル拡散受信装置
JP3745430B2 (ja) 1995-12-22 2006-02-15 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａマルチパス・サーチ方法及びｃｄｍａ信号受信装置
JPH09261128A (ja) 1996-03-22 1997-10-03 Matsushita Electric Ind Co Ltd スペクトル拡散通信機
US5930288A (en) * 1996-05-06 1999-07-27 Motorola, Inc. Time-shared lock indicator circuit and method for power control and traffic channel decoding in a radio receiver
US5950131A (en) * 1996-10-29 1999-09-07 Motorola, Inc. Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone
JPH10200505A (ja) * 1997-01-06 1998-07-31 Sony Corp 受信装置及び受信方法、並びに無線システムの端末装置
JPH10200506A (ja) * 1997-01-06 1998-07-31 Sony Corp 受信装置及び受信方法、並びに無線システムの端末装置
US6078611A (en) * 1997-09-16 2000-06-20 Motorola, Inc. Rake receiver and finger management method for spread spectrum communication
US6072807A (en) * 1997-12-09 2000-06-06 Lucent Technologies, Inc. Searching for signals to assign to the fingers of a rake receiver
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
SG90052A1 (en) * 1999-05-28 2002-07-23 Oki Techno Ct Singapore Pte A cdma receiver

Also Published As

Publication number Publication date
JPH11251962A (ja) 1999-09-17
AU756272B2 (en) 2003-01-09
US6590888B1 (en) 2003-07-08
EP0940927A2 (de) 1999-09-08
DE69925657T2 (de) 2005-10-06
AU1856399A (en) 1999-09-16
EP0940927B1 (de) 2005-06-08
JP2937994B1 (ja) 1999-08-23
EP0940927A3 (de) 2003-08-13
CN1111988C (zh) 2003-06-18
CN1242655A (zh) 2000-01-26

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Legal Events

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