HK1055516A1 - Method and apparatus for detecting presence or absence of pilot signals in a digital cellular mobilecommunication unit. - Google Patents

Method and apparatus for detecting presence or absence of pilot signals in a digital cellular mobilecommunication unit.

Info

Publication number
HK1055516A1
HK1055516A1 HK03107654A HK03107654A HK1055516A1 HK 1055516 A1 HK1055516 A1 HK 1055516A1 HK 03107654 A HK03107654 A HK 03107654A HK 03107654 A HK03107654 A HK 03107654A HK 1055516 A1 HK1055516 A1 HK 1055516A1
Authority
HK
Hong Kong
Prior art keywords
mobilecommunication
absence
unit
pilot signals
digital cellular
Prior art date
Application number
HK03107654A
Other languages
English (en)
Inventor
Charles E Wheatley Iii
John E Maloney
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of HK1055516A1 publication Critical patent/HK1055516A1/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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H04B1/709—Correlator structure
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
HK03107654A 1999-11-29 2003-10-23 Method and apparatus for detecting presence or absence of pilot signals in a digital cellular mobilecommunication unit. HK1055516A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/450,265 US6760366B1 (en) 1999-11-29 1999-11-29 Method and apparatus for pilot search using a matched filter
PCT/US2000/032411 WO2001039388A1 (en) 1999-11-29 2000-11-28 Method and apparatus for a pilot search using a matched filter

Publications (1)

Publication Number Publication Date
HK1055516A1 true HK1055516A1 (en) 2004-01-09

Family

ID=23787407

Family Applications (1)

Application Number Title Priority Date Filing Date
HK03107654A HK1055516A1 (en) 1999-11-29 2003-10-23 Method and apparatus for detecting presence or absence of pilot signals in a digital cellular mobilecommunication unit.

Country Status (10)

Country Link
US (2) US6760366B1 (xx)
EP (2) EP1234382A1 (xx)
JP (1) JP4790958B2 (xx)
KR (1) KR100782605B1 (xx)
CN (2) CN1208909C (xx)
AU (1) AU777742B2 (xx)
BR (1) BR0015954A (xx)
HK (1) HK1055516A1 (xx)
TW (1) TW498630B (xx)
WO (1) WO2001039388A1 (xx)

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US6363060B1 (en) * 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
KR100689033B1 (ko) * 2001-02-02 2007-03-08 삼성전자주식회사 데이터 슬라이서 및 이를 적용한 알에프 수신기
US20050148349A1 (en) * 2003-12-19 2005-07-07 Padmaja Putcha Cell selection on transitioning from dedicated mode in wireless communications devices
CN100341375C (zh) * 2004-05-31 2007-10-03 华为技术有限公司 一种小区射频发射通道时延测量装置及方法
US8086241B2 (en) * 2004-11-18 2011-12-27 Mediatek Incorporation Handoff methods, and devices utilizing same
US8223623B2 (en) * 2005-03-28 2012-07-17 Qualcomm Incorporated Timing and frequency acquisition for OFDM systems
DE102005041455A1 (de) * 2005-08-31 2007-03-15 Abb Patent Gmbh Automatisierungstechnische Einrichtung
DE102005043485A1 (de) 2005-09-13 2007-03-15 Abb Patent Gmbh Automatisierungstechnische Einrichtung
DE102005043481A1 (de) * 2005-09-13 2007-03-15 Abb Patent Gmbh Automatisierungstechnische Einrichtung
DE102005043482A1 (de) * 2005-09-13 2007-03-15 Abb Patent Gmbh Automatisierungstechnische Einrichtung
DE102005043479A1 (de) * 2005-09-13 2007-03-15 Abb Patent Gmbh Automatisierungstechnische Einrichtung
US7680075B2 (en) * 2006-05-17 2010-03-16 Alcatel-Lucent Usa Inc. Identification of base stations
US8619909B2 (en) * 2006-06-20 2013-12-31 Southwest Research Institute Signal detector using matched filter for training signal detection
EP1876728B1 (fr) * 2006-07-07 2014-01-01 E-Blink Procédé de synchronisation de deux dispositifs électroniques d'une liaison sans fil, notamment d'un réseau de téléphonie mobile et système de mise en oeuvre de ce procédé
US7672415B1 (en) * 2006-09-28 2010-03-02 L-3 Communications, Corp. System and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal
US8571088B2 (en) * 2007-11-12 2013-10-29 Qualcomm Incorporated Suppression of multipath effects for received SPS signals
US8842785B2 (en) * 2008-07-01 2014-09-23 Telefonaktiebolaget Lm Ericsson (Publ) Soft scaling method and apparatus
JP5280450B2 (ja) * 2008-08-07 2013-09-04 株式会社日立メディコ Ｘ線ｃｔ画像形成方法及びそれを用いたｘ線ｃｔ装置
FR2956934B1 (fr) 2010-02-26 2012-09-28 Blink E Procede et dispositif d'emission/reception de signaux electromagnetiques recus/emis sur une ou plusieurs premieres bandes de frequences.
EP2405586B1 (en) * 2010-07-06 2018-08-22 Keysight Technologies Singapore (Holdings) Pte.Ltd Apparatus and method for pilot detection
US8768359B2 (en) 2010-08-20 2014-07-01 Qualcomm Incorporated Sample selection for secondary synchronization signal (SSS) detection
FR2990315B1 (fr) 2012-05-04 2014-06-13 Blink E Procede de transmission d'informations entre une unite emettrice et une unite receptrice
US8879679B2 (en) * 2012-08-27 2014-11-04 Motorola Mobility Llc Frequency offset compensation improvement for a long term evolution (LTE) searcher

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US4401307A (en) 1981-09-10 1983-08-30 Jacques Dechavanne Seal, scraper, and guide for piston rod of single-action cylinder
US4550414A (en) * 1983-04-12 1985-10-29 Charles Stark Draper Laboratory, Inc. Spread spectrum adaptive code tracker
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5109390A (en) 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5031193A (en) * 1989-11-13 1991-07-09 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals
US5103459B1 (en) 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5490165A (en) 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
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JP2705623B2 (ja) * 1995-03-22 1998-01-28 日本電気株式会社 ダイバーシチ送受信方法及び送受信機
US5627855A (en) 1995-05-25 1997-05-06 Golden Bridge Technology, Inc. Programmable two-part matched filter for spread spectrum
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US5719898A (en) 1995-09-29 1998-02-17 Golden Bridge Technology, Inc. Fuzzy-logic spread-spectrum adaptive power control
JPH09116475A (ja) * 1995-10-23 1997-05-02 Nec Corp 時間ダイバーシチ送受信システム
US5640425A (en) 1995-12-26 1997-06-17 Golden Bridge Technology, Inc. Fast-acting costas loop
US5864578A (en) 1996-04-29 1999-01-26 Golden Bridge Technology, Inc. Matched filter-based handoff method and apparatus
JPH09321667A (ja) * 1996-05-29 1997-12-12 Yozan:Kk Ｃｄｍａ通信システム用受信機
US5862133A (en) * 1996-08-02 1999-01-19 Golden Bridge Technology Packet-switched spread-spectrum system
US6067292A (en) * 1996-08-20 2000-05-23 Lucent Technologies Inc Pilot interference cancellation for a coherent wireless code division multiple access receiver
US5742637A (en) 1996-08-20 1998-04-21 Golden Bridge Technology, Inc. Fast phase estimation in digital communication systems
US5715276A (en) 1996-08-22 1998-02-03 Golden Bridge Technology, Inc. Symbol-matched filter having a low silicon and power requirement
JP3376224B2 (ja) 1996-10-23 2003-02-10 株式会社エヌ・ティ・ティ・ドコモ Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機
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
US5784466A (en) * 1997-01-16 1998-07-21 Ford Motor Company Co-channel interference detector
JP3751419B2 (ja) * 1997-06-16 2006-03-01 松下電器産業株式会社 マッチドフィルタおよび同期方法
US5991330A (en) 1997-06-27 1999-11-23 Telefonaktiebolaget L M Ericsson (Pub1) Mobile Station synchronization within a spread spectrum communication systems
JPH11150523A (ja) * 1997-11-17 1999-06-02 Oki Electric Ind Co Ltd スペクトラム拡散送信装置、スペクトラム拡散受信装置及びスペクトラム拡散通信システム
US6160803A (en) * 1998-01-12 2000-12-12 Golden Bridge Technology, Inc. High processing gain spread spectrum TDMA system and method
US6134440A (en) * 1998-01-26 2000-10-17 Qualcomm Inc. Method and apparatus for performing mobile station assisted hard handoff using off line searching
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US6266361B1 (en) * 1998-07-21 2001-07-24 Chung-Shan Institute Of Science And Technology Method and architecture for correcting carrier frequency offset and spreading code timing offset in a direct sequence spread spectrum communication system
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Also Published As

Publication number Publication date
KR100782605B1 (ko) 2007-12-06
EP1234382A1 (en) 2002-08-28
AU1805401A (en) 2001-06-04
CN1815903A (zh) 2006-08-09
JP2003521142A (ja) 2003-07-08
AU777742B2 (en) 2004-10-28
KR20020053093A (ko) 2002-07-04
WO2001039388A1 (en) 2001-05-31
JP4790958B2 (ja) 2011-10-12
CN1208909C (zh) 2005-06-29
CN1433593A (zh) 2003-07-30
BR0015954A (pt) 2003-07-15
EP2259437A2 (en) 2010-12-08
TW498630B (en) 2002-08-11
CN1815903B (zh) 2014-08-20
US20040146126A1 (en) 2004-07-29
US6760366B1 (en) 2004-07-06
EP2259437A3 (en) 2014-06-04
US7130334B2 (en) 2006-10-31

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20111128