JP3880316B2 - ドップラー訂正されたスペクトラム拡散整合フィルタ - Google Patents

ドップラー訂正されたスペクトラム拡散整合フィルタ Download PDF

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Publication number
JP3880316B2
JP3880316B2 JP2000568197A JP2000568197A JP3880316B2 JP 3880316 B2 JP3880316 B2 JP 3880316B2 JP 2000568197 A JP2000568197 A JP 2000568197A JP 2000568197 A JP2000568197 A JP 2000568197A JP 3880316 B2 JP3880316 B2 JP 3880316B2
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complex
signal
code
circuit
value
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JP2002524907A5 (cg-RX-API-DMAC7.html
JP2002524907A (ja
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グローンメイヤー，スティーブン・エイ
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サーフ テクノロジー インコーポレイテッド
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22511396&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP3880316(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
JP2000568197A 1998-09-01 1999-09-01 ドップラー訂正されたスペクトラム拡散整合フィルタ Expired - Fee Related JP3880316B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/145,055 US6044105A (en) 1998-09-01 1998-09-01 Doppler corrected spread spectrum matched filter
US09/145,055 1998-09-01
PCT/US1999/020131 WO2000013332A1 (en) 1998-09-01 1999-09-01 Doppler corrected spread spectrum matched filter

Publications (3)

Publication Number Publication Date
JP2002524907A JP2002524907A (ja) 2002-08-06
JP2002524907A5 JP2002524907A5 (cg-RX-API-DMAC7.html) 2006-10-19
JP3880316B2 true JP3880316B2 (ja) 2007-02-14

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ID=22511396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000568197A Expired - Fee Related JP3880316B2 (ja) 1998-09-01 1999-09-01 ドップラー訂正されたスペクトラム拡散整合フィルタ

Country Status (4)

Country Link
US (1) US6044105A (cg-RX-API-DMAC7.html)
EP (1) EP1114524B1 (cg-RX-API-DMAC7.html)
JP (1) JP3880316B2 (cg-RX-API-DMAC7.html)
WO (1) WO2000013332A1 (cg-RX-API-DMAC7.html)

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US7711038B1 (en) 1998-09-01 2010-05-04 Sirf Technology, Inc. System and method for despreading in a spread spectrum matched filter
US7545854B1 (en) * 1998-09-01 2009-06-09 Sirf Technology, Inc. Doppler corrected spread spectrum matched filter
US6680969B1 (en) * 1999-03-22 2004-01-20 Ericsson, Inc. Methods for estimating doppler spreads including autocorrelation function hypotheses and related systems and receivers
US6546040B1 (en) * 1999-04-21 2003-04-08 Trimble Navigation Limited GPS receiver having improved signal acquisition at a low signal to noise ratio
US6718170B1 (en) * 1999-07-01 2004-04-06 Qualcomm Incorporated Dynamic allocation of microprocessor resources in a wireless communication device
US6532271B1 (en) * 1999-10-29 2003-03-11 Cadence Design Systems, Inc. Carrier recovery and doppler frequency estimation
US6429811B1 (en) 2000-02-15 2002-08-06 Motorola, Inc. Method and apparatus for compressing GPS satellite broadcast message information
US6850557B1 (en) * 2000-04-18 2005-02-01 Sirf Technology, Inc. Signal detector and method employing a coherent accumulation system to correlate non-uniform and disjoint sample segments
US7885314B1 (en) * 2000-05-02 2011-02-08 Kenneth Scott Walley Cancellation system and method for a wireless positioning system
US6329946B1 (en) * 2000-05-31 2001-12-11 Mitsubishi Denki Kabushiki Kaisha GPS position measuring system and GPS position measuring apparatus
JP2002217787A (ja) * 2000-11-17 2002-08-02 Hitachi Kokusai Electric Inc ディジタルフィルタ
US6724807B1 (en) * 2000-12-04 2004-04-20 Snaptrack Inc. Methods and apparatuses for processing of global positioning system signals with a matched filter
US7031377B2 (en) * 2001-01-26 2006-04-18 Agere Systems Inc. Receiver and low power digital filter therefor
WO2002063331A1 (en) * 2001-02-06 2002-08-15 Koninklijke Philips Electronics N.V. A method of despreading gps signals
US7200162B2 (en) * 2001-08-31 2007-04-03 Qualcomm, Incorporated Interpolation of channel search results
US7474994B2 (en) * 2001-12-14 2009-01-06 Qualcomm Incorporated System and method for wireless signal time of arrival
FI116179B (fi) * 2002-03-13 2005-09-30 Nokia Corp Menetelmä ja järjestelmä etenemisviiveen määrittämiseksi sekä elektroniikkalaite
US6788731B2 (en) * 2002-04-26 2004-09-07 Motorola, Inc. Flexible correlation and queueing in CDMA communication systems
US7190746B1 (en) * 2003-02-14 2007-03-13 Rockwell Collins, Inc. Multiple lobe dot product detector for M-code GPS receivers
US7209529B2 (en) * 2003-07-10 2007-04-24 Sandbridge Technologies, Inc. Doppler compensated receiver
EP1528797B1 (en) * 2003-10-31 2015-07-08 Canon Kabushiki Kaisha Image processing apparatus, image-taking system and image processing method
US8098765B1 (en) * 2004-02-23 2012-01-17 Sirf Technology, Inc. Reducing and sharing computations for GPS signal processing
US7359429B2 (en) * 2004-04-19 2008-04-15 Nokia Corporation Support of the determination of a correlation
US7486749B2 (en) * 2004-12-22 2009-02-03 Nokia Corporation Determination of a code phase
US7729457B2 (en) * 2005-07-25 2010-06-01 Mstar Semiconductor, Inc. Method of weak signal acquisition and associated apparatus
US7630430B2 (en) 2005-07-25 2009-12-08 Mstar Semiconductor, Inc. Method and apparatus for accelerating correlation processing of GPS signal
CN101278585A (zh) * 2005-09-30 2008-10-01 松下电器产业株式会社 无线通信移动台装置以及随机接入信道数据发送方法
DE602006010810D1 (de) * 2006-03-22 2010-01-14 Qualcomm Inc Breitband Frequenzdiskriminator und Funkortungsempfänger
US7903028B2 (en) * 2006-12-18 2011-03-08 Sirf Technology Holdings, Inc. Ephemeris download from weak signals
JP2010526997A (ja) 2007-05-10 2010-08-05 クゥアルコム・インコーポレイテッド Ｇｎｓｓ信号プロセッサ
US8705591B2 (en) * 2007-12-05 2014-04-22 Qualcomm Incorporated Global navigation receiver
CN103020507B (zh) * 2012-12-26 2016-05-11 广东威创视讯科技股份有限公司 一种登录方法及系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4894842A (en) * 1987-10-15 1990-01-16 The Charles Stark Draper Laboratory, Inc. Precorrelation digital spread spectrum receiver
US5390207A (en) * 1990-11-28 1995-02-14 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
US5623485A (en) * 1995-02-21 1997-04-22 Lucent Technologies Inc. Dual mode code division multiple access communication system and method
US5640431A (en) * 1995-03-10 1997-06-17 Motorola, Inc. Method and apparatus for offset frequency estimation for a coherent receiver
US5577025A (en) * 1995-06-30 1996-11-19 Qualcomm Incorporated Signal acquisition in a multi-user communication system using multiple walsh channels
WO1997014053A1 (en) * 1995-10-09 1997-04-17 Snaptrack, Inc. Improved gps receivers and garments containing gps receivers and methods for using these gps receivers
IL119752A0 (en) * 1996-12-04 1997-09-30 Israel State Asynchronous CDMA decorrelating detector

Also Published As

Publication number Publication date
US6044105A (en) 2000-03-28
EP1114524B1 (en) 2005-08-31
EP1114524A1 (en) 2001-07-11
JP2002524907A (ja) 2002-08-06
EP1114524A4 (en) 2002-07-10
WO2000013332A1 (en) 2000-03-09

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