DE4241882A1 - - Google Patents

Info

Publication number
DE4241882A1
DE4241882A1 DE4241882A DE4241882A DE4241882A1 DE 4241882 A1 DE4241882 A1 DE 4241882A1 DE 4241882 A DE4241882 A DE 4241882A DE 4241882 A DE4241882 A DE 4241882A DE 4241882 A1 DE4241882 A1 DE 4241882A1
Authority
DE
Germany
Prior art keywords
signal
weighting
digital
correlators
output
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.)
Withdrawn
Application number
DE4241882A
Other languages
German (de)
English (en)
Inventor
Noriyuki Hamao
Masahiro Hamatsu
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
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
Priority claimed from JP3352018A external-priority patent/JPH06197094A/ja
Priority claimed from JP4084666A external-priority patent/JPH05252142A/ja
Application filed by Clarion Co Ltd filed Critical Clarion Co Ltd
Publication of DE4241882A1 publication Critical patent/DE4241882A1/de
Withdrawn legal-status Critical Current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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • 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
DE4241882A 1991-12-13 1992-12-11 Withdrawn DE4241882A1 (US07190941-20070313-P00001.png)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3352018A JPH06197094A (ja) 1991-12-13 1991-12-13 ディジタルマッチドフィルタ
JP4084666A JPH05252142A (ja) 1992-03-06 1992-03-06 ディジタルマッチドフィルタ

Publications (1)

Publication Number Publication Date
DE4241882A1 true DE4241882A1 (US07190941-20070313-P00001.png) 1993-06-17

Family

ID=26425663

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4241882A Withdrawn DE4241882A1 (US07190941-20070313-P00001.png) 1991-12-13 1992-12-11

Country Status (2)

Country Link
US (1) US5293398A (US07190941-20070313-P00001.png)
DE (1) DE4241882A1 (US07190941-20070313-P00001.png)

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US5432813A (en) * 1993-12-28 1995-07-11 Unisys Corporation Parallel processing based digital matched filter and error detector for a digital demodulator
US5521946A (en) * 1994-01-07 1996-05-28 The 3Do Company Multi-phase filter/DAC
JP2807568B2 (ja) * 1994-02-10 1998-10-08 エヌ・ティ・ティ移動通信網株式会社 適応形スペクトラム拡散受信機
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US5812613A (en) * 1995-03-20 1998-09-22 Rockwell International Corporation Bitwise soft decision symbol decoder
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US5946344A (en) * 1997-04-07 1999-08-31 Intermec Ip Corp. Multiple-rate direct sequence architecture utilizing a fixed chipping rate and variable spreading code lengths
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
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JP2870534B1 (ja) * 1998-01-14 1999-03-17 日本電気株式会社 マッチドフィルタおよびｃｄｍａ受信機
US6327471B1 (en) 1998-02-19 2001-12-04 Conexant Systems, Inc. Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff
US6226336B1 (en) 1998-02-20 2001-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for detecting a frequency synchronization signal
US6348744B1 (en) 1998-04-14 2002-02-19 Conexant Systems, Inc. Integrated power management module
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US7545854B1 (en) * 1998-09-01 2009-06-09 Sirf Technology, Inc. Doppler corrected spread spectrum matched filter
US7711038B1 (en) 1998-09-01 2010-05-04 Sirf Technology, Inc. System and method for despreading in a spread spectrum matched filter
US6693953B2 (en) 1998-09-30 2004-02-17 Skyworks Solutions, Inc. Adaptive wireless communication receiver
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6343094B1 (en) 1999-01-22 2002-01-29 Sharp Laboratories Of America, Inc. Spread spectrum signal receiving method and apparatus for CDMA cellular communication
US6606349B1 (en) 1999-02-04 2003-08-12 Sirf Technology, Inc. Spread spectrum receiver performance improvement
US6448925B1 (en) 1999-02-04 2002-09-10 Conexant Systems, Inc. Jamming detection and blanking for GPS receivers
US6038271A (en) * 1999-03-02 2000-03-14 Harris Corporation Correlator with cascade data paths to facilitate expansion of correlator length
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6577271B1 (en) 1999-03-30 2003-06-10 Sirf Technology, Inc Signal detector employing coherent integration
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US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) * 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
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US6351486B1 (en) 1999-05-25 2002-02-26 Conexant Systems, Inc. Accelerated selection of a base station in a wireless communication system
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US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US6952440B1 (en) 2000-04-18 2005-10-04 Sirf Technology, Inc. Signal detector employing a Doppler phase correction system
US6931055B1 (en) 2000-04-18 2005-08-16 Sirf Technology, Inc. Signal detector employing a doppler phase correction system
US6714158B1 (en) 2000-04-18 2004-03-30 Sirf Technology, Inc. Method and system for data detection in a global positioning system satellite receiver
US6788655B1 (en) 2000-04-18 2004-09-07 Sirf Technology, Inc. Personal communications device with ratio counter
US7885314B1 (en) 2000-05-02 2011-02-08 Kenneth Scott Walley Cancellation system and method for a wireless positioning system
US6778136B2 (en) * 2001-12-13 2004-08-17 Sirf Technology, Inc. Fast acquisition of GPS signal
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7567636B2 (en) * 2001-05-18 2009-07-28 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7006556B2 (en) 2001-05-18 2006-02-28 Global Locate, Inc. Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference
US7769076B2 (en) 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US6819707B2 (en) * 2001-05-18 2004-11-16 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7995682B2 (en) * 2001-05-18 2011-08-09 Broadcom Corporation Method and apparatus for performing signal processing using historical correlation data
US6891880B2 (en) * 2001-05-18 2005-05-10 Global Locate, Inc. Method and apparatus for performing signal correlation
US7190712B2 (en) * 2001-05-18 2007-03-13 Global Locate, Inc Method and apparatus for performing signal correlation
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7106787B2 (en) * 2001-11-28 2006-09-12 Broadcom Corporation Acquisition matched filter for W-CDMA systems providing frequency offset robustness
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
TWI280690B (en) * 2003-03-18 2007-05-01 Tdk Corp Electronic device for wireless communications and reflector device for wireless communication cards
US20050209762A1 (en) * 2004-03-18 2005-09-22 Ford Global Technologies, Llc Method and apparatus for controlling a vehicle using an object detection system and brake-steer
KR100667552B1 (ko) * 2004-10-01 2007-01-12 삼성전자주식회사 정합필터 및 그에 의한 상호상관 수행방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220635A (ja) * 1984-04-17 1985-11-05 Clarion Co Ltd スペクトラム拡散送受信機
EP0472752B1 (de) * 1990-08-28 1995-10-18 Deutsche ITT Industries GmbH Fernbedienungseinrichtung mit einer Spreizcode-Übertragungsstrecke
US5210770A (en) * 1991-09-27 1993-05-11 Lockheed Missiles & Space Company, Inc. Multiple-signal spread-spectrum transceiver
US5237586A (en) * 1992-03-25 1993-08-17 Ericsson-Ge Mobile Communications Holding, Inc. Rake receiver with selective ray combining

Also Published As

Publication number Publication date
US5293398A (en) 1994-03-08

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee