DE60022901D1 - Starke signalunterdrückung um die verarbeitung von schwachen spreizspektrumsignalen zu verbessern - Google Patents

Starke signalunterdrückung um die verarbeitung von schwachen spreizspektrumsignalen zu verbessern

Info

Publication number
DE60022901D1
DE60022901D1 DE60022901T DE60022901T DE60022901D1 DE 60022901 D1 DE60022901 D1 DE 60022901D1 DE 60022901 T DE60022901 T DE 60022901T DE 60022901 T DE60022901 T DE 60022901T DE 60022901 D1 DE60022901 D1 DE 60022901D1
Authority
DE
Germany
Prior art keywords
signal
weak
strong signal
strong
predicted
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
DE60022901T
Other languages
English (en)
Other versions
DE60022901T2 (de
Inventor
P Norman
R Cahn
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.)
CSR Technology Inc
Original Assignee
Sirf Technology 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 Sirf Technology Inc filed Critical Sirf Technology Inc
Application granted granted Critical
Publication of DE60022901D1 publication Critical patent/DE60022901D1/de
Publication of DE60022901T2 publication Critical patent/DE60022901T2/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
    • 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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/246—Acquisition or tracking or demodulation of signals transmitted by the system involving long acquisition integration times, extended snapshots of signals or methods specifically directed towards weak signal acquisition
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
DE60022901T 1999-12-14 2000-11-14 Starke signalunterdrückung um die verarbeitung von schwachen spreizspektrumsignalen zu verbessern Expired - Lifetime DE60022901T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/461,123 US6282231B1 (en) 1999-12-14 1999-12-14 Strong signal cancellation to enhance processing of weak spread spectrum signal
US461123 1999-12-14
PCT/US2000/042171 WO2001047171A2 (en) 1999-12-14 2000-11-14 Strong signal cancellation to enhance processing of weak spread spectrum signal

Publications (2)

Publication Number Publication Date
DE60022901D1 true DE60022901D1 (de) 2006-02-09
DE60022901T2 DE60022901T2 (de) 2006-06-29

Family

ID=23831315

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60022901T Expired - Lifetime DE60022901T2 (de) 1999-12-14 2000-11-14 Starke signalunterdrückung um die verarbeitung von schwachen spreizspektrumsignalen zu verbessern

Country Status (9)

Country Link
US (3) US6282231B1 (de)
EP (1) EP1238485B1 (de)
JP (1) JP4738692B2 (de)
KR (1) KR100676780B1 (de)
CN (1) CN1409904A (de)
AT (1) ATE305677T1 (de)
AU (1) AU4707801A (de)
DE (1) DE60022901T2 (de)
WO (1) WO2001047171A2 (de)

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US7116704B2 (en) 2006-10-03
EP1238485B1 (de) 2005-09-28
AU4707801A (en) 2001-07-03
US6707843B2 (en) 2004-03-16
JP2003518819A (ja) 2003-06-10
WO2001047171A3 (en) 2001-11-15
US6282231B1 (en) 2001-08-28
KR20020068055A (ko) 2002-08-24
DE60022901T2 (de) 2006-06-29
KR100676780B1 (ko) 2007-02-01
US20050032513A1 (en) 2005-02-10
EP1238485A4 (de) 2003-05-07
US20010046256A1 (en) 2001-11-29
JP4738692B2 (ja) 2011-08-03
EP1238485A2 (de) 2002-09-11
CN1409904A (zh) 2003-04-09
ATE305677T1 (de) 2005-10-15
WO2001047171A2 (en) 2001-06-28

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