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HK1061612A1 - Cancellation of pilot and unwanted traffic signals in a cdma system - Google Patents

Cancellation of pilot and unwanted traffic signals in a cdma system Download PDF

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Publication number
HK1061612A1
HK1061612A1 HK04104404A HK04104404A HK1061612A1 HK 1061612 A1 HK1061612 A1 HK 1061612A1 HK 04104404 A HK04104404 A HK 04104404A HK 04104404 A HK04104404 A HK 04104404A HK 1061612 A1 HK1061612 A1 HK 1061612A1
Authority
HK
Hong Kong
Prior art keywords
signal
output
desired traffic
global pilot
traffic
Prior art date
Application number
HK04104404A
Other languages
English (en)
French (fr)
Chinese (zh)
Other versions
HK1061612B (en
Inventor
Fatih Ozluturk
Original Assignee
Interdigital Technology Corporation
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 Interdigital Technology Corporation filed Critical Interdigital Technology Corporation
Publication of HK1061612A1 publication Critical patent/HK1061612A1/en
Publication of HK1061612B publication Critical patent/HK1061612B/en

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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • 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
    • 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
    • H04B1/71075—Parallel interference cancellation
    • 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
    • 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)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Traffic Control Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Circuits Of Receivers In General (AREA)
  • Dc Digital Transmission (AREA)
  • Selective Calling Equipment (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Claims (2)

  1. Löschvorrichtung (61) für globale Pilotsignale, zur Verwendung in einem Empfänger, der dazu ausgelegt ist, Kommunikationssignale von einem Sender über eine CDMA-Luftschnittstelle zu empfangen, wobei die Löschvorrichtung vor dem Decodieren das globale Pilotsignal aus einem gewünschten Verkehrssignal beseitigt, dadurch gekennzeichnet, dass die Löschvorrichtung umfasst:
    einen Eingang (63) zum Empfangen der Kommunikationssignale, und einen Systemausgang (Oadd);
    wobei der Eingang mit einer Entspreizungsvorrichtung (65) für globale Pilotsignale und einer Entspreizungsvorrichtung (91) für gewünschte Verkehrssignale, die jeweils einen addierten Ausgang haben verbunden ist, eine Kreuzkorrelationseinrichtung für gewünschte Verkehrssignale und globale Pilotsignale;
    wobei der Ausgang (Oad1) der Entspreizungsvorrichtung (65) für globale Pilotsignale mit einer Pilotsignalstärkenbestimmungseinrichtung gekoppelt ist, wobei die Bestimmungseinrichtung einen Ausgang (Opm) hat;
    wobei der Pilotsignalstärkenbestimmungseinrichtungsausgang (Oad2) mit dem Kreuzkorrelationseinrichtungsausgang (Oad2) multipliziert wird, wobei die Kreuzkorrelationseinrichtung umfasst:
    einen Codegenerator für globale Pilotsignale;
    einen Konjugiert-Komplex-Codegenerator für gewünschte Verkehrssignale;
    einen Mischer zum Kreuzkorrelieren des Codes globaler Pilotsignale und des konjugiert komplexen Codes gewünschter Verkehrssignale; und
    einen Addier- und Ausgabeprozessor zur Summenbildung des Kreuzkorrelationsprodukts über die Zeit; und
    wobei das multiplizierte Produkt, das von einem addierten Ausgang (Oad3) des Ausgangs der Entspreizungseinrichtung (91) für gewünschte Verkehrssignale subtrahiert wird, das vom globalen Pilotsignal befreite gewünschte Verkehrssignal ausgibt (Oadd).
  2. Löschvorrichtung (61) nach Anspruch 1, für globale Pilotsignale, wobei die Einrichtung zum Ableiten der Stärke von globalen Pilotsignalen darüber hinaus umfasst:
    ein Tiefpassfilter (75) mit einem Ausgang (Olpf); und
    einen mit dem Tiefpassfilter (75) gekoppelten Prozessor (77), der die Stärke (Opm) des globalen Pilotsignals ableitet und ausgibt.
HK04104404.8A 1998-10-20 2001-12-21 Cancellation of pilot and unwanted traffic signals in a cdma system HK1061612B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US175174 1998-10-20
US09/175,174 US6498784B1 (en) 1998-10-20 1998-10-20 Cancellation of pilot and traffic signals

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
HK01108994.8A Addition HK1038450B (en) 1998-10-20 1999-01-27 Cancellation of pilot and unwanted traffic signals in a cdma system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
HK01108994.8A Division HK1038450B (en) 1998-10-20 1999-01-27 Cancellation of pilot and unwanted traffic signals in a cdma system

Publications (2)

Publication Number Publication Date
HK1061612A1 true HK1061612A1 (en) 2004-09-24
HK1061612B HK1061612B (en) 2009-03-06

Family

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Also Published As

Publication number Publication date
AU2003257532B8 (en) 2005-12-22
HK1063111A1 (en) 2004-12-10
US20130128928A1 (en) 2013-05-23
CA2347207C (en) 2007-03-06
AU2480199A (en) 2000-05-08
IL206123A0 (en) 2010-11-30
IL175551A0 (en) 2006-09-05
IL142554A (en) 2006-09-05
KR20010080255A (ko) 2001-08-22
EA200100371A1 (ru) 2001-10-22
EA200501109A1 (ru) 2005-12-29
CN100583665C (zh) 2010-01-20
US8594157B2 (en) 2013-11-26
EA007355B1 (ru) 2006-10-27
DE69941098D1 (de) 2009-08-20
EP1376889A3 (de) 2005-02-02
EP1376888B1 (de) 2008-05-21
US6498784B1 (en) 2002-12-24
DK1123584T3 (da) 2004-08-30
JP3527204B2 (ja) 2004-05-17
NO325092B1 (no) 2008-02-04
AU2008243149B2 (en) 2010-09-09
JP2004120782A (ja) 2004-04-15
US8369385B2 (en) 2013-02-05
CN1251417C (zh) 2006-04-12
ATE396549T1 (de) 2008-06-15
EP1376888A2 (de) 2004-01-02
EA006354B1 (ru) 2005-12-29
NO323536B1 (no) 2007-06-04
US20060034218A1 (en) 2006-02-16
DE69938796D1 (de) 2008-07-03
US6950411B2 (en) 2005-09-27
CN101018073A (zh) 2007-08-15
AU2006200879B2 (en) 2008-08-07
DE1123584T1 (de) 2001-10-25
BR9914658A (pt) 2001-07-17
CN1324521A (zh) 2001-11-28
ES2307857T3 (es) 2008-12-01
EP2088682A2 (de) 2009-08-12
US7751465B2 (en) 2010-07-06
JP4309388B2 (ja) 2009-08-05
JP2007312418A (ja) 2007-11-29
EA200500247A1 (ru) 2005-06-30
IL175551A (en) 2010-11-30
US20030035404A1 (en) 2003-02-20
WO2000024135A1 (en) 2000-04-27
JP4008407B2 (ja) 2007-11-14
EP1123584A1 (de) 2001-08-16
JP2006094540A (ja) 2006-04-06
JP4286802B2 (ja) 2009-07-01
ES2221356T3 (es) 2004-12-16
AU2008243149A1 (en) 2008-11-27
JP2002528950A (ja) 2002-09-03
JP2005229638A (ja) 2005-08-25
DK1376889T3 (da) 2009-11-09
SG141427A1 (en) 2008-04-28
CA2347207A1 (en) 2000-04-27
AU764714B2 (en) 2003-08-28
CA2568247A1 (en) 2000-04-27
NO20070112L (no) 2001-06-19
NO20011878L (no) 2001-06-19
EA004419B1 (ru) 2004-04-29
US20040120282A1 (en) 2004-06-24
ATE266280T1 (de) 2004-05-15
EA200600592A1 (ru) 2006-08-25
DE69917060D1 (de) 2004-06-09
EP2088682A3 (de) 2011-05-18
CN1822516A (zh) 2006-08-23
US6603743B2 (en) 2003-08-05
EP1376889B1 (de) 2009-07-08
EP1376888A3 (de) 2005-02-02
AU2003257532A1 (en) 2003-11-20
SG120924A1 (en) 2006-04-26
ID28838A (id) 2001-07-05
ES2329775T3 (es) 2009-12-01
HK1038450A1 (en) 2002-03-15
EA005780B1 (ru) 2005-06-30
CA2568247C (en) 2012-05-22
KR100424518B1 (ko) 2004-03-27
IL142554A0 (en) 2002-03-10
EA200300068A1 (ru) 2003-04-24
EP1376889A2 (de) 2004-01-02
DK1376888T3 (da) 2008-08-11
ATE436122T1 (de) 2009-07-15
AU2003257532B2 (en) 2005-12-01
NO20080404L (no) 2001-06-19
EA200301154A1 (ru) 2004-12-30
US20100260238A1 (en) 2010-10-14
AU2006200879A1 (en) 2006-03-23
EA003472B1 (ru) 2003-06-26
EP1123584B1 (de) 2004-05-06
DE69917060T2 (de) 2005-04-28
NO20011878D0 (no) 2001-04-11

Similar Documents

Publication Publication Date Title
EP1376888B1 (de) Unterdrückung von Pilotsignalen und unerwünschten Verkehrssignalen in einem CDMA-System
HK1061612B (en) Cancellation of pilot and unwanted traffic signals in a cdma system
HK1135243A (en) Cancellation of pilot and unwanted traffic signals in a cdma system
HK1063111B (en) Cancellation of pilot and unwanted traffic signals in a cdma system
HK1038450B (en) Cancellation of pilot and unwanted traffic signals in a cdma system
MXPA01003986A (en) Cancellation of pilot and unwanted traffic signals in a cdma system

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: 20170127