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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
German (de)
English (en)
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

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (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)
  • Train Traffic Observation, Control, And Security (AREA)
  • Selective Calling Equipment (AREA)

Claims (2)

  1. Dispositif de suppression de signal pilote global (61) destiné à être utilisé dans un récepteur adapté à recevoir des signaux de communication provenant d'un émetteur sur une interface radio d'accès multiple par répartition en code qui élimine le signal pilote global d'un signal de trafic souhaité avant le décodage, caractérisé en ce que le dispositif de suppression comprend :
    une entrée (63) pour recevoir les signaux de communication et une sortie de système (Oadd) ;
    ladite entrée étant accouplée à un despreader de pilote global (65) et un despreader de signal de trafic souhaité (91) ayant chacun une sortie additionnée ;
    un moyen d'intercorrélation de signal de trafic souhaité et de pilote global ; ladite sortie (Oad1) du despreader de pilote global (65) étant accouplée à un moyen de détermination de force de pilote, ledit moyen de détermination ayant une sortie (Opm);
    ladite sortie (Opm) du moyen de détermination de force de pilote étant multipliée avec ladite sortie (Oad2) du moyen d'intercorrélation, où ledit moyen d'intercorrélation comprend :
    un générateur de code de signal pilote global ;
    un générateur de code de conjugué complexe de signal de trafic souhaité ;
    un mélangeur pour l'intercorrélation dudit code de signal pilote global et dudit code de conjugué complexe de signal de trafic souhaité ; et
    un processeur de sommation et de vidage pour l'addition dans le temps dudit produit d'intercorrélation ; et
    ledit produit multiplié étant soustrait d'une sortie additionnée (Oad3) de ladite sortie du despreader de signal de trafic souhaité (91) émettant (Oadd) le signal de trafic souhaité exempt du signal pilote global.
  2. Dispositif de suppression de signal pilote global (61) selon la revendication 1, dans lequel ledit moyen pour dériver ladite force du signal pilote global comprend en outre
    un filtre passe-bas (75) ayant une sortie (Olpf) ; et
    un processeur (77) accouplé audit filtre passe-bas (75) dérivant et émettant la force du signal pilote global (Opm).
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
US09/175,174 US6498784B1 (en) 1998-10-20 1998-10-20 Cancellation of pilot and traffic signals
US175174 1998-10-20

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

Similar Documents

Publication Publication Date Title
EP1376888B1 (fr) Suppression du signal pilote et des signaux de trafic indesirables dans un système AMRC
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