MXPA03006281A - Grupos de asignacion de elementos de desmodulacion en un sistema de espectro propagado. - Google Patents

Grupos de asignacion de elementos de desmodulacion en un sistema de espectro propagado.

Info

Publication number
MXPA03006281A
MXPA03006281A MXPA03006281A MXPA03006281A MXPA03006281A MX PA03006281 A MXPA03006281 A MX PA03006281A MX PA03006281 A MXPA03006281 A MX PA03006281A MX PA03006281 A MXPA03006281 A MX PA03006281A MX PA03006281 A MXPA03006281 A MX PA03006281A
Authority
MX
Mexico
Prior art keywords
paths
spread spectrum
demodulation elements
assigning
path
Prior art date
Application number
MXPA03006281A
Other languages
English (en)
Inventor
Amerga Messay
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of MXPA03006281A publication Critical patent/MXPA03006281A/es

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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Radio Relay Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Un aparato, tal como una unidad de suscriptor o una estacion base dentro de un sistema de comunicacion de espectro propagado, puede agregar una o mas trayectorias "virtuales" adicionales a una lista de trayectorias candidato cuando se asignan elementos de desmodulacion. Estas trayectorias 'virtuales" se agregan como trayectorias candidato aunque no se haya detectado necesariamente un pico correspondiente dentro de un sistema de espectro propagado recibido. La lista de trayectoria puede incluir una primera trayectoria que tiene un desplazamiento de tiempo aproximadamente igual a un tiempo de desplazamiento para uno de los elementos de desmodulacion, y la trayectoria virtual que tiene una separacion corta de tiempo de la primera trayectoria. La separacion de tiempo entre las trayectorias puede ser, por ejemplo, menos de 2 chips.
MXPA03006281A 2001-01-11 2002-01-10 Grupos de asignacion de elementos de desmodulacion en un sistema de espectro propagado. MXPA03006281A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US26140201P 2001-01-11 2001-01-11
US09/968,344 US6731676B2 (en) 2001-01-11 2001-09-28 Assigning clusters of demodulation elements in a spread spectrum system
PCT/US2002/000887 WO2002056495A2 (en) 2001-01-11 2002-01-10 Assigning clusters of demodulation elements in a spread spectrum system

Publications (1)

Publication Number Publication Date
MXPA03006281A true MXPA03006281A (es) 2004-05-04

Family

ID=26948586

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA03006281A MXPA03006281A (es) 2001-01-11 2002-01-10 Grupos de asignacion de elementos de desmodulacion en un sistema de espectro propagado.

Country Status (9)

Country Link
US (1) US6731676B2 (es)
EP (2) EP2237436A3 (es)
KR (2) KR100885142B1 (es)
AT (1) ATE489777T1 (es)
AU (1) AU2002241864A1 (es)
DE (1) DE60238385D1 (es)
IL (2) IL156858A0 (es)
MX (1) MXPA03006281A (es)
WO (1) WO2002056495A2 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7277471B2 (en) * 2001-01-11 2007-10-02 Qualcomm Incorporated Time-tracking for clustered demodulation elements in a spread spectrum system
US7340017B1 (en) * 2002-07-30 2008-03-04 National Semiconductor Corporation System and method for finger management in a rake receiver
US7181836B2 (en) * 2003-12-19 2007-02-27 General Electric Company Method for making an electrode structure
KR100630170B1 (ko) * 2004-09-17 2006-09-29 삼성전자주식회사 비동기 이동통신 시스템에서 단말기의 셀 별 복조 타이밍 관리 방법 및 장치
US8406251B2 (en) * 2004-10-06 2013-03-26 Broadcom Corporation Method and system for processing multipath clusters
US7480356B2 (en) * 2004-12-08 2009-01-20 Telefonaktiebolaget L M Ericsson (Publ) Method of and system for path selection in rich multipath conditions
US7372895B2 (en) * 2004-12-08 2008-05-13 Telefonaktiebolaget Lm Ericsson (Publ) Method of and system for delay estimation with minimized finger allocation
US7693241B2 (en) * 2005-10-31 2010-04-06 Qualcomm Incorporated Rake receiver finger assignment based on signal path concentration
US20080069188A1 (en) * 2006-09-15 2008-03-20 Meyer David R Virtual reference timing for multi-time based systems
US8369356B2 (en) * 2007-03-21 2013-02-05 Qualcomm Incorporated Dynamic management of receiver resources
US8126031B2 (en) * 2007-08-07 2012-02-28 Qualcomm Incorporated Time-tracking management of demodulation elements in a receive diversity enabled rake receiver

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5978423A (en) * 1996-02-02 1999-11-02 Telefoanktiebolaget Lm Ericsson Method and arrangement of signal tracking and a rake-receiver utilizing the arrangement
US6345078B1 (en) 1997-07-31 2002-02-05 Lucent Technologies Inc. Finger assignment system for a multiple finger receiver and method thereof
US6078611A (en) 1997-09-16 2000-06-20 Motorola, Inc. Rake receiver and finger management method for spread spectrum communication
US6154455A (en) * 1997-12-24 2000-11-28 Nokia Mobile Phones Limited Prioritizing pilot set searching for a CDMA telecommunications system
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
JP2000165950A (ja) * 1998-11-30 2000-06-16 Sony Corp パイロット信号検出方法および無線通信端末装置
US6314130B1 (en) * 1999-04-28 2001-11-06 Dspc Technologies, Ltd. System and method for joint time tracking of multiple paths
US7184457B2 (en) * 2000-02-28 2007-02-27 Texas Instruments Incorporated Spread spectrum path estimation
US6834075B2 (en) * 2001-01-12 2004-12-21 Motorola, Inc. Method for improving multipath searcher speed

Also Published As

Publication number Publication date
WO2002056495A3 (en) 2003-02-20
WO2002056495A2 (en) 2002-07-18
AU2002241864A1 (en) 2002-07-24
US20020126742A1 (en) 2002-09-12
EP1350336A2 (en) 2003-10-08
KR101028975B1 (ko) 2011-04-12
KR20030069211A (ko) 2003-08-25
IL156858A0 (en) 2004-02-08
IL156858A (en) 2009-12-24
EP2237436A3 (en) 2010-11-10
ATE489777T1 (de) 2010-12-15
EP2237436A2 (en) 2010-10-06
EP1350336B1 (en) 2010-11-24
DE60238385D1 (de) 2011-01-05
KR20080090581A (ko) 2008-10-08
US6731676B2 (en) 2004-05-04
KR100885142B1 (ko) 2009-02-23

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