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
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)
- Radar Systems Or Details Thereof (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Radio Relay Systems (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.
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)
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 |
US7372895B2 (en) * | 2004-12-08 | 2008-05-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of and system for delay estimation with minimized finger allocation |
US7480356B2 (en) * | 2004-12-08 | 2009-01-20 | Telefonaktiebolaget L M Ericsson (Publ) | Method of and system for path selection in rich multipath conditions |
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)
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 |
-
2001
- 2001-09-28 US US09/968,344 patent/US6731676B2/en not_active Expired - Lifetime
-
2002
- 2002-01-10 DE DE60238385T patent/DE60238385D1/de not_active Expired - Lifetime
- 2002-01-10 IL IL15685802A patent/IL156858A0/xx unknown
- 2002-01-10 AT AT02707459T patent/ATE489777T1/de not_active IP Right Cessation
- 2002-01-10 MX MXPA03006281A patent/MXPA03006281A/es active IP Right Grant
- 2002-01-10 WO PCT/US2002/000887 patent/WO2002056495A2/en not_active Application Discontinuation
- 2002-01-10 EP EP10170082A patent/EP2237436A3/en not_active Withdrawn
- 2002-01-10 AU AU2002241864A patent/AU2002241864A1/en not_active Abandoned
- 2002-01-10 KR KR1020037009338A patent/KR100885142B1/ko active IP Right Grant
- 2002-01-10 KR KR1020087023683A patent/KR101028975B1/ko active IP Right Grant
- 2002-01-10 EP EP02707459A patent/EP1350336B1/en not_active Expired - Lifetime
-
2003
- 2003-07-09 IL IL156858A patent/IL156858A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20030069211A (ko) | 2003-08-25 |
EP2237436A2 (en) | 2010-10-06 |
WO2002056495A3 (en) | 2003-02-20 |
US6731676B2 (en) | 2004-05-04 |
WO2002056495A2 (en) | 2002-07-18 |
KR100885142B1 (ko) | 2009-02-23 |
ATE489777T1 (de) | 2010-12-15 |
EP1350336A2 (en) | 2003-10-08 |
DE60238385D1 (de) | 2011-01-05 |
AU2002241864A1 (en) | 2002-07-24 |
US20020126742A1 (en) | 2002-09-12 |
EP1350336B1 (en) | 2010-11-24 |
KR101028975B1 (ko) | 2011-04-12 |
IL156858A (en) | 2009-12-24 |
KR20080090581A (ko) | 2008-10-08 |
EP2237436A3 (en) | 2010-11-10 |
IL156858A0 (en) | 2004-02-08 |
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Legal Events
Date | Code | Title | Description |
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FG | Grant or registration |