BR9813927A - Método e aparelho para rastrear um sinal de comunicação em um sistema de comunicação sem fio - Google Patents
Método e aparelho para rastrear um sinal de comunicação em um sistema de comunicação sem fioInfo
- Publication number
- BR9813927A BR9813927A BR9813927-4A BR9813927A BR9813927A BR 9813927 A BR9813927 A BR 9813927A BR 9813927 A BR9813927 A BR 9813927A BR 9813927 A BR9813927 A BR 9813927A
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- offset
- value
- tracking
- wireless communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- 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
- 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
-
- 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
- H04B2001/70706—Spread spectrum techniques using direct sequence modulation using a code tracking loop, e.g. a delay locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
Abstract
"MéTODO E APARELHO PARA RASTREAR UM SINAL DE COMUNICAçãO EM UM SISTEMA DE COMUNICAçãO SEM FIO". O método para rastrear um sinal de comunicação móvel, que opera em um sistema de comunicação sem fio de acesso múltiplo de divisão de código incluindo uma antena (401), e um receptor de local de base (400) tendo dois dedos de rastrear receptor (F1, F2), inclui receber na antena (401) um primeiro sinal de multívio (119) chegando em um offsetpn em tempo (706) com um valor offset-pn avançado associado (704) e valor offset-pn de retardo (702) e receber na antena (401) um segundo sinal de multívio (107) chegando em um offset-pn em tempo (712) com um valor offset-pn avançado associado (710 ) e valor offset-pn de retardo (708). O método inclui ainda determinar um espaçamento entre o primeiro sinal de multívio e o segundo sinal de multívio, e ajustar pelo menos dois dedos de rastrear receptor com base no valor offset-pn avançado de um dos sinais de multívio e o valor offset-pn de retardo do outro sinal de multívio.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/964,124 US5987016A (en) | 1997-11-04 | 1997-11-04 | Method and apparatus for tracking a communication signal in a wireless communication system |
PCT/US1998/016154 WO1999023770A1 (en) | 1997-11-04 | 1998-07-31 | Method and apparatus for tracking a communication signal in a wireless communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9813927A true BR9813927A (pt) | 2002-05-07 |
Family
ID=25508156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9813927-4A BR9813927A (pt) | 1997-11-04 | 1998-07-31 | Método e aparelho para rastrear um sinal de comunicação em um sistema de comunicação sem fio |
Country Status (13)
Country | Link |
---|---|
US (1) | US5987016A (pt) |
JP (1) | JP3920570B2 (pt) |
KR (1) | KR20010031734A (pt) |
CN (1) | CN1118961C (pt) |
BR (1) | BR9813927A (pt) |
CA (1) | CA2308483A1 (pt) |
DE (1) | DE19882771T1 (pt) |
FI (1) | FI20001031A (pt) |
FR (1) | FR2770708A1 (pt) |
GB (1) | GB2347330B (pt) |
IL (1) | IL135771A0 (pt) |
SE (1) | SE521915C2 (pt) |
WO (1) | WO1999023770A1 (pt) |
Families Citing this family (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7092369B2 (en) | 1995-11-17 | 2006-08-15 | Symbol Technologies, Inc. | Communications network with wireless gateways for mobile terminal access |
US6531982B1 (en) | 1997-09-30 | 2003-03-11 | Sirf Technology, Inc. | Field unit for use in a GPS system |
US6327471B1 (en) | 1998-02-19 | 2001-12-04 | Conexant Systems, Inc. | Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff |
JPH11261440A (ja) * | 1998-03-11 | 1999-09-24 | Oki Electric Ind Co Ltd | 合成受信装置 |
US6348744B1 (en) | 1998-04-14 | 2002-02-19 | Conexant Systems, Inc. | Integrated power management module |
US7545854B1 (en) | 1998-09-01 | 2009-06-09 | Sirf Technology, Inc. | Doppler corrected spread spectrum matched filter |
US7711038B1 (en) | 1998-09-01 | 2010-05-04 | Sirf Technology, Inc. | System and method for despreading in a spread spectrum matched filter |
US6125137A (en) * | 1998-09-11 | 2000-09-26 | Motorola, Inc. | Apparatus and method for performing a signal search in a coherent wireless communication system |
US6693953B2 (en) | 1998-09-30 | 2004-02-17 | Skyworks Solutions, Inc. | Adaptive wireless communication receiver |
US7184462B1 (en) * | 1998-12-04 | 2007-02-27 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for configuring a rake receiver |
US6606349B1 (en) | 1999-02-04 | 2003-08-12 | Sirf Technology, Inc. | Spread spectrum receiver performance improvement |
US6448925B1 (en) | 1999-02-04 | 2002-09-10 | Conexant Systems, Inc. | Jamming detection and blanking for GPS receivers |
US6577271B1 (en) | 1999-03-30 | 2003-06-10 | Sirf Technology, Inc | Signal detector employing coherent integration |
US6304216B1 (en) | 1999-03-30 | 2001-10-16 | Conexant Systems, Inc. | Signal detector employing correlation analysis of non-uniform and disjoint sample segments |
US6351486B1 (en) | 1999-05-25 | 2002-02-26 | Conexant Systems, Inc. | Accelerated selection of a base station in a wireless communication system |
US6278403B1 (en) | 1999-09-17 | 2001-08-21 | Sirf Technology, Inc. | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver |
US6922434B2 (en) * | 1999-10-19 | 2005-07-26 | Ericsson Inc. | Apparatus and methods for finger delay selection in RAKE receivers |
US6526322B1 (en) | 1999-12-16 | 2003-02-25 | Sirf Technology, Inc. | Shared memory architecture in GPS signal processing |
US6788655B1 (en) | 2000-04-18 | 2004-09-07 | Sirf Technology, Inc. | Personal communications device with ratio counter |
US6714158B1 (en) | 2000-04-18 | 2004-03-30 | Sirf Technology, Inc. | Method and system for data detection in a global positioning system satellite receiver |
US7885314B1 (en) | 2000-05-02 | 2011-02-08 | Kenneth Scott Walley | Cancellation system and method for a wireless positioning system |
US8078189B2 (en) | 2000-08-14 | 2011-12-13 | Sirf Technology, Inc. | System and method for providing location based services over a network |
US7929928B2 (en) | 2000-05-18 | 2011-04-19 | Sirf Technology Inc. | Frequency phase correction system |
US6462708B1 (en) | 2001-04-05 | 2002-10-08 | Sirf Technology, Inc. | GPS-based positioning system for mobile GPS terminals |
US6778136B2 (en) | 2001-12-13 | 2004-08-17 | Sirf Technology, Inc. | Fast acquisition of GPS signal |
US6671620B1 (en) | 2000-05-18 | 2003-12-30 | Sirf Technology, Inc. | Method and apparatus for determining global position using almanac information |
US8116976B2 (en) | 2000-05-18 | 2012-02-14 | Csr Technology Inc. | Satellite based positioning method and system for coarse location positioning |
US7949362B2 (en) | 2000-05-18 | 2011-05-24 | Sirf Technology, Inc. | Satellite positioning aided communication system selection |
US6389291B1 (en) | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US6427120B1 (en) * | 2000-08-14 | 2002-07-30 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US7970411B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US7970412B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US7616705B1 (en) | 2000-07-27 | 2009-11-10 | Sirf Technology Holdings, Inc. | Monolithic GPS RF front end integrated circuit |
US6856794B1 (en) | 2000-07-27 | 2005-02-15 | Sirf Technology, Inc. | Monolithic GPS RF front end integrated circuit |
US7236883B2 (en) | 2000-08-14 | 2007-06-26 | Sirf Technology, Inc. | Aiding in a satellite positioning system |
US7680178B2 (en) | 2000-08-24 | 2010-03-16 | Sirf Technology, Inc. | Cross-correlation detection and elimination in a receiver |
DE60144522D1 (de) | 2000-08-24 | 2011-06-09 | Sirf Tech Inc | Vorrichtung zur reduzierung von autokorrelation und kreuzkorrelation bei schwachen cdma-signalen |
US6931233B1 (en) | 2000-08-31 | 2005-08-16 | Sirf Technology, Inc. | GPS RF front end IC with programmable frequency synthesizer for use in wireless phones |
US7047023B1 (en) | 2000-12-01 | 2006-05-16 | Sirf Technology, Inc. | GPS RF front end IC with frequency plan for improved integrability |
US7747236B1 (en) | 2000-12-11 | 2010-06-29 | Sirf Technology, Inc. | Method and apparatus for estimating local oscillator frequency for GPS receivers |
US7113552B1 (en) | 2000-12-21 | 2006-09-26 | Sirf Technology, Inc. | Phase sampling techniques using amplitude bits for digital receivers |
US7769078B2 (en) * | 2000-12-22 | 2010-08-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver |
US7671489B1 (en) | 2001-01-26 | 2010-03-02 | Sirf Technology, Inc. | Method and apparatus for selectively maintaining circuit power when higher voltages are present |
US6680703B1 (en) | 2001-02-16 | 2004-01-20 | Sirf Technology, Inc. | Method and apparatus for optimally tuning a circularly polarized patch antenna after installation |
US6703971B2 (en) | 2001-02-21 | 2004-03-09 | Sirf Technologies, Inc. | Mode determination for mobile GPS terminals |
US7076256B1 (en) | 2001-04-16 | 2006-07-11 | Sirf Technology, Inc. | Method and apparatus for transmitting position data using control channels in wireless networks |
US7925210B2 (en) | 2001-05-21 | 2011-04-12 | Sirf Technology, Inc. | Synchronizing a radio network with end user radio terminals |
US7877104B2 (en) * | 2001-05-21 | 2011-01-25 | Sirf Technology Inc. | Method for synchronizing a radio network using end user radio terminals |
US7668554B2 (en) | 2001-05-21 | 2010-02-23 | Sirf Technology, Inc. | Network system for aided GPS broadcast positioning |
US8244271B2 (en) | 2001-05-21 | 2012-08-14 | Csr Technology Inc. | Distributed data collection of satellite data |
US6618010B2 (en) | 2001-11-14 | 2003-09-09 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Passive tracking system and method |
US7372892B2 (en) | 2002-04-29 | 2008-05-13 | Interdigital Technology Corporation | Simple and robust digital code tracking loop for wireless communication systems |
US6873826B2 (en) * | 2002-08-06 | 2005-03-29 | Motorola, Inc. | Method and mobile station for reporting multi-path signals based on minimum separation |
US7474688B2 (en) * | 2002-10-01 | 2009-01-06 | Texas Instruments Incorporated | System and method for detecting multiple direct sequence spread spectrum signals using a multi-mode searcher |
CN100456662C (zh) * | 2002-11-15 | 2009-01-28 | 华为技术有限公司 | 一种用于码分多址通信系统的多径跟踪方法和装置 |
US20040109494A1 (en) * | 2002-12-10 | 2004-06-10 | Kindred Daniel R. | Finger merge protection for rake receivers using polling |
US8138972B2 (en) | 2003-09-02 | 2012-03-20 | Csr Technology Inc. | Signal processing system for satellite positioning signals |
KR20070012308A (ko) * | 2003-09-02 | 2007-01-25 | 서프 테크놀러지, 인코포레이티드 | 위성 위치 신호를 위한 신호 처리 시스템 |
US8164517B2 (en) | 2003-09-02 | 2012-04-24 | Csr Technology Inc. | Global positioning system receiver timeline management |
US7310365B2 (en) * | 2003-10-31 | 2007-12-18 | Texas Instruments Incorporated | Group decision rule in code tracking using a delay lock loop (DLL) |
US7305056B2 (en) * | 2003-11-18 | 2007-12-04 | Ibiquity Digital Corporation | Coherent tracking for FM in-band on-channel receivers |
US7365680B2 (en) | 2004-02-10 | 2008-04-29 | Sirf Technology, Inc. | Location services system that reduces auto-correlation or cross-correlation in weak signals |
US8527855B2 (en) * | 2004-08-16 | 2013-09-03 | Koninklijke Philips N.V. | Interleaving and parsing for MIMO-OFDM systems |
US20130257667A1 (en) * | 2012-03-30 | 2013-10-03 | Broadcom Corporation | Antenna Tuning |
US10408930B2 (en) * | 2016-09-28 | 2019-09-10 | Intel Corporation | Beamforming training using echoes of an omnidirectional pulse |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390207A (en) * | 1990-11-28 | 1995-02-14 | Novatel Communications Ltd. | Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators |
US5233626A (en) * | 1992-05-11 | 1993-08-03 | Space Systems/Loral Inc. | Repeater diversity spread spectrum communication system |
US5490165A (en) * | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
US5621752A (en) * | 1994-06-23 | 1997-04-15 | Qualcomm Incorporated | Adaptive sectorization in a spread spectrum communication system |
US5477195A (en) * | 1994-12-01 | 1995-12-19 | Stanford Telecommunications, Inc. | Near optimal quasi-coherent delay lock loop (QCDLL) for tracking direct sequence signals and CDMA |
US5574721A (en) * | 1994-12-09 | 1996-11-12 | Stanford Telecommunications, Inc. | Orthogonal code tracking system having phantom carrier signal |
US5691974A (en) * | 1995-01-04 | 1997-11-25 | Qualcomm Incorporated | Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy |
US5608722A (en) * | 1995-04-03 | 1997-03-04 | Qualcomm Incorporated | Multi-user communication system architecture with distributed receivers |
-
1997
- 1997-11-04 US US08/964,124 patent/US5987016A/en not_active Expired - Lifetime
-
1998
- 1998-07-31 GB GB0010682A patent/GB2347330B/en not_active Expired - Fee Related
- 1998-07-31 CN CN98810704A patent/CN1118961C/zh not_active Expired - Fee Related
- 1998-07-31 BR BR9813927-4A patent/BR9813927A/pt not_active IP Right Cessation
- 1998-07-31 IL IL13577198A patent/IL135771A0/xx unknown
- 1998-07-31 WO PCT/US1998/016154 patent/WO1999023770A1/en not_active Application Discontinuation
- 1998-07-31 KR KR1020007004797A patent/KR20010031734A/ko not_active Application Discontinuation
- 1998-07-31 DE DE19882771T patent/DE19882771T1/de not_active Ceased
- 1998-07-31 JP JP2000519512A patent/JP3920570B2/ja not_active Expired - Fee Related
- 1998-07-31 CA CA002308483A patent/CA2308483A1/en not_active Abandoned
- 1998-10-09 FR FR9812647A patent/FR2770708A1/fr active Pending
-
2000
- 2000-05-03 FI FI20001031A patent/FI20001031A/fi not_active Application Discontinuation
- 2000-05-04 SE SE0001628A patent/SE521915C2/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2308483A1 (en) | 1999-05-14 |
FI20001031A (fi) | 2000-05-03 |
GB2347330B (en) | 2002-08-28 |
JP3920570B2 (ja) | 2007-05-30 |
KR20010031734A (ko) | 2001-04-16 |
SE0001628L (sv) | 2000-07-04 |
JP2001522192A (ja) | 2001-11-13 |
SE0001628D0 (sv) | 2000-05-04 |
GB2347330A (en) | 2000-08-30 |
IL135771A0 (en) | 2001-05-20 |
FR2770708A1 (fr) | 1999-04-30 |
WO1999023770A1 (en) | 1999-05-14 |
SE521915C2 (sv) | 2003-12-16 |
CN1118961C (zh) | 2003-08-20 |
CN1278377A (zh) | 2000-12-27 |
DE19882771T1 (de) | 2000-11-30 |
US5987016A (en) | 1999-11-16 |
GB0010682D0 (en) | 2000-06-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR9813927A (pt) | Método e aparelho para rastrear um sinal de comunicação em um sistema de comunicação sem fio | |
BR9710027A (pt) | Processo para localizar uma estação móvel | |
AU2002215994A1 (en) | System for determining the position of an object | |
BR9908269A (pt) | Método e aparelho para proporcionar um ajuste de tempo para um sistema de comunicação sem fio | |
BR9612016A (pt) | Conjunto de antena e processo para receber pelo menos um sinal de comunicação em uma primeira estação de comunicação em um processo de comunicaçao em um sistema de comunicação de rádio | |
BR9405581A (pt) | Processo para estabelecer comunicações entre uma primeira estaçãode rádio e uma segunda estação de rádio e entre uma estação móvel e uma estação movel e uma estação de base e sistema determinador de posição para deduzir em uma estação móvel, uma estimativa aproximadade pelo menos um dentre distancia e retardamento de propagação | |
BR0014188A (pt) | Método e aparelho para procura e transferência de informações disponìveis de um servidor de rede em um transceptor sem fio | |
BR0211605A (pt) | Sistema e método de detecção de objeto | |
NO990900L (no) | Radiokommunikasjonssystemer og fremgangsmÕter for radio-fyr-signal-transmisjon med jitter | |
FI971724A (fi) | Tiedonsiirto matkaviestinverkossa | |
BR9807628A (pt) | Processo para determinar uma localização de um dispositivo de comunicação sem fio, dispositivo de comunicação sem fio, e, sistema de comunicação. | |
BR9808879A (pt) | Sistema e método de sincronização para sistemas de comunicação digital | |
BR9913505B1 (pt) | processo para a sincronizaÇço de uma estaÇço rÁdio base com uma estaÇço màvel, estaÇço rÁdio base, estaÇço màvel, e sequÊncia de sinais. | |
DE69531164D1 (de) | Kodefolgesystem für ocdma mit phantomträgersignal | |
DE59711701D1 (de) | Prüfplatz für elektronische Baueinheiten, insbesondere Mobilfunktelefone | |
RU96111953A (ru) | Устройство определения задержки по времени при многолучевом распространении сигнала в канале связи обратной линии системы связи, использующей многостанционный доступ с кодовым делением | |
WO2002037134A3 (de) | Positionsbestimmungsverfahren und -vorrichtung | |
DE69616105D1 (de) | Abstimmschaltung für Empfangsgerät insbesondere Fernsehempfänger | |
BR0312364A (pt) | Método e arranjo de circuito para processamento de sinal em um receptor e/ou transmissor de um sistema de rádio | |
AU5830000A (en) | Identifying an object | |
BR9911454A (pt) | Dispositivo para determinação de posicionamento por meio de ondas de rádio | |
AU3873797A (en) | Information link | |
DE50304261D1 (de) | Accesspoint mit kombinierten Funkstandards | |
CA2302495A1 (en) | Method for performing a countdown function during a mobile-originated transfer for a packet radio system | |
WO1999057932A3 (en) | Method of measuring signal timing, and radio system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 4A,5A,6A,7A,8A E 9A ANUIDADES. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007. |
|
B15K | Others concerning applications: alteration of classification |
Ipc: H04B 1/7117 (2011.01), H04B 1/7115 (2011.0 |