BR0015954A - Método e equipamento para uma procura por piloto usando um filtro casado - Google Patents
Método e equipamento para uma procura por piloto usando um filtro casadoInfo
- Publication number
- BR0015954A BR0015954A BR0015954-9A BR0015954A BR0015954A BR 0015954 A BR0015954 A BR 0015954A BR 0015954 A BR0015954 A BR 0015954A BR 0015954 A BR0015954 A BR 0015954A
- Authority
- BR
- Brazil
- Prior art keywords
- matched filter
- signal
- taps
- pilot
- equipment
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
-
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
-
- 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
- H04B1/709—Correlator structure
-
- 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
- H04B1/709—Correlator structure
- H04B1/7093—Matched filter type
-
- 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)
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
"MéTODO E EQUIPAMENTO PARA UMA PROCURA POR PILOTO USANDO UM FILTRO CASADO". A presente invenção inclui um detetor ou pesquisador de sinal piloto celular para uso em uma unidade de comunicação móvel celular. O detetor de sinal utiliza um filtro casado (matched) para detectar um sinal piloto transmitido a partir de uma estação base celular. O filtro casado inclui uma pluralidade de taps (taps) e uma pluralidade de retardos localizados entre taps adjacentes. Os componentes de sinal de um sinal digital recebido são mantidos nas taps do filtro casado pelos retardos. O filtro casado compara os componentes de sinal do sinal recebido a um padrão digital esperado ou procurado. O filtro casado emite um sinal relativamente elevado caso o sinal digital recebido estiver de acordo com o padrão digital esperado. O filtro casado pode também ser usado em paralelo com um correlacionador.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/450,265 US6760366B1 (en) | 1999-11-29 | 1999-11-29 | Method and apparatus for pilot search using a matched filter |
PCT/US2000/032411 WO2001039388A1 (en) | 1999-11-29 | 2000-11-28 | Method and apparatus for a pilot search using a matched filter |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0015954A true BR0015954A (pt) | 2003-07-15 |
Family
ID=23787407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0015954-9A BR0015954A (pt) | 1999-11-29 | 2000-11-28 | Método e equipamento para uma procura por piloto usando um filtro casado |
Country Status (10)
Country | Link |
---|---|
US (2) | US6760366B1 (pt) |
EP (2) | EP1234382A1 (pt) |
JP (1) | JP4790958B2 (pt) |
KR (1) | KR100782605B1 (pt) |
CN (2) | CN1208909C (pt) |
AU (1) | AU777742B2 (pt) |
BR (1) | BR0015954A (pt) |
HK (1) | HK1055516A1 (pt) |
TW (1) | TW498630B (pt) |
WO (1) | WO2001039388A1 (pt) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5841768A (en) * | 1996-06-27 | 1998-11-24 | Interdigital Technology Corporation | Method of controlling initial power ramp-up in CDMA systems by using short codes |
US6944149B1 (en) * | 1998-09-24 | 2005-09-13 | Samsung Electronics Co., Ltd. | Apparatus and method or searching for PN sequence phase in multi-carrier CDMA mobile communication system |
US6363060B1 (en) * | 1999-06-30 | 2002-03-26 | Qualcomm Incorporated | Method and apparatus for fast WCDMA acquisition |
KR100689033B1 (ko) * | 2001-02-02 | 2007-03-08 | 삼성전자주식회사 | 데이터 슬라이서 및 이를 적용한 알에프 수신기 |
US20050148349A1 (en) * | 2003-12-19 | 2005-07-07 | Padmaja Putcha | Cell selection on transitioning from dedicated mode in wireless communications devices |
CN100341375C (zh) * | 2004-05-31 | 2007-10-03 | 华为技术有限公司 | 一种小区射频发射通道时延测量装置及方法 |
US8086241B2 (en) * | 2004-11-18 | 2011-12-27 | Mediatek Incorporation | Handoff methods, and devices utilizing same |
US8223623B2 (en) * | 2005-03-28 | 2012-07-17 | Qualcomm Incorporated | Timing and frequency acquisition for OFDM systems |
DE102005041455A1 (de) * | 2005-08-31 | 2007-03-15 | Abb Patent Gmbh | Automatisierungstechnische Einrichtung |
DE102005043485A1 (de) | 2005-09-13 | 2007-03-15 | Abb Patent Gmbh | Automatisierungstechnische Einrichtung |
DE102005043481A1 (de) * | 2005-09-13 | 2007-03-15 | Abb Patent Gmbh | Automatisierungstechnische Einrichtung |
DE102005043482A1 (de) * | 2005-09-13 | 2007-03-15 | Abb Patent Gmbh | Automatisierungstechnische Einrichtung |
DE102005043479A1 (de) * | 2005-09-13 | 2007-03-15 | Abb Patent Gmbh | Automatisierungstechnische Einrichtung |
US7680075B2 (en) * | 2006-05-17 | 2010-03-16 | Alcatel-Lucent Usa Inc. | Identification of base stations |
US8619909B2 (en) * | 2006-06-20 | 2013-12-31 | Southwest Research Institute | Signal detector using matched filter for training signal detection |
EP1876728B1 (fr) * | 2006-07-07 | 2014-01-01 | E-Blink | Procédé de synchronisation de deux dispositifs électroniques d'une liaison sans fil, notamment d'un réseau de téléphonie mobile et système de mise en oeuvre de ce procédé |
US7672415B1 (en) * | 2006-09-28 | 2010-03-02 | L-3 Communications, Corp. | System and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal |
US8571088B2 (en) * | 2007-11-12 | 2013-10-29 | Qualcomm Incorporated | Suppression of multipath effects for received SPS signals |
US8842785B2 (en) * | 2008-07-01 | 2014-09-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Soft scaling method and apparatus |
JP5280450B2 (ja) * | 2008-08-07 | 2013-09-04 | 株式会社日立メディコ | X線ct画像形成方法及びそれを用いたx線ct装置 |
FR2956934B1 (fr) | 2010-02-26 | 2012-09-28 | Blink E | Procede et dispositif d'emission/reception de signaux electromagnetiques recus/emis sur une ou plusieurs premieres bandes de frequences. |
EP2405586B1 (en) * | 2010-07-06 | 2018-08-22 | Keysight Technologies Singapore (Holdings) Pte.Ltd | Apparatus and method for pilot detection |
US8768359B2 (en) | 2010-08-20 | 2014-07-01 | Qualcomm Incorporated | Sample selection for secondary synchronization signal (SSS) detection |
FR2990315B1 (fr) | 2012-05-04 | 2014-06-13 | Blink E | Procede de transmission d'informations entre une unite emettrice et une unite receptrice |
US8879679B2 (en) * | 2012-08-27 | 2014-11-04 | Motorola Mobility Llc | Frequency offset compensation improvement for a long term evolution (LTE) searcher |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401307A (en) | 1981-09-10 | 1983-08-30 | Jacques Dechavanne | Seal, scraper, and guide for piston rod of single-action cylinder |
US4550414A (en) * | 1983-04-12 | 1985-10-29 | Charles Stark Draper Laboratory, Inc. | Spread spectrum adaptive code tracker |
US4901307A (en) * | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
US5109390A (en) | 1989-11-07 | 1992-04-28 | Qualcomm Incorporated | Diversity receiver in a cdma cellular telephone system |
US5031193A (en) * | 1989-11-13 | 1991-07-09 | Motorola, Inc. | Method and apparatus for diversity reception of time-dispersed signals |
US5103459B1 (en) | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5490165A (en) | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
DE69532190T2 (de) * | 1994-06-23 | 2004-08-12 | Ntt Mobile Communications Network Inc. | Verfahren und anordnung zum empfangen eines code-division-multiplexsignals |
JP2705623B2 (ja) * | 1995-03-22 | 1998-01-28 | 日本電気株式会社 | ダイバーシチ送受信方法及び送受信機 |
US5627855A (en) | 1995-05-25 | 1997-05-06 | Golden Bridge Technology, Inc. | Programmable two-part matched filter for spread spectrum |
JPH0946174A (ja) * | 1995-07-31 | 1997-02-14 | Sharp Corp | フィルタ回路 |
US5719898A (en) | 1995-09-29 | 1998-02-17 | Golden Bridge Technology, Inc. | Fuzzy-logic spread-spectrum adaptive power control |
JPH09116475A (ja) * | 1995-10-23 | 1997-05-02 | Nec Corp | 時間ダイバーシチ送受信システム |
US5640425A (en) | 1995-12-26 | 1997-06-17 | Golden Bridge Technology, Inc. | Fast-acting costas loop |
US5864578A (en) | 1996-04-29 | 1999-01-26 | Golden Bridge Technology, Inc. | Matched filter-based handoff method and apparatus |
JPH09321667A (ja) * | 1996-05-29 | 1997-12-12 | Yozan:Kk | Cdma通信システム用受信機 |
US5862133A (en) * | 1996-08-02 | 1999-01-19 | Golden Bridge Technology | Packet-switched spread-spectrum system |
US6067292A (en) * | 1996-08-20 | 2000-05-23 | Lucent Technologies Inc | Pilot interference cancellation for a coherent wireless code division multiple access receiver |
US5742637A (en) | 1996-08-20 | 1998-04-21 | Golden Bridge Technology, Inc. | Fast phase estimation in digital communication systems |
US5715276A (en) | 1996-08-22 | 1998-02-03 | Golden Bridge Technology, Inc. | Symbol-matched filter having a low silicon and power requirement |
JP3376224B2 (ja) | 1996-10-23 | 2003-02-10 | 株式会社エヌ・ティ・ティ・ドコモ | Ds−cdma基地局間非同期セルラ方式における初期同期方法および受信機 |
US5950131A (en) * | 1996-10-29 | 1999-09-07 | Motorola, Inc. | Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone |
US5784466A (en) * | 1997-01-16 | 1998-07-21 | Ford Motor Company | Co-channel interference detector |
JP3751419B2 (ja) * | 1997-06-16 | 2006-03-01 | 松下電器産業株式会社 | マッチドフィルタおよび同期方法 |
US5991330A (en) | 1997-06-27 | 1999-11-23 | Telefonaktiebolaget L M Ericsson (Pub1) | Mobile Station synchronization within a spread spectrum communication systems |
JPH11150523A (ja) * | 1997-11-17 | 1999-06-02 | Oki Electric Ind Co Ltd | スペクトラム拡散送信装置、スペクトラム拡散受信装置及びスペクトラム拡散通信システム |
US6160803A (en) * | 1998-01-12 | 2000-12-12 | Golden Bridge Technology, Inc. | High processing gain spread spectrum TDMA system and method |
US6134440A (en) * | 1998-01-26 | 2000-10-17 | Qualcomm Inc. | Method and apparatus for performing mobile station assisted hard handoff using off line searching |
JPH11308149A (ja) * | 1998-04-24 | 1999-11-05 | Mitsubishi Electric Corp | 4相相関器 |
US6266361B1 (en) * | 1998-07-21 | 2001-07-24 | Chung-Shan Institute Of Science And Technology | Method and architecture for correcting carrier frequency offset and spreading code timing offset in a direct sequence spread spectrum communication system |
AU2915201A (en) * | 1999-12-30 | 2001-07-16 | Morphics Technology, Inc. | A fast initial acquisition and search device for a spread spectrum communicationsystem |
-
1999
- 1999-11-29 US US09/450,265 patent/US6760366B1/en not_active Expired - Lifetime
-
2000
- 2000-11-28 EP EP00980845A patent/EP1234382A1/en not_active Ceased
- 2000-11-28 WO PCT/US2000/032411 patent/WO2001039388A1/en active IP Right Grant
- 2000-11-28 CN CNB00818710XA patent/CN1208909C/zh not_active Expired - Lifetime
- 2000-11-28 BR BR0015954-9A patent/BR0015954A/pt not_active Application Discontinuation
- 2000-11-28 CN CN200410056751.1A patent/CN1815903B/zh not_active Expired - Lifetime
- 2000-11-28 EP EP10010370.4A patent/EP2259437A3/en not_active Withdrawn
- 2000-11-28 KR KR1020027006808A patent/KR100782605B1/ko active IP Right Grant
- 2000-11-28 JP JP2001540941A patent/JP4790958B2/ja not_active Expired - Lifetime
- 2000-11-28 AU AU18054/01A patent/AU777742B2/en not_active Ceased
- 2000-12-19 TW TW089125336A patent/TW498630B/zh not_active IP Right Cessation
-
2003
- 2003-10-23 HK HK03107654A patent/HK1055516A1/xx not_active IP Right Cessation
-
2004
- 2004-01-16 US US10/759,981 patent/US7130334B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR100782605B1 (ko) | 2007-12-06 |
EP1234382A1 (en) | 2002-08-28 |
AU1805401A (en) | 2001-06-04 |
CN1815903A (zh) | 2006-08-09 |
JP2003521142A (ja) | 2003-07-08 |
AU777742B2 (en) | 2004-10-28 |
KR20020053093A (ko) | 2002-07-04 |
HK1055516A1 (en) | 2004-01-09 |
WO2001039388A1 (en) | 2001-05-31 |
JP4790958B2 (ja) | 2011-10-12 |
CN1208909C (zh) | 2005-06-29 |
CN1433593A (zh) | 2003-07-30 |
EP2259437A2 (en) | 2010-12-08 |
TW498630B (en) | 2002-08-11 |
CN1815903B (zh) | 2014-08-20 |
US20040146126A1 (en) | 2004-07-29 |
US6760366B1 (en) | 2004-07-06 |
EP2259437A3 (en) | 2014-06-04 |
US7130334B2 (en) | 2006-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR0015954A (pt) | Método e equipamento para uma procura por piloto usando um filtro casado | |
BR9906672A (pt) | Processo de transmissão de sinal em uma estação base, dispositivo de transmissão para transmitir um sinal piloto, um sinal de canal comum, e um sinal de canal de dados a partir de uma estação base em um sistema de comunicação móvel, processo de transmissão/recepção de sinal de estação base, sistema de comunicação móvel, dispositivo de recepção em uma estação móvel, rastreador em um dispositivo de recepção de estação móvel, processos de transmissão/recepção de sinal em um sistema de comunicação móvel e de aquisição de sinais a partir de uma pluralidade de estações base em um sistema de comunicação cdma, e, dispositivo de transmissão/recepção de sinalde estação base. | |
AU2002356462A1 (en) | Method and apparatus for embodying and synchronizing downlink signal in mobile communication system and method for searching cell using the same | |
BR9910742A (pt) | Processo, arranjo para uso em um terminal móvel e com um sistema de telecomunicações móvel, sistema de telecomunicação móvel e arranjo de relógio compartilhado | |
BR9813927A (pt) | Método e aparelho para rastrear um sinal de comunicação em um sistema de comunicação sem fio | |
BR0112406A (pt) | método e equipamento para efetuar recaptação de modo inativo e handoff em um sistema de comunicação assìncrono | |
BR9710027A (pt) | Processo para localizar uma estação móvel | |
BR9905822A (pt) | Sistema de posicionamento local | |
FI960743A (fi) | Sytokiineja, jotka sitoutuvat solun pinnan hekreseptoriin | |
BR9607948A (pt) | Processo para proporcionar a desconexão de comunicação em cdma para uma técnica de comunicação de acesso alternativa sistema de comunicação celular para proporcionar comunicação com pelo menos uma unidade móvel e processo de comunicação com pelo menos uma unidade remota pela utilização de um sistema celular | |
ATE418079T1 (de) | Signaldetektor mit korrelationsanalyse von nichteinheitlichen und getrennten abtastsegmenten | |
NO20053873L (no) | Uhensiktmessig celleutelukkelse i tradlose kommunikasjonssystemer | |
NO20076436L (no) | Tradlos flerbaererkommunikasjon | |
BR9814826A (pt) | Processo para determinar a posição de uma estação móvel, e, sistema de posicionamento para um sistema de telefone celular | |
WO2005117541A3 (en) | Method and system for aligning and classifying images | |
BR9913838A (pt) | Procedimento para a transmissão de dados em um sistema de rádio-móvel, estação móvel e estação de rádio-base | |
BR9917225A (pt) | Processos para localizar geograficamente umaunidade de assinante dentro de um sistema decomunicação cdma, e para determinar umadistância entre uma unidade de assinante e umaestação base em um sistema de comunicação cdma,sistemas de comunicação cdma de espectro deespalhamento capaz de localizar geograficamenteuma unidade de assinante, de comunicação cdmacapaz de determinar uma distância entre umaunidade de assinante e uma estação base, e,unidade de assinante para uso em um sistema decomunicação cdma | |
AU7056500A (en) | Apparatus and methods for receiving information using variable length accumulation searchers | |
EP1220482A4 (en) | SEARCH PROCEDURE IN A MOBILE CDMA MESSAGE RECEIVER SYSTEM AND MESSAGE RECEIVER | |
DE60035367D1 (de) | Sucher mit programmierbarem signalangepasstem filter zum suchen nach mehreren pilotsignalen | |
BRPI0412084A (pt) | método e aparelho para detecção de sinal piloto com desvio de freqüência utilizando correlator de múltiplos estágios | |
BR0002435A (pt) | Método e aparelho para ativar um receptor de radiotelefone de espectro de dispersão | |
NO20013839D0 (no) | Fremgangsmate og apparat for tidsforskjovet signalfolging ("time tracking") | |
WO2000018142A3 (en) | Apparatus and method of searching for pn sequence phase in multi-carrier cdma mobile communication system | |
TW200718066A (en) | Receiving method and receiving apparatus, and communication system utilizing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM ART. 13 E ART. 25 DA LPI |
|
B12B | Appeal against refusal [chapter 12.2 patent gazette] |