DE69933869D1 - Verfahren und vorrichtung zur einschränkung des frequenz-unsicherheitsbereiches eines doppler-verschobenen signals - Google Patents
Verfahren und vorrichtung zur einschränkung des frequenz-unsicherheitsbereiches eines doppler-verschobenen signalsInfo
- Publication number
- DE69933869D1 DE69933869D1 DE69933869T DE69933869T DE69933869D1 DE 69933869 D1 DE69933869 D1 DE 69933869D1 DE 69933869 T DE69933869 T DE 69933869T DE 69933869 T DE69933869 T DE 69933869T DE 69933869 D1 DE69933869 D1 DE 69933869D1
- Authority
- DE
- Germany
- Prior art keywords
- pilot signal
- satellite
- doppler shifted
- energy
- restricting
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000009825 accumulation Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0034—Correction of carrier offset using hypothesis testing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97842 | 1998-06-15 | ||
US09/097,842 US6249539B1 (en) | 1998-06-15 | 1998-06-15 | System and method for narrowing the range of frequency uncertainty of a doppler shifted signal |
PCT/US1999/013552 WO1999066649A1 (en) | 1998-06-15 | 1999-06-14 | System and method for narrowing the range of frequency uncertainty of a doppler shifted signal |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69933869D1 true DE69933869D1 (de) | 2006-12-14 |
DE69933869T2 DE69933869T2 (de) | 2007-06-21 |
Family
ID=22265400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69933869T Expired - Lifetime DE69933869T2 (de) | 1998-06-15 | 1999-06-14 | Verfahren und vorrichtung zur einschränkung des frequenz-unsicherheitsbereiches eines doppler-verschobenen signals |
Country Status (11)
Country | Link |
---|---|
US (2) | US6249539B1 (de) |
EP (1) | EP1088400B1 (de) |
JP (1) | JP4194759B2 (de) |
KR (1) | KR100693683B1 (de) |
CN (1) | CN1158785C (de) |
AT (1) | ATE344552T1 (de) |
AU (1) | AU760427B2 (de) |
CA (1) | CA2335136A1 (de) |
DE (1) | DE69933869T2 (de) |
HK (1) | HK1038840B (de) |
WO (1) | WO1999066649A1 (de) |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6249539B1 (en) * | 1998-06-15 | 2001-06-19 | Qualcomm Incorporated | System and method for narrowing the range of frequency uncertainty of a doppler shifted signal |
US6765953B1 (en) * | 1998-09-09 | 2004-07-20 | Qualcomm Incorporated | User terminal parallel searcher |
US6373882B1 (en) | 1998-11-06 | 2002-04-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Motion estimator for a CDMA mobile station |
US6621850B1 (en) * | 1998-12-21 | 2003-09-16 | Nortel Networks Limited | Block detection receiver |
US6668011B1 (en) | 1998-12-21 | 2003-12-23 | Nortel Networks Limited | Block detection receiver |
JP2000201101A (ja) * | 1999-01-07 | 2000-07-18 | Fujitsu Ltd | 拡散通信システムとその移動機 |
GB2359456B (en) * | 2000-02-19 | 2003-09-17 | Nec Technologies | Method for frequency offset estimation in a direct sequence spread spectrum communications receiver |
JP2002057609A (ja) * | 2000-08-10 | 2002-02-22 | Honda Motor Co Ltd | 移動体衛星通信システム |
GB2368751B (en) * | 2000-09-20 | 2004-04-21 | Nec Technologies | Removal of reference frequency offset of a local oscillator in a telecommunications receiver |
GB2367212B (en) | 2000-09-20 | 2004-07-07 | Nec Technologies | Evaluation of UMTS mobile receiver reference |
KR100525543B1 (ko) * | 2000-12-29 | 2005-10-31 | 엘지전자 주식회사 | 트랙킹 기능을 가진 프레임 동기화 및 코드 그룹 검출기 |
GB0107578D0 (en) * | 2001-03-27 | 2001-05-16 | Koninl Philips Electronics Nv | Radio communication system |
US6993337B2 (en) * | 2001-03-30 | 2006-01-31 | Lucent Technologies Inc. | Velocity based scheduling in cellular systems |
JP3884244B2 (ja) * | 2001-07-04 | 2007-02-21 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Rf送信回路およびmri装置 |
US6954508B2 (en) * | 2001-08-01 | 2005-10-11 | Sony Corporation | Automatic frequency control system adapted to compensate for an insufficient capture range |
FI120071B (fi) * | 2001-09-14 | 2009-06-15 | Nokia Corp | Menetelmä mittausten suorittamiseksi langattomassa päätelaitteessa ja langaton päätelaite |
KR100830495B1 (ko) * | 2001-12-29 | 2008-05-21 | 엘지전자 주식회사 | 도플러 천이 추정 방법 및 이를 이용한 데이터 전송 방법 |
US7738533B2 (en) * | 2002-01-07 | 2010-06-15 | Qualcomm Incorporated | Multiplexed CDMA and GPS searching |
US7266156B2 (en) * | 2002-04-26 | 2007-09-04 | Qualcomm Incorporated | Method and apparatus for reducing peak to average power ratio of a multi-carrier signal |
US7593367B2 (en) * | 2002-06-14 | 2009-09-22 | Qualcomm Incorporated | Frequency scan for CDMA acquisition |
US6836506B2 (en) * | 2002-08-27 | 2004-12-28 | Qualcomm Incorporated | Synchronizing timing between multiple air link standard signals operating within a communications terminal |
US7760765B2 (en) * | 2003-05-31 | 2010-07-20 | Qualcomm, Incorporated | System and method for the reacquisition of a gated pilot |
WO2005027451A1 (en) * | 2003-09-12 | 2005-03-24 | Ems Technologies Canada, Ltd. | Joint synchronizer and decoder |
US7302379B2 (en) * | 2003-12-07 | 2007-11-27 | Adaptive Spectrum And Signal Alignment, Inc. | DSL system estimation and parameter recommendation |
US7702002B2 (en) | 2004-01-28 | 2010-04-20 | Qualcomm Incorporated | Rapid acquisition methods and apparatus for GPS signals |
US8144821B2 (en) * | 2005-03-24 | 2012-03-27 | Qualcomm Incorporated | CDMA frequency acquisition using a simplified crystal oscillator that is not temperature compensated |
US7609755B2 (en) * | 2005-07-28 | 2009-10-27 | Itt Manufacturing Enterprises, Inc. | Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals |
KR100771194B1 (ko) * | 2005-08-29 | 2007-10-30 | 삼성탈레스 주식회사 | 직접 시퀀스 확산 대역 버스트 무선 통신 시스템에서타이밍 동기를 획득하는 장치 |
US8027373B2 (en) * | 2005-09-15 | 2011-09-27 | Qualcomm Incorporated | Quick detection of signaling in a wireless communication system |
US8379721B2 (en) * | 2005-09-22 | 2013-02-19 | Qualcomm Incorported | Two pass rate control techniques for video coding using a min-max approach |
EP1958406A1 (de) * | 2005-12-01 | 2008-08-20 | Thomson Licensing | Verfahren und vorrichtung zur frequenzoffsetbestimmung in einem empfänger |
US8064414B2 (en) * | 2005-12-13 | 2011-11-22 | Qualcomm, Incorporated | Range extension techniques for a wireless local area network |
US8130726B2 (en) * | 2005-12-20 | 2012-03-06 | Qualcomm Incorporated | Coarse bin frequency synchronization in a communication system |
US7634033B1 (en) | 2006-02-10 | 2009-12-15 | L-3 Communications, Corp. | Spread spectrum detection system and method |
US7633995B1 (en) | 2006-02-10 | 2009-12-15 | L-3 Communications, Corp. | System and method for receiving spread spectrum encoded bursts using a common spreading code |
US7664164B1 (en) | 2006-02-10 | 2010-02-16 | L-3 Communications, Corp. | Correlation apparatus and method for accomodating spreading code frequency offset |
WO2008094701A1 (en) * | 2007-01-31 | 2008-08-07 | Signal Labs, Inc. | System and methods for multistep target detection and parameter estimation |
US7800536B2 (en) * | 2007-10-11 | 2010-09-21 | Mediatek, Inc. | Signal acquisition/tracking method and correlator for the same |
US7990929B2 (en) * | 2007-11-27 | 2011-08-02 | Harris Corporation | Wireless communications device including rake finger stage providing frequency correction and related methods |
US20090135799A1 (en) * | 2007-11-27 | 2009-05-28 | Harris Corporation | Wireless communications device including path searcher with common coherent correlator and related methods |
US8699544B2 (en) * | 2008-05-02 | 2014-04-15 | Futurewei Technologies, Inc. | System and method for wireless communications |
US8244183B2 (en) * | 2008-08-12 | 2012-08-14 | Qualcomm Incorporated | Concurrent sync channel searching |
FR2936669B1 (fr) | 2008-09-26 | 2011-11-25 | Thales Sa | Procede pour optimiser une acquisition d'un signal a spectre etale provenant d'un satellite par un recepteur mobile |
US8369279B2 (en) | 2010-03-10 | 2013-02-05 | Broadcom Corporation | Method and system for iterative multiple frequency hypothesis testing with cell-ID detection in an E-UTRA/LTE UE receiver |
US8917704B2 (en) | 2009-12-18 | 2014-12-23 | Broadcom Corporation | Method and system for automatically rescaling an accumulation buffer in synchronization systems |
US8576830B2 (en) * | 2010-04-02 | 2013-11-05 | Broadcom Corporation | Method and system for tracking timing drift in multiple frequency hypothesis testing |
US9214945B2 (en) * | 2012-02-27 | 2015-12-15 | Realtek Semiconductor Corp. | Digital phase lock loop and method thereof |
US20150094082A1 (en) * | 2013-09-30 | 2015-04-02 | Qualcomm Incorporated | Channel estimation using cyclic correlation |
JP6360354B2 (ja) * | 2014-05-23 | 2018-07-18 | 国立研究開発法人海洋研究開発機構 | 受信装置および受信方法 |
US9900856B2 (en) * | 2015-03-20 | 2018-02-20 | Qualcomm Incorporated | Method and apparatus for time or frequency synchronization in non-geosynchronous satellite communication systems |
FR3072780B1 (fr) * | 2017-10-25 | 2020-08-28 | Airbus Defence & Space Sas | Procede et dispositif recepteur pour l’estimation d’un decalage frequentiel et d’une derive frequentielle d’un signal utile |
CN112333757B (zh) * | 2020-10-15 | 2022-11-08 | 成都市以太节点科技有限公司 | 一种无线通信测试方法及*** |
KR20220056732A (ko) | 2020-10-28 | 2022-05-06 | 재단법인대구경북과학기술원 | 도플러 효과에 기반한 전력 감쇄 분석 시스템 및 그 방법 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737900A (en) | 1967-09-25 | 1973-06-05 | Rockwell International Corp | Digital doppler processor |
US3864634A (en) | 1973-10-01 | 1975-02-04 | Us Navy | Doppler correction circuit |
US4653076A (en) | 1984-03-23 | 1987-03-24 | Sangamo Weston, Inc. | Timing signal correction system for use in direct sequence spread signal receiver |
US4567588A (en) | 1984-03-23 | 1986-01-28 | Sangamo Weston, Inc. | Synchronization system for use in direct sequence spread spectrum signal receiver |
US4621365A (en) | 1984-11-16 | 1986-11-04 | Hughes Aircraft Company | Synchronization preamble correlation detector and frequency estimator |
DE58907319D1 (de) | 1988-04-14 | 1994-05-05 | Ant Nachrichtentech | Verfahren und Anordnung zum Reduzieren von Frequenzablagen beim Mobilfunk über Satellit. |
US5095538A (en) | 1989-09-29 | 1992-03-10 | Motorola, Inc. | Calibrated method and device for narrow band Doppler compensation |
JP2953260B2 (ja) | 1993-07-05 | 1999-09-27 | ケイディディ株式会社 | 周波数オフセット補償方法 |
US5490165A (en) | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
US5432521A (en) | 1994-01-14 | 1995-07-11 | Motorola, Inc. | Satellite receiver system having doppler frequency shift tracking |
US5696797A (en) | 1994-07-22 | 1997-12-09 | Motorola, Inc. | Demodulator with baseband doppler shift compensation and method |
US5742908A (en) | 1994-09-14 | 1998-04-21 | Ericsson Inc. | Frequency error correction in a satellite-mobile communications system |
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 |
US5577025A (en) | 1995-06-30 | 1996-11-19 | Qualcomm Incorporated | Signal acquisition in a multi-user communication system using multiple walsh channels |
US6023477A (en) * | 1996-12-18 | 2000-02-08 | Ericsson Inc. | System and method of time and frequency synchronization in a radiocommunication system |
US6249539B1 (en) * | 1998-06-15 | 2001-06-19 | Qualcomm Incorporated | System and method for narrowing the range of frequency uncertainty of a doppler shifted signal |
JP5577025B2 (ja) * | 2007-03-30 | 2014-08-20 | ユニバーサル製缶株式会社 | ねじ付き缶用上塗り外面塗料組成物及びねじ付き缶 |
JP5432521B2 (ja) * | 2008-12-25 | 2014-03-05 | 出光興産株式会社 | ガソリン組成物 |
-
1998
- 1998-06-15 US US09/097,842 patent/US6249539B1/en not_active Expired - Lifetime
-
1999
- 1999-06-14 WO PCT/US1999/013552 patent/WO1999066649A1/en active IP Right Grant
- 1999-06-14 AT AT99937159T patent/ATE344552T1/de not_active IP Right Cessation
- 1999-06-14 EP EP99937159A patent/EP1088400B1/de not_active Expired - Lifetime
- 1999-06-14 CA CA002335136A patent/CA2335136A1/en not_active Abandoned
- 1999-06-14 KR KR1020007014285A patent/KR100693683B1/ko not_active IP Right Cessation
- 1999-06-14 JP JP2000555373A patent/JP4194759B2/ja not_active Expired - Lifetime
- 1999-06-14 DE DE69933869T patent/DE69933869T2/de not_active Expired - Lifetime
- 1999-06-14 AU AU52043/99A patent/AU760427B2/en not_active Ceased
- 1999-06-14 CN CNB998096814A patent/CN1158785C/zh not_active Expired - Lifetime
-
2001
- 2001-06-19 US US09/885,755 patent/US6831940B2/en not_active Expired - Fee Related
-
2002
- 2002-01-02 HK HK02100008.8A patent/HK1038840B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE344552T1 (de) | 2006-11-15 |
JP2002518930A (ja) | 2002-06-25 |
US20010043641A1 (en) | 2001-11-22 |
WO1999066649A1 (en) | 1999-12-23 |
HK1038840B (zh) | 2005-04-01 |
EP1088400A1 (de) | 2001-04-04 |
CN1312979A (zh) | 2001-09-12 |
AU5204399A (en) | 2000-01-05 |
JP4194759B2 (ja) | 2008-12-10 |
DE69933869T2 (de) | 2007-06-21 |
CN1158785C (zh) | 2004-07-21 |
CA2335136A1 (en) | 1999-12-23 |
HK1038840A1 (en) | 2002-03-28 |
KR20010072616A (ko) | 2001-07-31 |
EP1088400B1 (de) | 2006-11-02 |
AU760427B2 (en) | 2003-05-15 |
US6831940B2 (en) | 2004-12-14 |
US6249539B1 (en) | 2001-06-19 |
KR100693683B1 (ko) | 2007-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69933869D1 (de) | Verfahren und vorrichtung zur einschränkung des frequenz-unsicherheitsbereiches eines doppler-verschobenen signals | |
USRE38808E1 (en) | Cellular positioning system (CPS) | |
US5701328A (en) | Chirped spread spectrum positioning system | |
KR100672266B1 (ko) | 위성 측위 시스템 신호를 포착하는 방법 및 장치 | |
CN1979216B (zh) | 估算无线通信***中终端的速度的方法和设备 | |
HK1044377A1 (en) | Method and apparatus for measurement processing ofsatellite positioning system (sps) signals | |
GB2439901A (en) | Augmentation of commercial wireless location system (wls) with moving and/or airborne sensors for enhanced location accuracy and use of real-tme overhead imag | |
KR970071417A (ko) | 인공 위성에 기초한 전자 통신 시스템을 위한 지리적 위치 측정 방법 | |
KR19990029722A (ko) | 무선 단말기 및 무선 단말기 작동 방법 | |
KR19990029723A (ko) | 보조 시스템 및 보조 시스템 작동 방법 | |
US7432852B2 (en) | Method of synchronizing base stations of a terrestrial cellular communication network | |
KR100617787B1 (ko) | 고속 퓨리에 변환을 이용하여 방해전파를 검출하는전세계위치확인 시스템 수신기 및 방법 | |
DE60238392D1 (de) | Verfahren und vorrichtung zur schätzung der dopplerspreizung | |
WO2001075473A3 (en) | Enhanced gps receiver utilizing wireless infrastructure | |
JP2009042215A (ja) | 統合サービスデジタル放送−地上波(isdb−t)放送テレビジョン信号を使用した位置評定 | |
US20020160787A1 (en) | Communications system and related method for determining a position of a mobile station | |
US7538725B2 (en) | GPS positioning method and GPS position device | |
JP2005512103A (ja) | 地上波デジタル統合放送サービス(isdb−t)テレビ放送信号を利用した位置標定 | |
Nypan et al. | Vehicle positioning by database comparison using the Box-Cox metric and Kalman filtering | |
Soliman et al. | GPS receiver sensitivity enhancement in wireless applications | |
KR100880716B1 (ko) | 총 수신 전력을 이용한 과도 지연 추정 | |
KR100398147B1 (ko) | 이동통신 시스템에서 역방향 파일롯 신호를 이용하여이동국의 위치를 추정하는 방법 | |
JP2004032124A (ja) | セルラ基地局の送信タイミングのオフセット測定方法および測定システム | |
Kim et al. | A local positioning system based on VHF band | |
RU96113734A (ru) | Способ определения динамического диапазона приемника аппаратуры радиотехнической разведки |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent |