DE69827716D1 - Koheränte Demodulation von Spreizspektrumsignalen ohne Pilotensignal - Google Patents
Koheränte Demodulation von Spreizspektrumsignalen ohne PilotensignalInfo
- Publication number
- DE69827716D1 DE69827716D1 DE69827716T DE69827716T DE69827716D1 DE 69827716 D1 DE69827716 D1 DE 69827716D1 DE 69827716 T DE69827716 T DE 69827716T DE 69827716 T DE69827716 T DE 69827716T DE 69827716 D1 DE69827716 D1 DE 69827716D1
- Authority
- DE
- Germany
- Prior art keywords
- pilot signal
- spread spectrum
- spectrum signals
- coherent demodulation
- coherent
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- 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
-
- 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
- H04L2027/003—Correction of carrier offset at baseband only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710131A FR2767238B1 (fr) | 1997-08-07 | 1997-08-07 | Dispositifs monocanal et multicanaux de demodulation coherente sans pilote, et ensemble correspondant de reception a plusieurs chemins de diversite |
FR9710131 | 1997-08-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69827716D1 true DE69827716D1 (de) | 2004-12-30 |
DE69827716T2 DE69827716T2 (de) | 2005-11-24 |
Family
ID=9510124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69827716T Expired - Fee Related DE69827716T2 (de) | 1997-08-07 | 1998-07-30 | Koheränte Demodulation von Spreizspektrumsignalen ohne Pilotensignal |
Country Status (8)
Country | Link |
---|---|
US (1) | US6028888A (de) |
EP (1) | EP0899895B1 (de) |
JP (1) | JP4105807B2 (de) |
CN (1) | CN1168239C (de) |
AU (1) | AU739095B2 (de) |
CA (1) | CA2243447A1 (de) |
DE (1) | DE69827716T2 (de) |
FR (1) | FR2767238B1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100269593B1 (ko) * | 1997-12-02 | 2000-10-16 | 정선종 | 다중 채널을 위한 직교 복소 확산 방법 및 그 장치 |
KR20000039283A (ko) * | 1998-12-09 | 2000-07-05 | 채광묵 | 원격제어가가능한위치지시시스템 |
DE10027216B4 (de) * | 1999-05-31 | 2008-10-16 | Electronics And Telecommunications Research Institute | Vorrichtung und Verfahren zum Modulieren einer Datennachricht durch Verwendung von Codes mit orthogonalem veränderlichem Spreizungsfaktor (OVSF) in einem Mobilkommunikationssystem |
DE19942944A1 (de) * | 1999-09-08 | 2001-03-22 | Infineon Technologies Ag | Kommunikationssystem und entsprechender Empfänger |
DE19949007C1 (de) * | 1999-10-11 | 2001-02-08 | Bosch Gmbh Robert | Verfahren zum Empfang von Funksignalen in einer Mobilstation und Mobilstation |
KR100959321B1 (ko) | 2000-03-28 | 2010-05-26 | 인터디지탈 테크날러지 코포레이션 | 송신 전에 사전 회전을 이용하는 코드 분할 다중 접속 시스템 |
US7454743B2 (en) * | 2001-12-28 | 2008-11-18 | Sun Microsystems, Inc. | Java to SNMP MIB mapping |
WO2003103248A1 (en) * | 2002-05-31 | 2003-12-11 | Advanced Micro Devices, Inc. | Phase error correction using despread signals |
DE10224165A1 (de) * | 2002-05-31 | 2003-12-24 | Advanced Micro Devices Inc | Phasenfehlerkorrektur unter Verwendung entspreizter Signale |
JP2010212929A (ja) * | 2009-03-10 | 2010-09-24 | Sony Corp | 測定装置、再生装置、測定方法 |
US8576736B1 (en) | 2010-11-10 | 2013-11-05 | Sprint Spectrum L.P. | Method and system for spread spectrum signal acquisition without a pilot signal |
WO2012141690A1 (en) | 2011-04-12 | 2012-10-18 | Hewlett-Packard Development Company, L.P. | Data and digital control communication over power |
US9432133B2 (en) | 2015-02-03 | 2016-08-30 | Keysight Technologies, Inc. | Vector signal generator channel characterization employing orthogonal modulation |
CN108449084B (zh) * | 2018-02-11 | 2020-06-30 | 中国科学院高能物理研究所 | 一种数字bpm采样数据多通道相位自动校正的方法及系统 |
CN108731708B (zh) * | 2018-04-24 | 2020-04-24 | 天津大学 | 可实现传感器任意通道匹配的多通道低相干干涉解调方法 |
FR3085568B1 (fr) * | 2018-08-31 | 2020-08-07 | Zodiac Data Systems | Procede de datation de signaux de telemesure |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4841544A (en) * | 1987-05-14 | 1989-06-20 | The Charles Stark Draper Laboratory, Inc. | Digital direct sequence spread spectrum receiver |
AU639308B2 (en) * | 1990-03-09 | 1993-07-22 | Sigtec Navigation Pty Ltd | G p s receiver |
US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5233626A (en) * | 1992-05-11 | 1993-08-03 | Space Systems/Loral Inc. | Repeater diversity spread spectrum communication system |
IT1272565B (it) * | 1993-09-03 | 1997-06-23 | Sits Soc It Telecom Siemens | Procedimento e dispositivo per la risoluzione dell'ambiguita' di fase in demodulatori con modulazione numerica codificata a traliccio e decodifica di viterbi |
CN1035586C (zh) * | 1993-10-13 | 1997-08-06 | Ntt移动通信网株式会社 | 扩频通信接收机 |
ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
JP3568284B2 (ja) * | 1995-08-22 | 2004-09-22 | 松下電器産業株式会社 | 復調方法および復調装置 |
-
1997
- 1997-08-07 FR FR9710131A patent/FR2767238B1/fr not_active Expired - Fee Related
-
1998
- 1998-07-30 DE DE69827716T patent/DE69827716T2/de not_active Expired - Fee Related
- 1998-07-30 EP EP98401948A patent/EP0899895B1/de not_active Expired - Lifetime
- 1998-08-05 AU AU78806/98A patent/AU739095B2/en not_active Ceased
- 1998-08-06 CA CA002243447A patent/CA2243447A1/fr not_active Abandoned
- 1998-08-06 US US09/129,899 patent/US6028888A/en not_active Expired - Lifetime
- 1998-08-07 CN CNB981162398A patent/CN1168239C/zh not_active Expired - Fee Related
- 1998-08-07 JP JP22506898A patent/JP4105807B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69827716T2 (de) | 2005-11-24 |
AU7880698A (en) | 1999-02-18 |
FR2767238B1 (fr) | 1999-10-01 |
AU739095B2 (en) | 2001-10-04 |
EP0899895B1 (de) | 2004-11-24 |
CN1168239C (zh) | 2004-09-22 |
US6028888A (en) | 2000-02-22 |
EP0899895A1 (de) | 1999-03-03 |
JP4105807B2 (ja) | 2008-06-25 |
FR2767238A1 (fr) | 1999-02-12 |
JPH11154932A (ja) | 1999-06-08 |
CN1219046A (zh) | 1999-06-09 |
CA2243447A1 (fr) | 1999-02-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: T&A MOBILE PHONES LTD., KOWLOON, HK |
|
8339 | Ceased/non-payment of the annual fee |