CN1112013C - 搜索监听声的方法 - Google Patents
搜索监听声的方法 Download PDFInfo
- Publication number
- CN1112013C CN1112013C CN98809730A CN98809730A CN1112013C CN 1112013 C CN1112013 C CN 1112013C CN 98809730 A CN98809730 A CN 98809730A CN 98809730 A CN98809730 A CN 98809730A CN 1112013 C CN1112013 C CN 1112013C
- Authority
- CN
- China
- Prior art keywords
- signal
- symbols
- pulse train
- symbol
- value
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/042—Detectors therefor, e.g. correlators, state machines
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)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19743191 | 1997-09-30 | ||
DE19743191.7 | 1997-09-30 | ||
DE19748030A DE19748030C2 (de) | 1997-09-30 | 1997-10-30 | Verfahren zur Suche nach Pilottönen |
DE19748030.6 | 1997-10-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1272995A CN1272995A (zh) | 2000-11-08 |
CN1112013C true CN1112013C (zh) | 2003-06-18 |
Family
ID=26040452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN98809730A Expired - Fee Related CN1112013C (zh) | 1997-09-30 | 1998-09-18 | 搜索监听声的方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6389089B1 (zh) |
EP (1) | EP1020058B1 (zh) |
JP (1) | JP3462175B2 (zh) |
CN (1) | CN1112013C (zh) |
WO (1) | WO1999017510A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6587695B1 (en) * | 1999-10-27 | 2003-07-01 | Nokia Mobile Phones Limited | Method and apparatus for distinguishing a compact control channel from a classic control channel |
CN103441821B (zh) * | 2013-09-03 | 2016-08-17 | 天津七一二通信广播有限公司 | 一种数字亚音频弱信号处理方法 |
CN111783567B (zh) * | 2020-06-16 | 2023-07-25 | 西安外事学院 | 一种基于极值标识的时间序列分类方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4896336A (en) * | 1988-08-29 | 1990-01-23 | Rockwell International Corporation | Differential phase-shift keying demodulator |
DE59003646D1 (de) * | 1989-03-16 | 1994-01-13 | Siemens Ag | Schaltung zur Erkennung eines Frequenzreferenzsignals. |
US5151926A (en) * | 1991-05-21 | 1992-09-29 | General Electric Company | Sample timing and carrier frequency estimation circuit for sine-cosine detectors |
US5390216A (en) * | 1991-11-02 | 1995-02-14 | Robert Bosch Gmbh | Synchronization method for a mobile radiotelephone |
DE59208453D1 (de) * | 1991-12-07 | 1997-06-12 | Philips Patentverwaltung | Mobilfunkempfänger dessen verbesserte Anfangssysnchronisation mit einer Feststation durch Frequenzschätzung mittels Impulserkennung erreicht wird |
KR960011125B1 (ko) * | 1993-01-30 | 1996-08-20 | 삼성전자 주식회사 | 시분할 다중 통신 채널용 디지탈 복조 회로 |
US5828705A (en) * | 1996-02-01 | 1998-10-27 | Kroeger; Brian W. | Carrier tracking technique and apparatus having automatic flywheel/tracking/reacquisition control and extended signal to noise ratio |
US6104767A (en) * | 1997-11-17 | 2000-08-15 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for estimating a frequency offset |
-
1998
- 1998-09-18 EP EP98956779A patent/EP1020058B1/de not_active Expired - Lifetime
- 1998-09-18 CN CN98809730A patent/CN1112013C/zh not_active Expired - Fee Related
- 1998-09-18 WO PCT/DE1998/002777 patent/WO1999017510A1/de active IP Right Grant
- 1998-09-18 JP JP2000514441A patent/JP3462175B2/ja not_active Expired - Fee Related
-
2000
- 2000-03-30 US US09/539,239 patent/US6389089B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1020058A1 (de) | 2000-07-19 |
CN1272995A (zh) | 2000-11-08 |
WO1999017510A1 (de) | 1999-04-08 |
JP2001518750A (ja) | 2001-10-16 |
US6389089B1 (en) | 2002-05-14 |
JP3462175B2 (ja) | 2003-11-05 |
EP1020058B1 (de) | 2002-04-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: INFINEON TECHNOLOGIES AG Free format text: FORMER OWNER: SIEMENS AG Effective date: 20120223 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20120223 Address after: Federal Republic of Germany City, Laura Ibiza Berger Patentee after: Infineon Technologies AG Address before: Munich, Germany Patentee before: Siemens AG |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030618 Termination date: 20170918 |
|
CF01 | Termination of patent right due to non-payment of annual fee |