DE68917608D1 - Mehrpunkt-Modem-System mit schneller Synchronisierung. - Google Patents
Mehrpunkt-Modem-System mit schneller Synchronisierung.Info
- Publication number
- DE68917608D1 DE68917608D1 DE68917608T DE68917608T DE68917608D1 DE 68917608 D1 DE68917608 D1 DE 68917608D1 DE 68917608 T DE68917608 T DE 68917608T DE 68917608 T DE68917608 T DE 68917608T DE 68917608 D1 DE68917608 D1 DE 68917608D1
- Authority
- DE
- Germany
- Prior art keywords
- modem system
- fast synchronization
- multipoint
- multipoint modem
- synchronization
- 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
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/10—Arrangements for initial synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
- H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Selective Calling Equipment (AREA)
- Small-Scale Networks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888800739A GB8800739D0 (en) | 1988-01-13 | 1988-01-13 | Multipoint modem system having fast synchronization |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68917608D1 true DE68917608D1 (de) | 1994-09-29 |
DE68917608T2 DE68917608T2 (de) | 1995-04-13 |
Family
ID=10629910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68917608T Expired - Fee Related DE68917608T2 (de) | 1988-01-13 | 1989-01-10 | Mehrpunkt-Modem-System mit schneller Synchronisierung. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4847880A (de) |
EP (1) | EP0324571B1 (de) |
DE (1) | DE68917608T2 (de) |
GB (1) | GB8800739D0 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3707760C1 (de) * | 1987-03-11 | 1988-06-23 | Ant Nachrichtentech | Verfahren zur Taktsynchronisation |
CA1305768C (en) * | 1987-11-16 | 1992-07-28 | Masanobu Arai | Digital signal receiving circuit with means for controlling a baud rate sampling phase by a power of sampled signals |
US5031195A (en) * | 1989-06-05 | 1991-07-09 | International Business Machines Corporation | Fully adaptive modem receiver using whitening matched filtering |
JP2682703B2 (ja) * | 1989-07-21 | 1997-11-26 | 富士通株式会社 | マルチポイント接続モデムのリトレーニング方式 |
US5127027A (en) * | 1989-11-09 | 1992-06-30 | Canon Kabushiki Kaisha | Training signal detecting apparatus |
JPH03173228A (ja) * | 1989-12-01 | 1991-07-26 | Canon Inc | モデム装置 |
US5052024A (en) * | 1990-05-23 | 1991-09-24 | Motorola, Inc. | Offset frequency multipoint modem and communications network |
CA2045338C (en) * | 1990-06-26 | 1995-07-04 | Shousei Yoshida | Clock recovery circuit with open-loop phase estimator and wideband phase tracking loop |
US5058139A (en) * | 1990-08-10 | 1991-10-15 | Siemens Medical Electronics, Inc. | Notch filter for digital transmission system |
FR2666946B1 (fr) * | 1990-09-17 | 1992-12-04 | Inst Francais Du Petrole | Methode et dispositif pour synchroniser sur un evenement exterieur, l'echantillonnage de signaux de mesure par un ensemble de numerisation du type a sur-echantillonnage. |
JP2721455B2 (ja) * | 1992-01-27 | 1998-03-04 | 富士通株式会社 | データ伝送装置のタイミング生成方法 |
JPH05316063A (ja) * | 1992-05-12 | 1993-11-26 | Fujitsu Ltd | 周波数多重モデムの多重制御方式 |
US5590160A (en) * | 1992-12-30 | 1996-12-31 | Nokia Mobile Phones Ltd. | Symbol and frame synchronization in both a TDMA system and a CDMA |
US5408504A (en) * | 1992-12-30 | 1995-04-18 | Nokia Mobile Phones | Symbol and frame synchronization in a TDMA system |
JP2826031B2 (ja) * | 1993-02-18 | 1998-11-18 | 富士通株式会社 | 変復調方式 |
US5444697A (en) * | 1993-08-11 | 1995-08-22 | The University Of British Columbia | Method and apparatus for frame synchronization in mobile OFDM data communication |
US5400368A (en) * | 1993-08-17 | 1995-03-21 | Teknekron Communications Systems, Inc. | Method and apparatus for adjusting the sampling phase of a digitally encoded signal in a wireless communication system |
US5528634A (en) * | 1993-11-18 | 1996-06-18 | Motorola, Inc. | Trajectory directed timing recovery |
FR2724512B1 (fr) * | 1994-09-14 | 1996-12-13 | Sgs Thomson Microelectronics | Dispositif d'identification d'une sequence predeterminee de signaux dans un modem |
US6334219B1 (en) | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
USRE42236E1 (en) | 1995-02-06 | 2011-03-22 | Adc Telecommunications, Inc. | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing |
US7280564B1 (en) | 1995-02-06 | 2007-10-09 | Adc Telecommunications, Inc. | Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing |
US5793821A (en) * | 1995-06-07 | 1998-08-11 | 3Com Corporation | Timing Recovery using group delay compensation |
US5760984A (en) * | 1995-10-20 | 1998-06-02 | Cirrus Logic, Inc. | Cost reduced interpolated timing recovery in a sampled amplitude read channel |
JPH10224271A (ja) * | 1997-02-12 | 1998-08-21 | Fujitsu Ltd | タイミング位相制御装置及びタイミング位相制御方法 |
US6304621B1 (en) * | 1998-05-13 | 2001-10-16 | Broadcom Corporation | Multi-mode variable rate digital cable receiver |
US6643321B1 (en) | 1998-09-30 | 2003-11-04 | Alvarion Ltd. | Method for rapid synchronization of a point to multipoint communication system |
USRE42661E1 (en) | 1999-04-12 | 2011-08-30 | V-Dot Technologies, Llc | Method and apparatus for fast V.90 modem startup |
US6819749B1 (en) * | 1999-04-12 | 2004-11-16 | Mindspeed Technologies, Inc. | Method and apparatus for fast V.90 modem startup |
US20050213647A1 (en) * | 2002-05-17 | 2005-09-29 | Agency For Science, Technology And Research | Flexible power line modem |
CN101040437B (zh) * | 2004-10-13 | 2010-05-12 | 联发科技股份有限公司 | 用于通信系统的滤波器以及滤波方法 |
US7394608B2 (en) | 2005-08-26 | 2008-07-01 | International Business Machines Corporation | Read channel apparatus for asynchronous sampling and synchronous equalization |
CN101442297B (zh) * | 2007-11-23 | 2011-06-08 | 深圳Tcl工业研究院有限公司 | 一种数字抽取滤波器 |
CN101442296B (zh) * | 2007-11-23 | 2011-11-16 | 深圳Tcl工业研究院有限公司 | 一种数字抽取滤波器 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4273955A (en) * | 1979-03-02 | 1981-06-16 | Paradyne Corporation | System for in-service quantitative performance analysis of data communications system |
US4301417A (en) * | 1980-03-12 | 1981-11-17 | Ncr Corporation | Quadriphase differential demodulator |
US4362997A (en) * | 1980-12-18 | 1982-12-07 | Ncr Corporation | Quadriphase differential demodulator |
US4453259A (en) * | 1982-04-20 | 1984-06-05 | Trw Inc. | Digital synchronization technique |
GB2134355B (en) * | 1983-01-12 | 1986-03-05 | Ncr Co | Circuit for reducing errors in a data receiver |
GB2133943B (en) * | 1983-01-12 | 1986-09-17 | Ncr Co | Automatic gain control circuit |
GB2153186B (en) * | 1984-01-13 | 1987-04-23 | Ncr Co | Digital data receiver including timing adjustment circuit |
NO852765L (no) * | 1984-07-24 | 1986-01-27 | Universal Data Systems Inc | Fremgangsmaate og apparat for automatisk identifisering av et svarende modem i et nettverk. |
US4707841A (en) * | 1984-08-21 | 1987-11-17 | University Of Toronto, Innovations Foundation | Digital data receiver for preamble free data transmission |
JPS6182545A (ja) * | 1984-08-29 | 1986-04-26 | Fujitsu Ltd | タイミング引込み方法 |
NO853772L (no) * | 1984-11-02 | 1986-05-05 | Universal Data Systems Inc | Fremgangsmaate for etablering av en kommunikasjonskanal, modem-kommunikasjonssystem og mikroprossesorstyrt modem. |
US4631733A (en) * | 1984-12-17 | 1986-12-23 | Honeywell Inc. | Transceiver |
US4644561A (en) * | 1985-03-20 | 1987-02-17 | International Mobile Machines Corp. | Modem for RF subscriber telephone system |
GB2175480B (en) * | 1985-05-21 | 1988-12-29 | Stc Plc | Demodulation of auxiliary low frequency channels in digital transmission systems |
JPH0614627B2 (ja) * | 1985-06-04 | 1994-02-23 | 富士通株式会社 | モデムのトレーニング方法 |
GB2212699B (en) * | 1987-11-16 | 1992-01-08 | Ncr Co | Multipoint data modem communication system |
-
1988
- 1988-01-13 GB GB888800739A patent/GB8800739D0/en active Pending
- 1988-08-18 US US07/234,068 patent/US4847880A/en not_active Expired - Lifetime
-
1989
- 1989-01-10 EP EP89300161A patent/EP0324571B1/de not_active Expired - Lifetime
- 1989-01-10 DE DE68917608T patent/DE68917608T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0324571A2 (de) | 1989-07-19 |
US4847880A (en) | 1989-07-11 |
GB8800739D0 (en) | 1988-02-10 |
EP0324571B1 (de) | 1994-08-24 |
EP0324571A3 (de) | 1991-01-16 |
DE68917608T2 (de) | 1995-04-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: V. BEZOLD & SOZIEN, 80799 MUENCHEN |
|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |