DE3689292D1 - Modem-Übertragungssystem und Verfahren mit Trainingsmitteln. - Google Patents
Modem-Übertragungssystem und Verfahren mit Trainingsmitteln.Info
- Publication number
- DE3689292D1 DE3689292D1 DE86107506T DE3689292T DE3689292D1 DE 3689292 D1 DE3689292 D1 DE 3689292D1 DE 86107506 T DE86107506 T DE 86107506T DE 3689292 T DE3689292 T DE 3689292T DE 3689292 D1 DE3689292 D1 DE 3689292D1
- Authority
- DE
- Germany
- Prior art keywords
- transmission system
- training aids
- modem transmission
- modem
- aids
- 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
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
- H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
- H04L2025/03783—Details of reference signals
-
- 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
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Communication Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60120840A JPH0614627B2 (ja) | 1985-06-04 | 1985-06-04 | モデムのトレーニング方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3689292D1 true DE3689292D1 (de) | 1993-12-23 |
DE3689292T2 DE3689292T2 (de) | 1994-03-03 |
Family
ID=14796260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE86107506T Expired - Fee Related DE3689292T2 (de) | 1985-06-04 | 1986-06-03 | Modem-Übertragungssystem und Verfahren mit Trainingsmitteln. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4868850A (de) |
EP (1) | EP0204308B1 (de) |
JP (1) | JPH0614627B2 (de) |
AU (1) | AU567637B2 (de) |
CA (1) | CA1246260A (de) |
DE (1) | DE3689292T2 (de) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2209648B (en) * | 1987-09-10 | 1991-10-23 | Ncr Co | Modem communication system having main and secondary channels |
GB2212699B (en) * | 1987-11-16 | 1992-01-08 | Ncr Co | Multipoint data modem communication system |
GB8800740D0 (en) * | 1988-01-13 | 1988-02-10 | Ncr Co | Data modem receiver |
GB8800739D0 (en) * | 1988-01-13 | 1988-02-10 | Ncr Co | Multipoint modem system having fast synchronization |
GB8805767D0 (en) * | 1988-03-10 | 1988-04-07 | Ncr Co | Phase perturbation compensation system |
EP0496677B1 (de) * | 1991-01-23 | 1997-07-09 | Fujitsu Limited | Adaptive Entzerrer |
US5222081A (en) * | 1991-06-28 | 1993-06-22 | Universal Data Systems, Inc. | Method of performing an autobaud function using a state flow machine |
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 |
US5394437A (en) * | 1992-10-20 | 1995-02-28 | At&T Corp. | High-speed modem synchronized to a remote CODEC |
GB2305337B (en) * | 1993-02-18 | 1997-08-20 | Fujitsu Ltd | Modulator apparatus |
JPH06244878A (ja) * | 1993-02-18 | 1994-09-02 | Fujitsu Ltd | 変復調装置 |
JP2826031B2 (ja) * | 1993-02-18 | 1998-11-18 | 富士通株式会社 | 変復調方式 |
JPH06244879A (ja) * | 1993-02-19 | 1994-09-02 | Fujitsu Ltd | 特殊トレーニングパターンを用いた変復調方式 |
FI97836C (fi) * | 1994-10-31 | 1997-02-25 | Nokia Telecommunications Oy | Menetelmä tietoliikenneyhteyden muodostamiseksi |
JP3266432B2 (ja) * | 1994-12-20 | 2002-03-18 | 富士通株式会社 | 非ナイキスト伝送方式でのトレーニング方法及び非ナイキスト伝送方式のトレーニングデータ送信装置 |
US5828696A (en) * | 1995-03-30 | 1998-10-27 | Lucent Technologies Inc. | Timing recovery in a network-synchronized modem |
US5757849A (en) * | 1995-03-30 | 1998-05-26 | Lucent Technologies Inc. | Timing recovery in a network-synchronized modem |
US5682341A (en) * | 1995-04-19 | 1997-10-28 | Korea Advanced Institute Of Science And Technology | Adaptive signal processor using Newton/LMS algorithm |
US5727031A (en) * | 1995-06-30 | 1998-03-10 | Telefonaktiebolaget Lm Ericsson | Adaptive gain controller |
US6337855B1 (en) | 1996-11-13 | 2002-01-08 | Nokia Telecommunications Oy | Method, transmitter and receiver for transmitting training signals in a TDMA transmission system |
US6075814A (en) * | 1997-05-09 | 2000-06-13 | Broadcom Homenetworking, Inc. | Method and apparatus for reducing signal processing requirements for transmitting packet-based data with a modem |
US6584147B1 (en) | 1997-05-23 | 2003-06-24 | Imec | High speed modem for a communication network |
EP0887974A1 (de) * | 1997-06-23 | 1998-12-30 | Interuniversitair Micro-Elektronica Centrum Vzw | Kopfendempfänger für Baumnetzwerken |
US6243428B1 (en) * | 1997-06-11 | 2001-06-05 | Ericsson Inc. | Method and apparatus for band-adaptive demodulation |
US6185251B1 (en) * | 1998-03-27 | 2001-02-06 | Telefonaktiebolaget Lm Ericsson | Equalizer for use in multi-carrier modulation systems |
JP2000032069A (ja) * | 1998-07-08 | 2000-01-28 | Nec Corp | パケット構成方法及びパケット受信器 |
JP2000069114A (ja) * | 1998-08-20 | 2000-03-03 | Fujitsu Ltd | 瞬断対策方法及びデータ伝送装置 |
EP0998083A1 (de) * | 1998-10-30 | 2000-05-03 | Ascom Systec AG | Verfahren zum Entzerren, insbesondere für Offset-Modulationsarten |
US6425091B1 (en) * | 1999-02-03 | 2002-07-23 | Motorola, Inc. | Method and apparatus for tolerating scheduling latency and achieving time alignment for transmit and receive signals in high-speed modems implemented on host processors |
US7099349B1 (en) * | 1999-03-10 | 2006-08-29 | Qwest Communications International Inc. | xDSL-based communication system |
US6185250B1 (en) * | 1999-03-10 | 2001-02-06 | Lucent Technologies Inc. | Training of level learning modems |
US6603958B1 (en) * | 2000-02-09 | 2003-08-05 | Nortel Networks Limited | Method and apparatus for a carrier frequency control in a wireless communication system |
US6879630B2 (en) * | 2000-03-30 | 2005-04-12 | Hitachi Kokusai Electric Inc. | Automatic equalization circuit and receiver circuit using the same |
JP2003204291A (ja) * | 2002-01-07 | 2003-07-18 | Nec Corp | 通信システム |
US7668237B2 (en) * | 2002-02-22 | 2010-02-23 | Harman Becker Automotive Systems Gmbh | Equalizer containing a plurality of interference correcting equalizer sections |
US7660344B2 (en) * | 2002-06-28 | 2010-02-09 | Bwa Technology, Inc. | AGC fine-tuning by the adaptive time domain equalizer |
RU2542669C1 (ru) * | 2013-07-23 | 2015-02-20 | Открытое акционерное общество "Калужский научно-исследовательский институт телемеханических устройств" | Способ кодовой цикловой синхронизации блоков информации для диапазона фиксированных скоростей работы в канале связи |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2861257A (en) * | 1953-09-22 | 1958-11-18 | Itt | Power line relaying |
US3962637A (en) * | 1974-11-11 | 1976-06-08 | Hycom Incorporated | Ultrafast adaptive digital modem |
DE2757171C3 (de) * | 1977-12-22 | 1980-07-10 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren und Anordnung zur Übertragung zweier unterschiedlicher Informationen in einem einzigen Übertragungskanal vorgegebener Bandbreite auf einer Trägerwelle |
JPS58121838A (ja) * | 1981-12-28 | 1983-07-20 | Fujitsu Ltd | 自動等化器 |
US4638496A (en) * | 1982-02-11 | 1987-01-20 | Jensen Garold K | Secure reliable transmitting and receiving system for transfer of digital data |
US4462108A (en) * | 1982-08-02 | 1984-07-24 | Trw Inc. | Modem signal acquisition technique |
JPS5980026A (ja) * | 1982-10-30 | 1984-05-09 | Nec Corp | トレ−ニング検出回路 |
US4597089A (en) * | 1983-07-11 | 1986-06-24 | Hycom Incorporated | Single pulse fast learn modem |
-
1985
- 1985-06-04 JP JP60120840A patent/JPH0614627B2/ja not_active Expired - Fee Related
-
1986
- 1986-06-02 AU AU58248/86A patent/AU567637B2/en not_active Ceased
- 1986-06-03 EP EP86107506A patent/EP0204308B1/de not_active Expired - Lifetime
- 1986-06-03 DE DE86107506T patent/DE3689292T2/de not_active Expired - Fee Related
- 1986-06-03 CA CA000510739A patent/CA1246260A/en not_active Expired
- 1986-06-04 US US06/870,499 patent/US4868850A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU5824886A (en) | 1987-01-08 |
DE3689292T2 (de) | 1994-03-03 |
EP0204308A3 (en) | 1988-11-30 |
AU567637B2 (en) | 1987-11-26 |
CA1246260A (en) | 1988-12-06 |
EP0204308A2 (de) | 1986-12-10 |
US4868850A (en) | 1989-09-19 |
JPS61278219A (ja) | 1986-12-09 |
JPH0614627B2 (ja) | 1994-02-23 |
EP0204308B1 (de) | 1993-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |