DE68927010T2 - Adaptive steuerung der datenrate für ein modem mit echokompensation - Google Patents
Adaptive steuerung der datenrate für ein modem mit echokompensationInfo
- Publication number
- DE68927010T2 DE68927010T2 DE68927010T DE68927010T DE68927010T2 DE 68927010 T2 DE68927010 T2 DE 68927010T2 DE 68927010 T DE68927010 T DE 68927010T DE 68927010 T DE68927010 T DE 68927010T DE 68927010 T2 DE68927010 T2 DE 68927010T2
- Authority
- DE
- Germany
- Prior art keywords
- echocompensation
- modem
- data rate
- rate control
- adaptive data
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
- H04L1/002—Algorithms with memory of the previous states, e.g. Markovian models
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
- H04B3/235—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers combined with adaptive equaliser
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
- H04B3/238—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using initial training sequence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
- H04L5/1446—Negotiation of transmission parameters prior to communication of transmission speed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/279,370 US5007047A (en) | 1988-12-02 | 1988-12-02 | Adaptive rate control for echo cancelling modem |
PCT/US1989/005450 WO1990006637A1 (en) | 1988-12-02 | 1989-12-04 | Adaptive rate control for echo cancelling modem |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68927010D1 DE68927010D1 (de) | 1996-09-26 |
DE68927010T2 true DE68927010T2 (de) | 1997-03-20 |
Family
ID=23068665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68927010T Expired - Lifetime DE68927010T2 (de) | 1988-12-02 | 1989-12-04 | Adaptive steuerung der datenrate für ein modem mit echokompensation |
Country Status (8)
Country | Link |
---|---|
US (1) | US5007047A (de) |
EP (1) | EP0446276B1 (de) |
JP (1) | JPH05506336A (de) |
AU (1) | AU630908B2 (de) |
CA (1) | CA2004476A1 (de) |
DE (1) | DE68927010T2 (de) |
HK (1) | HK1008409A1 (de) |
WO (1) | WO1990006637A1 (de) |
Families Citing this family (64)
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US5251313A (en) * | 1990-11-19 | 1993-10-05 | Ag Communication Systems Corporation | Method of bit rate adaption using the ECMA 102 protocol |
US5153875A (en) * | 1991-03-25 | 1992-10-06 | Level One Communications, Inc. | Adaptive balancing network |
FR2680293B1 (fr) * | 1991-08-09 | 1993-11-12 | Sgs Thomson Microelectronics Sa | Annuleur d'echo lointain. |
US6167539A (en) * | 1991-11-14 | 2000-12-26 | Canon Kabushiki Kaisha | Transmitting apparatus with code formation based on detected transmission channel data |
US5394392A (en) * | 1992-12-14 | 1995-02-28 | At&T Corp. | Method for transferring information using modems |
CA2125511A1 (en) * | 1993-06-14 | 1994-12-15 | Gordon Bremer | Autorate method for simultaneous transmission of voice and data |
US5436930A (en) * | 1993-06-14 | 1995-07-25 | At&T Corp. | Simultaneous analog and digital communications with a selection of different signal point constellations based on signal energy |
US5450438A (en) * | 1993-07-26 | 1995-09-12 | At&T Corp. | Fallback method to 1200 bits per second for use in mobile radio |
EP0643507A1 (de) * | 1993-09-13 | 1995-03-15 | Philips Communication D'entreprise | Anordnung und Verfahren zur Anpassung der Übertragungsrate an die Verbindungsqualität und ein für den Einsatz in einem solchen System geeignetes Modem |
DE69431557T2 (de) * | 1993-09-20 | 2003-02-20 | Codex Corp | Dynamische ratenanpassung zur ueberlastregelung in kommunikationsnetzwerken |
US5579305A (en) * | 1994-02-09 | 1996-11-26 | U.S. Robotics, Inc. | Asymmetric duplex modem utilizing narrow band echo cancellation |
US5606581A (en) * | 1994-03-17 | 1997-02-25 | Myers; Glen A. | Method and apparatus for the cancellation of interference in electrical systems |
US20050145682A1 (en) * | 1994-05-10 | 2005-07-07 | Laser Substrates, Inc. | Document enclosure mailing form for non-impact printing |
US5488640A (en) * | 1994-08-31 | 1996-01-30 | Motorola, Inc. | Method and apparatus for re-establishment of a communication |
US5687188A (en) * | 1994-10-11 | 1997-11-11 | Motorola, Inc. | Method of producing an adjusted metric |
US5974106A (en) * | 1995-09-01 | 1999-10-26 | Motorola, Inc. | Method and apparatus for multirate data communications |
US5812537A (en) * | 1995-09-29 | 1998-09-22 | Paradyne Corporation | Echo canceling method and apparatus for data over cellular |
US5757813A (en) * | 1995-10-18 | 1998-05-26 | Telefonaktiebolaget Lm Ericsson | Method for achieving optimal channel coding in a communication system |
US5864714A (en) * | 1996-04-16 | 1999-01-26 | Comsys Communication & Signal Processing Ltd. | Communication system which dynamically switches sizes of sample buffer between first size for quick response time and second size for robustness to interrupt latency |
US5878098A (en) * | 1996-06-27 | 1999-03-02 | Motorola, Inc. | Method and apparatus for rate determination in a communication system |
JPH1065758A (ja) * | 1996-08-23 | 1998-03-06 | Sony Corp | データ伝送方法及び装置 |
US5864545A (en) * | 1996-12-06 | 1999-01-26 | Altocom, Inc. | System and method for improving convergence during modem training and reducing computational load during steady-state modem operations |
US5953658A (en) * | 1997-01-08 | 1999-09-14 | Paradyne Corporation | System and method for eliminating offset echo in a data connection over a cellular cordless telephone service |
US6167082A (en) * | 1997-03-06 | 2000-12-26 | Level One Communications, Inc. | Adaptive equalizers and methods for carrying out equalization with a precoded transmitter |
US5880645A (en) * | 1997-07-03 | 1999-03-09 | Level One Communications, Inc. | Analog adaptive equalizer with gain and filter correction |
DE19750047A1 (de) * | 1997-11-12 | 1999-05-20 | Bosch Gmbh Robert | Gerichtetes Nahbereichs-Kommunikationsverfahren (DSRC) und Transponder hierfür |
US6567464B2 (en) | 1998-07-24 | 2003-05-20 | Compaq Information Technologies Group, L.P. | Fast retrain based on communication profiles for a digital modem |
US6345071B1 (en) * | 1998-07-24 | 2002-02-05 | Compaq Computer Corporation | Fast retrain based on communication profiles for a digital modem |
US6452941B1 (en) * | 1998-09-16 | 2002-09-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system for alternating transmission of codec mode information |
US6658107B1 (en) | 1998-10-23 | 2003-12-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for providing echo suppression using frequency domain nonlinear processing |
US6553518B1 (en) * | 1999-03-08 | 2003-04-22 | International Business Machines Corporation | Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations |
US7003030B2 (en) | 1999-03-08 | 2006-02-21 | Lenovo (Singapore) Pte. Ltd. | Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem |
US6661837B1 (en) | 1999-03-08 | 2003-12-09 | International Business Machines Corporation | Modems, methods, and computer program products for selecting an optimum data rate using error signals representing the difference between the output of an equalizer and the output of a slicer or detector |
US6487243B1 (en) | 1999-03-08 | 2002-11-26 | International Business Machines Corporation | Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems |
US6137845A (en) * | 1999-04-16 | 2000-10-24 | Motorola, Inc. | Method of determining an encoding rate in a communication system |
US6661847B1 (en) | 1999-05-20 | 2003-12-09 | International Business Machines Corporation | Systems methods and computer program products for generating and optimizing signal constellations |
US6609151B1 (en) * | 1999-08-31 | 2003-08-19 | Intel Corporation | System for configuring a computer with or without an operating system to allow another computer to remotely exchange data and control the computer |
US6594306B1 (en) * | 1999-09-03 | 2003-07-15 | Motorola, Inc. | Method and apparatus for a start-up procedure for digital and analog modems utilizing pulse code modulation for data transmission |
US6760391B1 (en) * | 1999-09-14 | 2004-07-06 | Nortel Networks Limited | Method and apparatus for line rate control in a digital communications system |
US6826157B1 (en) | 1999-10-29 | 2004-11-30 | International Business Machines Corporation | Systems, methods, and computer program products for controlling data rate reductions in a communication device by using a plurality of filters to detect short-term bursts of errors and long-term sustainable errors |
US6650657B1 (en) | 1999-10-29 | 2003-11-18 | International Business Machines Corporation | Systems, methods and computer program products for identifying digital impairments in modem signals |
US6816545B1 (en) | 1999-10-29 | 2004-11-09 | International Business Machines Corporation | Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels |
US6754258B1 (en) | 1999-10-29 | 2004-06-22 | International Business Machines Corporation | Systems, methods and computer program products for averaging learned levels in the presence of digital impairments based on patterns |
US6823004B1 (en) | 1999-10-29 | 2004-11-23 | International Business Machines Corporation | Methods, systems and computer program products for monitoring performance of a modem during a connection |
US6611563B1 (en) | 1999-10-29 | 2003-08-26 | International Business Machines Corporation | Systems, methods and computer program products for data mode refinement of modem constellation points |
US6792004B1 (en) | 1999-10-29 | 2004-09-14 | International Business Machines Corporation | Systems, methods and computer program products for averaging learned levels in the presence of robbed-bit signaling based on proximity |
US6662322B1 (en) | 1999-10-29 | 2003-12-09 | International Business Machines Corporation | Systems, methods, and computer program products for controlling the error rate in a communication device by adjusting the distance between signal constellation points |
US6839382B1 (en) | 1999-10-29 | 2005-01-04 | International Business Machines Corporation | System, methods and computer program products for identifying digital impairments in modem signals using signature analysis and signal level comparison analysis |
US6792040B1 (en) | 1999-10-29 | 2004-09-14 | International Business Machines Corporation | Modems having a dual power mode capability and methods of operating same |
US6765955B1 (en) | 1999-10-29 | 2004-07-20 | International Business Machines Corporation | Methods, systems and computer program products establishing a communication configuration for a modem connection to compensate for echo noise |
US6823017B1 (en) | 1999-10-29 | 2004-11-23 | International Business Machines Corporation | Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points |
US6967995B1 (en) | 1999-10-29 | 2005-11-22 | International Business Machines Corporation | Methods, systems and computer program products for carrier drop detection using a variable threshold |
US6505222B1 (en) | 1999-10-29 | 2003-01-07 | International Business Machines Corporation | Systems methods and computer program products for controlling undesirable bias in an equalizer |
KR20020069265A (ko) * | 2000-01-25 | 2002-08-29 | 어웨어, 인크. | 에이디에스엘 모뎀에서 에코 제거기를 갱신하기 위해엘엠에스 방법을 이용하기 위한 시스템 및 방법 |
FI20001517A (fi) * | 2000-06-26 | 2001-12-27 | Nokia Networks Oy | Menetelmä ja järjestelmä tietoliikennesignaalien käsittelemiseen |
US6987782B2 (en) * | 2001-04-06 | 2006-01-17 | Agere Systems, Inc. | Method and apparatus for detecting robbed bit location in PCM modems and the like |
US20060203941A1 (en) * | 2002-07-01 | 2006-09-14 | Borran Mohammad J | Method and apparatus to establish for imperfect channel state information at a receiver |
US7123651B2 (en) * | 2002-07-31 | 2006-10-17 | Lsi Logic Corporation | Adaptable hybrid and selection method for ADSL modem data rate improvement |
US7889804B2 (en) * | 2003-05-30 | 2011-02-15 | Mohammad Jaber Borran | Partially coherent constellations for multiple-antenna systems |
US7826798B2 (en) | 2003-11-20 | 2010-11-02 | Intel Corporation | Trained data transmission for communication systems |
US7373112B2 (en) * | 2003-08-08 | 2008-05-13 | Intel Corporation | Trained data transmission for communication systems |
US7447232B2 (en) * | 2003-09-30 | 2008-11-04 | Intel Corporation | Data burst transmission methods in WLAN devices and systems |
US7738408B2 (en) * | 2004-01-09 | 2010-06-15 | Realtek Semiconductor Corp. | Transceiver for full duplex communication systems |
US10411980B2 (en) | 2016-09-20 | 2019-09-10 | Intel Corporation | Proactive path quality reporting in packet transmission |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
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US31253A (en) * | 1861-01-29 | Machine | ||
US3449716A (en) * | 1963-05-09 | 1969-06-10 | Sangamo Electric Co | Digital self-optimizing terminal |
US3534264A (en) * | 1966-04-15 | 1970-10-13 | Ibm | Adaptive digital communication system |
US3536840A (en) * | 1969-04-25 | 1970-10-27 | Computer Modem Corp | Digital data transmission system with a variable transmission rate |
SU392601A1 (ru) * | 1970-06-30 | 1973-07-27 | Авторы изобретени витель | УСТРОЙСТВО дл ПЕРЕДАЧИ ЧАСТОТНЫХ СИГНАЛОВ ПО ЭЛЕКТРИЧЕСКОЙ СИЛОВОЙ ЛИНИИ ПЕРЕМЕННОГО |
SU540388A1 (ru) * | 1974-07-17 | 1976-12-25 | Всесоюзный Научно-Исследовательский Институт Комплексной Автоматизации Мельоративных Систем | Устройство дл передачи сигналов по линии электропередачи |
CA1087266A (en) * | 1976-01-16 | 1980-10-07 | Reed H. Johnston | Method and apparatus for communication over electric power lines |
JPS5292413A (en) * | 1976-01-30 | 1977-08-03 | Toshiba Corp | Data transfer system |
US4188619A (en) * | 1978-08-17 | 1980-02-12 | Rockwell International Corporation | Transformer arrangement for coupling a communication signal to a three-phase power line |
JPS55108069A (en) * | 1979-02-13 | 1980-08-19 | Nippon Telegr & Teleph Corp <Ntt> | Multiprocessor processing system |
CH647361A5 (de) * | 1979-10-12 | 1985-01-15 | Zellweger Uster Ag | Verfahren und vorrichtung zur signalerkennung bei einem fernsteuersystem mit beeinflussung des nulldurchganges der netzwechselspannung. |
IL62566A0 (en) * | 1980-04-18 | 1981-06-29 | Kearney & Trecker Corp | Digital data transmission system |
JPS58140862A (ja) * | 1982-02-16 | 1983-08-20 | Toshiba Corp | 相互排他方式 |
JPS58219847A (ja) * | 1982-06-14 | 1983-12-21 | Ricoh Co Ltd | 再送要求機能付データ通信方式 |
US4562426A (en) * | 1982-11-08 | 1985-12-31 | Codex Corporation | Symbol coding apparatus |
JPS59165540A (ja) * | 1983-03-09 | 1984-09-18 | Ricoh Co Ltd | デ−タ伝送制御方式 |
DE3311030A1 (de) * | 1983-03-25 | 1984-09-27 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und schaltungsanordnung zum uebertragen von datensignalen zwischen teilnehmerstellen eines datennetzes |
DE3320397A1 (de) * | 1983-06-06 | 1984-12-06 | Siemens AG, 1000 Berlin und 8000 München | Anordnung zur vermittelbaren uebertragung von tonsignalen |
US4524244A (en) * | 1983-08-05 | 1985-06-18 | Cygnet Technologies, Inc. | Digital and voice telecommunication apparatus |
JPH0722324B2 (ja) * | 1983-08-30 | 1995-03-08 | 富士通株式会社 | データ伝送方式 |
US4756007A (en) * | 1984-03-08 | 1988-07-05 | Codex Corporation | Adaptive communication rate modem |
JPS60232744A (ja) * | 1984-05-02 | 1985-11-19 | Ricoh Co Ltd | 通信方式 |
SU1223381A1 (ru) * | 1984-06-15 | 1986-04-07 | Всесоюзный научно-исследовательский институт электрификации сельского хозяйства | Устройство передачи сигналов по проводам трехфазной линии электропередачи |
JPS6125265A (ja) * | 1984-07-14 | 1986-02-04 | Nec Corp | デ−タ処理装置 |
SU1309321A1 (ru) * | 1985-04-29 | 1987-05-07 | Всесоюзный научно-исследовательский институт электрификации сельского хозяйства | Устройство дл передачи сигналов по проводам линии электропередачи |
GB2188518B (en) * | 1986-03-24 | 1990-01-04 | Gen Electric Plc | Data transmission systems |
JPH06103876B2 (ja) * | 1986-06-23 | 1994-12-14 | 日本電気株式会社 | オ−トマテイツク・フオ−ルバツクおよびリストア方式 |
-
1988
- 1988-12-02 US US07/279,370 patent/US5007047A/en not_active Expired - Lifetime
-
1989
- 1989-12-04 EP EP90900624A patent/EP0446276B1/de not_active Expired - Lifetime
- 1989-12-04 JP JP90500895A patent/JPH05506336A/ja active Pending
- 1989-12-04 AU AU47494/90A patent/AU630908B2/en not_active Ceased
- 1989-12-04 DE DE68927010T patent/DE68927010T2/de not_active Expired - Lifetime
- 1989-12-04 CA CA002004476A patent/CA2004476A1/en not_active Abandoned
- 1989-12-04 WO PCT/US1989/005450 patent/WO1990006637A1/en active IP Right Grant
-
1998
- 1998-06-26 HK HK98106863A patent/HK1008409A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO1990006637A1 (en) | 1990-06-14 |
JPH05506336A (ja) | 1993-09-16 |
HK1008409A1 (en) | 1999-05-07 |
DE68927010D1 (de) | 1996-09-26 |
EP0446276B1 (de) | 1996-08-21 |
EP0446276A1 (de) | 1991-09-18 |
CA2004476A1 (en) | 1990-06-02 |
EP0446276A4 (en) | 1992-06-03 |
US5007047A (en) | 1991-04-09 |
AU4749490A (en) | 1990-06-26 |
AU630908B2 (en) | 1992-11-12 |
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