DE3889990T2 - Digitaler automatischer Leitungsentzerrer mit Mitteln zur Regelung der Anzapfungsverstärkung in Abhängigkeit der mittleren Filterausgangsleistung. - Google Patents

Digitaler automatischer Leitungsentzerrer mit Mitteln zur Regelung der Anzapfungsverstärkung in Abhängigkeit der mittleren Filterausgangsleistung.

Info

Publication number
DE3889990T2
DE3889990T2 DE3889990T DE3889990T DE3889990T2 DE 3889990 T2 DE3889990 T2 DE 3889990T2 DE 3889990 T DE3889990 T DE 3889990T DE 3889990 T DE3889990 T DE 3889990T DE 3889990 T2 DE3889990 T2 DE 3889990T2
Authority
DE
Germany
Prior art keywords
regulating
output power
filter output
average filter
automatic line
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
Application number
DE3889990T
Other languages
English (en)
Other versions
DE3889990D1 (de
Inventor
Masaru C O Nec Corpo Yamaguchi
Takenori C O Nec Miyagi Ogata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP18010587A external-priority patent/JPS6424637A/ja
Priority claimed from JP18010687A external-priority patent/JPS6424638A/ja
Priority claimed from JP63046106A external-priority patent/JPH0758878B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3889990D1 publication Critical patent/DE3889990D1/de
Publication of DE3889990T2 publication Critical patent/DE3889990T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE3889990T 1987-07-21 1988-07-20 Digitaler automatischer Leitungsentzerrer mit Mitteln zur Regelung der Anzapfungsverstärkung in Abhängigkeit der mittleren Filterausgangsleistung. Expired - Fee Related DE3889990T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP18010587A JPS6424637A (en) 1987-07-21 1987-07-21 Automatic equalizing circuit
JP18010687A JPS6424638A (en) 1987-07-21 1987-07-21 Automatic equalizing circuit
JP63046106A JPH0758878B2 (ja) 1988-02-29 1988-02-29 自動利得制御回路

Publications (2)

Publication Number Publication Date
DE3889990D1 DE3889990D1 (de) 1994-07-14
DE3889990T2 true DE3889990T2 (de) 1994-09-22

Family

ID=27292514

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3889990T Expired - Fee Related DE3889990T2 (de) 1987-07-21 1988-07-20 Digitaler automatischer Leitungsentzerrer mit Mitteln zur Regelung der Anzapfungsverstärkung in Abhängigkeit der mittleren Filterausgangsleistung.

Country Status (5)

Country Link
US (1) US4872184A (de)
EP (1) EP0300449B1 (de)
AU (1) AU608190B2 (de)
CA (1) CA1276246C (de)
DE (1) DE3889990T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758878B2 (ja) 1988-02-29 1995-06-21 日本電気株式会社 自動利得制御回路
JPH0750863B2 (ja) * 1987-09-25 1995-05-31 日本電気株式会社 受信器
GB2214386A (en) * 1988-01-08 1989-08-31 Philips Electronic Associated Signal equaliser
FR2650137B1 (de) * 1989-07-18 1994-10-28 France Etat
SE464787B (sv) * 1989-10-04 1991-06-10 Ericsson Telefon Ab L M Foerfarande och anordning foer att utfoera en approximativ division
FR2666947A1 (fr) * 1990-09-18 1992-03-20 Trt Telecom Radio Electr Dispositif d'egalisation de spectre.
WO1992005501A1 (en) * 1990-09-21 1992-04-02 Cambridge Signal Technologies, Inc. System and method of producing adaptive fir digital filter with non-linear frequency resolution
US5272656A (en) * 1990-09-21 1993-12-21 Cambridge Signal Technologies, Inc. System and method of producing adaptive FIR digital filter with non-linear frequency resolution
US5243624A (en) * 1991-07-26 1993-09-07 General Instrument Corporation Method and apparatus for updating coefficients in a complex adaptive equalizer
DE59202546D1 (de) * 1992-02-07 1995-07-20 Siemens Ag Adaptives nichtrekursives Digitalfilter.
JP2840155B2 (ja) * 1992-03-19 1998-12-24 富士通株式会社 等化方法
JPH05274614A (ja) * 1992-03-24 1993-10-22 Hitachi Ltd 磁気記録再生方法およびその装置
JPH05299976A (ja) * 1992-04-23 1993-11-12 Fujitsu Ltd 自動等化器
US5367409A (en) * 1993-04-29 1994-11-22 International Business Machines Corporation Even harmonic distortion compensation for digital data detection
US5590154A (en) * 1995-06-26 1996-12-31 Motorola, Inc. Equalizer circuit and a method for equalizing a continuous signal
US6480534B1 (en) * 1997-10-08 2002-11-12 Texas Instruments Incorporated Apparatus and method for a reduced component equalizer circuit
US6466626B1 (en) 1999-02-23 2002-10-15 International Business Machines Corporation Driver with in-situ variable compensation for cable attenuation
JP3414336B2 (ja) * 1999-11-04 2003-06-09 日本電気株式会社 Ｆｉｒフィルタ、ランプアップ・ランプダウン回路
US20030103578A1 (en) * 2001-12-04 2003-06-05 Yeh Alex C. Method and system for determining tap gain values for a transmit frequency domain equalizer to achieve unity power gain
US20030223504A1 (en) * 2002-06-04 2003-12-04 Huimin Chen Memory-based digital adaptive filter
US7599431B1 (en) * 2004-11-24 2009-10-06 Xilinx, Inc. Combined decision feedback equalization and linear equalization
JP5077241B2 (ja) * 2006-12-19 2012-11-21 日本電気株式会社 等化フィルタおよび歪み補償方法
US11757420B2 (en) 2021-05-19 2023-09-12 Elite Semiconductor Microelectronics Technology Inc. Method for dynamically adjusting adjustable gain value to equalize input signal to generate equalizer output signal and associated leveling equalizer
TWI778724B (zh) * 2021-07-26 2022-09-21 晶豪科技股份有限公司 等化第一輸入訊號以產生等化器輸出訊號的方法以及調平等化器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537038A (en) * 1968-06-28 1970-10-27 Bell Telephone Labor Inc Transversal-filter equalization circuits
JPS4935862B1 (de) * 1969-03-26 1974-09-26
US3736414A (en) * 1971-06-30 1973-05-29 Ibm Transversal filter equalizer for partial response channels
JPS5270707A (en) * 1975-12-09 1977-06-13 Nec Corp Automatic phase control system
US4141072A (en) * 1976-12-28 1979-02-20 Xerox Corporation Frequency domain automatic equalizer using minimum mean square error correction criteria
DE2724561C2 (de) * 1977-05-31 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Adaptiver Entzerrer für breitbandige Signale
DE3414129A1 (de) * 1984-04-14 1985-10-24 Standard Elektrik Lorenz Ag, 7000 Stuttgart Adaptiver entzerrer fuer digitale nachrichtenuebertragungssysteme mit einer uebertragungsgeschwindigkeit oberhalb der nyquistfrequenz
US4606043A (en) * 1984-10-09 1986-08-12 At&T Bell Laboratories Programmable automatic cable equalizer

Also Published As

Publication number Publication date
CA1276246C (en) 1990-11-13
AU1926788A (en) 1989-01-27
EP0300449A2 (de) 1989-01-25
EP0300449A3 (en) 1990-07-11
AU608190B2 (en) 1991-03-21
US4872184A (en) 1989-10-03
EP0300449B1 (de) 1994-06-08
DE3889990D1 (de) 1994-07-14

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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