CA1165823A - Automatic equalizer for synthesizing recursive filters - Google Patents

Automatic equalizer for synthesizing recursive filters

Info

Publication number
CA1165823A
CA1165823A CA000388084A CA388084A CA1165823A CA 1165823 A CA1165823 A CA 1165823A CA 000388084 A CA000388084 A CA 000388084A CA 388084 A CA388084 A CA 388084A CA 1165823 A CA1165823 A CA 1165823A
Authority
CA
Canada
Prior art keywords
recursive
digital
filter coefficients
memory
equalizer
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
Application number
CA000388084A
Other languages
English (en)
French (fr)
Inventor
Robert Treiber
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of CA1165823A publication Critical patent/CA1165823A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Interface Circuits In Exchanges (AREA)
CA000388084A 1980-10-23 1981-10-16 Automatic equalizer for synthesizing recursive filters Expired CA1165823A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/199,906 US4386430A (en) 1980-10-23 1980-10-23 Automatic equalizer for synthesizing recursive filters
US199,906 1988-05-28

Publications (1)

Publication Number Publication Date
CA1165823A true CA1165823A (en) 1984-04-17

Family

ID=22739506

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000388084A Expired CA1165823A (en) 1980-10-23 1981-10-16 Automatic equalizer for synthesizing recursive filters

Country Status (28)

Country Link
US (1) US4386430A (enExample)
JP (1) JPS5799829A (enExample)
KR (1) KR830008571A (enExample)
AU (1) AU547293B2 (enExample)
BR (1) BR8106756A (enExample)
CA (1) CA1165823A (enExample)
CH (1) CH656267A5 (enExample)
DE (1) DE3141500A1 (enExample)
DK (1) DK466081A (enExample)
ES (1) ES506468A0 (enExample)
FI (1) FI813328A7 (enExample)
FR (1) FR2493082A1 (enExample)
GB (1) GB2086198B (enExample)
HK (1) HK58885A (enExample)
IL (1) IL63994A (enExample)
IN (1) IN155109B (enExample)
IT (1) IT1195222B (enExample)
MX (1) MX151067A (enExample)
NL (1) NL8104731A (enExample)
NO (1) NO157036C (enExample)
NZ (1) NZ198653A (enExample)
PH (1) PH17555A (enExample)
PL (1) PL134851B1 (enExample)
PT (1) PT73849B (enExample)
RO (1) RO84864A (enExample)
SE (1) SE8106158L (enExample)
YU (1) YU253581A (enExample)
ZA (1) ZA816775B (enExample)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5305378A (en) * 1980-01-07 1994-04-19 Telefonaktiebolaget Lm Ericsson Arrangement for adjusting an adaptive digital filter included in a subscriber unit
JPS5780573A (en) * 1980-11-07 1982-05-20 Mitsubishi Electric Corp Tester for relay
DE3116266A1 (de) * 1981-04-24 1982-11-11 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren zum entzerren eines datensignales
DE3231047A1 (de) * 1982-08-20 1984-02-23 Siemens AG, 1000 Berlin und 8000 München Verfahren zur einstellung der koeffizienten eines adaptiven transversalfilters
ATE41840T1 (de) * 1983-10-06 1989-04-15 Studer Willi Ag Verfahren und vorrichtung zur umsetzung einer eingangsabtastfolge in eine ausgangsabtastfolge.
DE3342353A1 (de) * 1983-11-23 1985-05-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zum betrieb eines computertomographen
US4692909A (en) * 1984-06-29 1987-09-08 Amoco Corporation Adaptive seismic signal processor
EP0167677B1 (en) * 1984-07-13 1989-03-08 BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap Signal processing arrangement
FR2569322B1 (fr) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr Annuleur d'echo utilisant la modulation delta
GB2214762B (en) * 1985-08-20 1990-02-21 Mitsubishi Electric Corp Signal transmission means
AU583222B2 (en) * 1985-08-20 1989-04-20 Mitsubishi Denki Kabushiki Kaisha Equalizer and equalizing circuit using the same
GB8721159D0 (en) * 1987-09-09 1987-10-14 Philips Nv Adjusting filter coefficients
US4896152A (en) * 1989-03-02 1990-01-23 General Electric Company Telemetry system with a sending station using recursive filter for bandwidth limiting
EP0413073A1 (en) * 1989-08-16 1991-02-20 International Business Machines Corporation Adaptive loop gain phase filter
US5475628A (en) * 1992-09-30 1995-12-12 Analog Devices, Inc. Asynchronous digital sample rate converter
US5638010A (en) * 1995-06-07 1997-06-10 Analog Devices, Inc. Digitally controlled oscillator for a phase-locked loop providing a residue signal for use in continuously variable interpolation and decimation filters
EP1107464A1 (en) * 1999-12-06 2001-06-13 Alcatel Method and device for echo cancelling
US6314132B1 (en) * 1999-12-13 2001-11-06 Sunplus Technology Co., Ltd. Microprocessor structure and method for implementing digital filter operations
DE19961121C2 (de) 1999-12-17 2002-02-07 Infineon Technologies Ag Schaltungsanordnung und Verfahren zur Offsetkompensation eines Signals
US7062037B2 (en) * 2002-04-30 2006-06-13 Texas Instruments Incorporated Generic line impedance matching circuit using decomposed configurable transfer functions
US7155469B2 (en) * 2002-12-31 2006-12-26 Intel Corporation Method of correcting physical impairments of a programmable filter
US7428262B2 (en) * 2003-08-13 2008-09-23 Motorola, Inc. Channel estimation in a rake receiver of a CDMA communication system
US9509530B2 (en) * 2009-07-28 2016-11-29 Panasonic Intellectual Property Management Co., Ltd. Communication system and communication terminal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997770A (en) * 1973-07-09 1976-12-14 U.S. Philips Corporation Recursive digital filter
US4021738A (en) * 1976-03-01 1977-05-03 Bell Telephone Laboratories, Incorporated Adaptive equalizer with fast convergence properties
US4038536A (en) * 1976-03-29 1977-07-26 Rockwell International Corporation Adaptive recursive least mean square error filter
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
US4125900A (en) * 1977-07-01 1978-11-14 Ncr Corporation Cascaded recursive digital filter
JPS54157407A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Level control unit for time-division exchange
US4228517A (en) * 1978-12-18 1980-10-14 James N. Constant Recursive filter

Also Published As

Publication number Publication date
MX151067A (es) 1984-09-20
IT8124625A0 (it) 1981-10-22
KR830008571A (ko) 1983-12-10
NO157036B (no) 1987-09-28
GB2086198B (en) 1984-12-05
CH656267A5 (de) 1986-06-13
PT73849A (en) 1981-11-01
IL63994A0 (en) 1982-01-31
IN155109B (enExample) 1985-01-05
NZ198653A (en) 1985-07-12
YU253581A (en) 1983-10-31
PH17555A (en) 1984-09-27
AU7652681A (en) 1982-04-29
FI813328L (fi) 1982-04-24
IT8124625A1 (it) 1983-04-22
ZA816775B (en) 1982-10-27
FR2493082B1 (enExample) 1985-02-22
IL63994A (en) 1984-10-31
FI813328A7 (fi) 1982-04-24
SE8106158L (sv) 1982-04-24
NO813440L (no) 1982-04-26
DK466081A (da) 1982-04-24
PL134851B1 (en) 1985-09-30
RO84864A (ro) 1984-08-17
HK58885A (en) 1985-08-16
IT1195222B (it) 1988-10-12
JPS5799829A (en) 1982-06-21
NO157036C (no) 1988-01-13
NL8104731A (nl) 1982-05-17
US4386430A (en) 1983-05-31
FR2493082A1 (fr) 1982-04-30
GB2086198A (en) 1982-05-06
AU547293B2 (en) 1985-10-17
ES8401293A1 (es) 1983-12-01
PT73849B (en) 1983-04-14
PL233558A1 (enExample) 1982-08-02
DE3141500A1 (de) 1982-07-01
BR8106756A (pt) 1982-07-06
ES506468A0 (es) 1983-12-01

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Legal Events

Date Code Title Description
MKEX Expiry