JPS5741022A - Automatic equalizer - Google Patents

Automatic equalizer

Info

Publication number
JPS5741022A
JPS5741022A JP11738280A JP11738280A JPS5741022A JP S5741022 A JPS5741022 A JP S5741022A JP 11738280 A JP11738280 A JP 11738280A JP 11738280 A JP11738280 A JP 11738280A JP S5741022 A JPS5741022 A JP S5741022A
Authority
JP
Japan
Prior art keywords
adder
discriminator
error
selecting circuit
output
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.)
Granted
Application number
JP11738280A
Other languages
Japanese (ja)
Other versions
JPH0226406B2 (en
Inventor
Mikiro Eguchi
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
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11738280A priority Critical patent/JPS5741022A/en
Publication of JPS5741022A publication Critical patent/JPS5741022A/en
Publication of JPH0226406B2 publication Critical patent/JPH0226406B2/ja
Granted 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)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To prevent an overcorrection of an automatic equalizer or a divergence of a system, by providing a selecting circuit which opens a feedback loop when a temporary disturbance has occurred in the transmission line. CONSTITUTION:A receiving data RD which is inputted to a shift register 1 is operated with the extent of correction stored in a shift register 2, at every element by a multiplier 3, is added by an adder 4, and is outputted. This output signal is compared with an ideal value by a discriminator 5, its error is given to each element of an adder 6 from a selecting circuit 10, and it is controlled for feedback so that an output error of the discriminator 5 becomes minimum. In case when a disturbance has occurred in the transmission line and the receiving data RD has been varied suddenly, an error between the output signal of the adder 4 and the ideal value increase, a deciding circuit 11 drives the selecting circuit 10 and sends out the amount of errors of a constant value to the adder 6 instead of the output of the discriminator 5.
JP11738280A 1980-08-26 1980-08-26 Automatic equalizer Granted JPS5741022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11738280A JPS5741022A (en) 1980-08-26 1980-08-26 Automatic equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11738280A JPS5741022A (en) 1980-08-26 1980-08-26 Automatic equalizer

Publications (2)

Publication Number Publication Date
JPS5741022A true JPS5741022A (en) 1982-03-06
JPH0226406B2 JPH0226406B2 (en) 1990-06-11

Family

ID=14710259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11738280A Granted JPS5741022A (en) 1980-08-26 1980-08-26 Automatic equalizer

Country Status (1)

Country Link
JP (1) JPS5741022A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61206321U (en) * 1985-06-12 1986-12-26
EP0461931A2 (en) * 1990-06-15 1991-12-18 Nec Corporation Adaptive equalizer capable of effectively removing a remaining fading in an equalized signal
EP0532353A2 (en) * 1991-09-12 1993-03-17 Nec Corporation High-speed DFE with low residual fading

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130515A (en) * 1976-04-27 1977-11-01 Toshiba Corp Control system for automatic equalizer
JPS54133866A (en) * 1978-04-10 1979-10-17 Nec Corp Automatic equalizer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130515A (en) * 1976-04-27 1977-11-01 Toshiba Corp Control system for automatic equalizer
JPS54133866A (en) * 1978-04-10 1979-10-17 Nec Corp Automatic equalizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61206321U (en) * 1985-06-12 1986-12-26
EP0461931A2 (en) * 1990-06-15 1991-12-18 Nec Corporation Adaptive equalizer capable of effectively removing a remaining fading in an equalized signal
EP0532353A2 (en) * 1991-09-12 1993-03-17 Nec Corporation High-speed DFE with low residual fading

Also Published As

Publication number Publication date
JPH0226406B2 (en) 1990-06-11

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