JPS5525217A - Automatic equalizing system - Google Patents

Automatic equalizing system

Info

Publication number
JPS5525217A
JPS5525217A JP9727878A JP9727878A JPS5525217A JP S5525217 A JPS5525217 A JP S5525217A JP 9727878 A JP9727878 A JP 9727878A JP 9727878 A JP9727878 A JP 9727878A JP S5525217 A JPS5525217 A JP S5525217A
Authority
JP
Japan
Prior art keywords
phase
signal
circuit
supplied
correction
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
JP9727878A
Other languages
Japanese (ja)
Other versions
JPS6348209B2 (en
Inventor
Hideo Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9727878A priority Critical patent/JPS5525217A/en
Publication of JPS5525217A publication Critical patent/JPS5525217A/en
Publication of JPS6348209B2 publication Critical patent/JPS6348209B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To realize an automatic equalizing system which can decide equalization phase correction signals in a simple and high-accuracy way. CONSTITUTION:The phase-modulated complex signal supplied through input terminal 100 receives the convolutional addition with the complex tap coefficient of the automatic equalizer via convolutional adder circuit 101, and this output yn receives the phase turn toward the 1st direction through phase correction circuit 102 for the phase correction based on the compound phase signal obtained through compounding circuit 400 the follow-up phase supplied through terminal 106 and the bias phase supplied through terminal 401. Phase-corrected signal Zn is supplied to decision circuit 103 to receive decision for the transmission code. At the same time, signal Zn is supplied to subtractor circuit 104 along with output complex signal an of circuit 103 to grow equalization residual signal epsilonn. This signal epsilonn receives the reverse phase turn toward the 1st direction for the phase reverse correction through phase reverse correction circuit 105 and based on the compound phase signal, thus forming the control signal to correct the tap coefficient of circuit 101.
JP9727878A 1978-08-11 1978-08-11 Automatic equalizing system Granted JPS5525217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9727878A JPS5525217A (en) 1978-08-11 1978-08-11 Automatic equalizing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9727878A JPS5525217A (en) 1978-08-11 1978-08-11 Automatic equalizing system

Publications (2)

Publication Number Publication Date
JPS5525217A true JPS5525217A (en) 1980-02-22
JPS6348209B2 JPS6348209B2 (en) 1988-09-28

Family

ID=14188044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9727878A Granted JPS5525217A (en) 1978-08-11 1978-08-11 Automatic equalizing system

Country Status (1)

Country Link
JP (1) JPS5525217A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581718A (en) * 1981-06-25 1983-01-07 Toho Rayon Co Ltd Noisture-and heat-resistant epoxy resin composition
EP0217657A2 (en) * 1985-09-27 1987-04-08 Sumitomo Chemical Company, Limited Low-viscosity epoxy resin, resin composition containing it, and fibre-reinforced composite material containing cured product of the composition
JPS62141039A (en) * 1985-12-16 1987-06-24 Toray Ind Inc Resin composition for fiber reinforced prepreg
JPS62200922A (en) * 1986-02-28 1987-09-04 Nec Corp Subscriber line transmission system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581718A (en) * 1981-06-25 1983-01-07 Toho Rayon Co Ltd Noisture-and heat-resistant epoxy resin composition
JPS6140244B2 (en) * 1981-06-25 1986-09-08 Toho Rayon Kk
EP0217657A2 (en) * 1985-09-27 1987-04-08 Sumitomo Chemical Company, Limited Low-viscosity epoxy resin, resin composition containing it, and fibre-reinforced composite material containing cured product of the composition
JPS62141039A (en) * 1985-12-16 1987-06-24 Toray Ind Inc Resin composition for fiber reinforced prepreg
JPS62200922A (en) * 1986-02-28 1987-09-04 Nec Corp Subscriber line transmission system

Also Published As

Publication number Publication date
JPS6348209B2 (en) 1988-09-28

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