SE9000854D0 - PROCEDURE FOR DETERMINING COEFFICIENTS IN A TRANSVERSAL EQUALIZER - Google Patents

PROCEDURE FOR DETERMINING COEFFICIENTS IN A TRANSVERSAL EQUALIZER

Info

Publication number
SE9000854D0
SE9000854D0 SE9000854A SE9000854A SE9000854D0 SE 9000854 D0 SE9000854 D0 SE 9000854D0 SE 9000854 A SE9000854 A SE 9000854A SE 9000854 A SE9000854 A SE 9000854A SE 9000854 D0 SE9000854 D0 SE 9000854D0
Authority
SE
Sweden
Prior art keywords
discrete fourier
fourier transformation
procedure
transversal equalizer
determining coefficients
Prior art date
Application number
SE9000854A
Other languages
Swedish (sv)
Other versions
SE9000854L (en
SE510915C2 (en
Inventor
R Kari
Original Assignee
Nokia Data Systems
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 Nokia Data Systems filed Critical Nokia Data Systems
Publication of SE9000854D0 publication Critical patent/SE9000854D0/en
Publication of SE9000854L publication Critical patent/SE9000854L/en
Publication of SE510915C2 publication Critical patent/SE510915C2/en

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
    • H04L25/03044—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using fractionally spaced delay lines or combinations of fractionally integrally spaced taps

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)
  • Complex Calculations (AREA)

Abstract

The coefficient selection system uses a defined periodic data sequence with a discrete Fourier transformation transmitted along the transmission channel. The discrete Fourier transformation of the periodic sequence obtained from the transmission channel is calculated. The initial discrete Fourier transformation is combined with a reference spectrum and divided by the calculated discrete Fourier transformation to obtain a ratio which is subjected to an inverse discrete Fourier transformation to calculate the equaliser coefficients. The reference spectrum is selected to obtain a pulse characteristic which decreases rapidly.
SE9000854A 1989-03-13 1990-03-09 Method for determining the coefficients in a transverse equalizer SE510915C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI891186A FI82336C (en) 1989-03-13 1989-03-13 Method for determining coefficients in a transverse equator

Publications (3)

Publication Number Publication Date
SE9000854D0 true SE9000854D0 (en) 1990-03-09
SE9000854L SE9000854L (en) 1990-09-14
SE510915C2 SE510915C2 (en) 1999-07-05

Family

ID=8528040

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000854A SE510915C2 (en) 1989-03-13 1990-03-09 Method for determining the coefficients in a transverse equalizer

Country Status (5)

Country Link
DE (1) DE4007989B4 (en)
FI (1) FI82336C (en)
FR (1) FR2644654B1 (en)
GB (1) GB2229898B (en)
SE (1) SE510915C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI83010C (en) * 1989-08-24 1991-05-10 Nokia Data Systems Method for fine tuning an equalizer for use in a data transmission system receiver
DE19523327C2 (en) * 1995-06-27 2000-08-24 Siemens Ag Method for improved estimation of the impulse response of a transmission channel
AU9337198A (en) * 1997-08-12 1999-03-01 Siemens Aktiengesellschaft Channel estimation method and device
WO2021033248A1 (en) * 2019-08-19 2021-02-25 日本電信電話株式会社 Optical communication system and optical communication method
CN115051939B (en) * 2022-08-15 2022-10-28 为准（北京）电子科技有限公司 Group delay estimation method and device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358061A1 (en) * 1976-07-08 1978-02-03 Ibm France EQUALIZATION METHOD AND DEVICE USING THE FOURIER TRANSFORM

Also Published As

Publication number Publication date
GB9005510D0 (en) 1990-05-09
FR2644654A1 (en) 1990-09-21
FI891186A (en) 1990-09-14
FR2644654B1 (en) 1994-09-30
GB2229898A (en) 1990-10-03
FI82336C (en) 1991-02-11
SE9000854L (en) 1990-09-14
DE4007989B4 (en) 2006-01-26
FI82336B (en) 1990-10-31
SE510915C2 (en) 1999-07-05
DE4007989A1 (en) 1990-09-20
FI891186A0 (en) 1989-03-13
GB2229898B (en) 1993-09-15

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Legal Events

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