GB1340599A - Apparatus for providing equalized signals - Google Patents

Apparatus for providing equalized signals

Info

Publication number
GB1340599A
GB1340599A GB1362171*[A GB1362171A GB1340599A GB 1340599 A GB1340599 A GB 1340599A GB 1362171 A GB1362171 A GB 1362171A GB 1340599 A GB1340599 A GB 1340599A
Authority
GB
United Kingdom
Prior art keywords
domain
signal
transformed
processed
data
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
GB1362171*[A
Other languages
English (en)
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 Business Machines Corp
Original Assignee
International Business Machines 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 Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1340599A publication Critical patent/GB1340599A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0211—Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
    • H03H17/0213—Frequency domain filters using Fourier transforms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB1362171*[A 1970-06-11 1971-05-07 Apparatus for providing equalized signals Expired GB1340599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4552070A 1970-06-11 1970-06-11

Publications (1)

Publication Number Publication Date
GB1340599A true GB1340599A (en) 1973-12-12

Family

ID=21938369

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1362171*[A Expired GB1340599A (en) 1970-06-11 1971-05-07 Apparatus for providing equalized signals

Country Status (6)

Country Link
US (1) US3679882A (enExample)
JP (1) JPS5320817B1 (enExample)
CA (1) CA950975A (enExample)
DE (1) DE2125230C3 (enExample)
FR (1) FR2095512A5 (enExample)
GB (1) GB1340599A (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987285A (en) * 1973-05-04 1976-10-19 Rca Corporation Digital matched filtering using a step transform process
US3864632A (en) * 1973-10-01 1975-02-04 Rockwell International Corp Fast Equalization System
JPS5731716B2 (enExample) * 1974-12-23 1982-07-06
FR2308143A1 (fr) * 1975-04-16 1976-11-12 Ibm France Dispositif generateur de fonction de convolution discrete et filtre numerique incorporant ledit dispositif
US4020333A (en) * 1975-05-06 1977-04-26 International Business Machines Corporation Digital filter for filtering complex signals
US3980873A (en) * 1975-06-27 1976-09-14 Aeronutronic Ford Corporation Digital convolutional filter
FR2342592A1 (fr) * 1976-02-26 1977-09-23 Ibm France Dispositif de filtrage numerique
FR2352345A1 (fr) * 1976-05-21 1977-12-16 Ibm France Generateur de transformees discretes rapides, et filtre numerique utilisant ledit generateur
EP0194826B1 (en) * 1985-03-15 1990-06-20 THORN EMI Patents Limited Spread-spectrum signal generator
FR2712447B1 (fr) * 1993-11-08 1996-01-05 Sat Procédé de transmission de signaux numériques et récepteur pour la mise en Óoeuvre du procédé.
US6704317B1 (en) 1998-05-27 2004-03-09 3Com Corporation Multi-carrier LAN modem server
US6891887B1 (en) 1998-05-27 2005-05-10 3Com Corporation Multi-carrier LAN adapter device using interpolative equalizer
US6507585B1 (en) 1998-05-27 2003-01-14 3Com Corporation Multi-carrier LAN adapter device using frequency domain equalizer
US6377683B1 (en) 1998-05-29 2002-04-23 3Com Corporation Low complexity frequency domain echo canceller for DMT transceivers
US6603811B1 (en) 1998-05-29 2003-08-05 3Com Corporation Low complexity frequency domain equalizer having fast re-lock
US6973135B1 (en) 1999-07-09 2005-12-06 Telefonaktiebolaget Lm Ericsson (Publ) Reduced delay implementation of fourier transform based channelizers and de-channelizers
US7502816B2 (en) * 2003-07-31 2009-03-10 Panasonic Corporation Signal-processing apparatus and method
US8200729B2 (en) * 2006-10-25 2012-06-12 Agilent Technologies, Inc. Efficient implementation of filters for MIMO fading
WO2013094308A1 (ja) * 2011-12-20 2013-06-27 日本電気株式会社 ディジタルフィルタ回路およびディジタルフィルタ処理方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403227A (en) * 1965-10-22 1968-09-24 Page Comm Engineers Inc Adaptive digital vocoder
US3544775A (en) * 1966-12-29 1970-12-01 Bell Telephone Labor Inc Digital processor for calculating fourier coefficients
US3517173A (en) * 1966-12-29 1970-06-23 Bell Telephone Labor Inc Digital processor for performing fast fourier transforms

Also Published As

Publication number Publication date
JPS5320817B1 (enExample) 1978-06-29
DE2125230A1 (de) 1971-12-16
CA950975A (en) 1974-07-09
US3679882A (en) 1972-07-25
FR2095512A5 (enExample) 1972-02-11
DE2125230C3 (de) 1979-05-31
DE2125230B2 (de) 1978-09-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee