DE3461977D1 - Circuit for joint adaptive equalisation and demodulation - Google Patents

Circuit for joint adaptive equalisation and demodulation

Info

Publication number
DE3461977D1
DE3461977D1 DE8484200647T DE3461977T DE3461977D1 DE 3461977 D1 DE3461977 D1 DE 3461977D1 DE 8484200647 T DE8484200647 T DE 8484200647T DE 3461977 T DE3461977 T DE 3461977T DE 3461977 D1 DE3461977 D1 DE 3461977D1
Authority
DE
Germany
Prior art keywords
demodulation
circuit
joint adaptive
adaptive equalisation
equalisation
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
DE8484200647T
Other languages
English (en)
Inventor
Lydie Societe Civile Desperben
Hikmet Societe Civile S P Sari
Said Societe Civile S P Moridi
Georges Societe Civil Bonnerot
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.)
Electronique & Physique
Laboratoires dElectronique Philips SAS
Koninklijke Philips NV
Original Assignee
Electronique & Physique
Laboratoires dElectronique et de Physique Appliquee
Philips Gloeilampenfabrieken NV
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 Electronique & Physique, Laboratoires dElectronique et de Physique Appliquee, Philips Gloeilampenfabrieken NV filed Critical Electronique & Physique
Application granted granted Critical
Publication of DE3461977D1 publication Critical patent/DE3461977D1/de
Expired 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
DE8484200647T 1983-05-11 1984-05-08 Circuit for joint adaptive equalisation and demodulation Expired DE3461977D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8307910A FR2546008B1 (fr) 1983-05-11 1983-05-11 Circuit d'egalisation adaptative et de demodulation conjointes

Publications (1)

Publication Number Publication Date
DE3461977D1 true DE3461977D1 (en) 1987-02-12

Family

ID=9288812

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484200647T Expired DE3461977D1 (en) 1983-05-11 1984-05-08 Circuit for joint adaptive equalisation and demodulation

Country Status (9)

Country Link
US (1) US4594725A (de)
EP (1) EP0125722B1 (de)
JP (1) JPS59211337A (de)
AU (1) AU563907B2 (de)
CA (1) CA1211515A (de)
DE (1) DE3461977D1 (de)
FI (1) FI76655C (de)
FR (1) FR2546008B1 (de)
NO (1) NO163929C (de)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8406846D0 (en) * 1984-03-16 1984-04-18 British Telecomm Digital filters
GB2181008B (en) * 1985-09-25 1989-09-20 Sony Corp Infinite impulse response filters
US4716577A (en) * 1986-07-07 1987-12-29 Rockwell International Corporation Autoequalizer
FR2627032A1 (fr) * 1988-02-09 1989-08-11 Alcatel Thomson Faisceaux Filtre transverse
US4989170A (en) * 1988-06-09 1991-01-29 National Semiconductor Corporation Hybrid stochastic gradient for convergence of adaptive filter
JPH065822B2 (ja) * 1989-01-19 1994-01-19 日本電気株式会社 並列処理形トランスバーサル等化器
SE462943B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer frekvensstyrning av en koherent radiomottagare
SE462942B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer snabb frekvensstyrning av en koherent radiomottagare
FR2644638B1 (de) * 1989-03-14 1991-05-31 Labo Electronique Physique
US4947408A (en) * 1989-05-12 1990-08-07 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Digital carrier demodulator employing components working beyond normal limits
US5067140A (en) * 1989-08-16 1991-11-19 Titan Linkabit Corporation Conversion of analog signal into i and q digital signals with enhanced image rejection
GB2282030B (en) * 1993-09-14 1997-09-24 Plessey Semiconductors Ltd Direct conversion receiver
CN1082301C (zh) * 1994-09-10 2002-04-03 三星电子株式会社 数字无线电收发机
ES2101639B1 (es) * 1994-10-21 1998-03-01 Alcatel Standard Electrica Ecualizador adaptativo.
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7184489B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7502430B2 (en) * 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US7173981B1 (en) * 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7483505B2 (en) * 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7822154B2 (en) * 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7245671B1 (en) * 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7639759B2 (en) * 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7184473B2 (en) * 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
WO2004004193A2 (en) 2002-07-01 2004-01-08 The Directv Group, Inc. Improving hierarchical 8psk performance
TWI279113B (en) * 2002-07-03 2007-04-11 Hughes Electronics Corp Method and apparatus for layered modulation
US7463676B2 (en) * 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
US7230480B2 (en) * 2002-10-25 2007-06-12 The Directv Group, Inc. Estimating the operating point on a non-linear traveling wave tube amplifier
ATE491296T1 (de) * 2002-10-25 2010-12-15 Directv Group Inc Verfahren und vorrichtung zum anpassen von trägerleistungsanforderungen gemäss verfügbarkeit in geschichteten modulationssystemen
US7529312B2 (en) * 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
EP1563620B1 (de) 2002-10-25 2012-12-05 The Directv Group, Inc. Signalprozessor für geschichtete Modulation mit niedrigerer Komplexität
US7474710B2 (en) * 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
US7502429B2 (en) * 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
US9148162B2 (en) * 2014-01-15 2015-09-29 Guzik Technical Enterprises Digital down converter with equalization

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167441B1 (de) * 1972-01-10 1977-07-15 Ibm France
FR2216715B1 (de) * 1973-01-31 1976-06-11 Ibm France
US4475211A (en) * 1982-09-13 1984-10-02 Communications Satellite Corporation Digitally controlled transversal equalizer

Also Published As

Publication number Publication date
FI841834A0 (fi) 1984-05-08
FR2546008A1 (fr) 1984-11-16
FI76655C (fi) 1988-11-10
FI841834A (fi) 1984-11-12
JPS59211337A (ja) 1984-11-30
AU563907B2 (en) 1987-07-23
EP0125722B1 (de) 1987-01-07
FI76655B (fi) 1988-07-29
CA1211515A (en) 1986-09-16
AU2787884A (en) 1984-11-15
NO841836L (no) 1984-11-12
JPH0342735B2 (de) 1991-06-28
FR2546008B1 (fr) 1985-07-12
EP0125722A1 (de) 1984-11-21
NO163929B (no) 1990-04-30
NO163929C (no) 1990-08-08
US4594725A (en) 1986-06-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee