ES2584868T3 - Procedimiento para invertir temporalmente una onda - Google Patents

Procedimiento para invertir temporalmente una onda Download PDF

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Publication number
ES2584868T3
ES2584868T3 ES05753748.2T ES05753748T ES2584868T3 ES 2584868 T3 ES2584868 T3 ES 2584868T3 ES 05753748 T ES05753748 T ES 05753748T ES 2584868 T3 ES2584868 T3 ES 2584868T3
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Spain
Prior art keywords
signal
transformation
transformed
procedure
transformed signals
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Active
Application number
ES05753748.2T
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English (en)
Inventor
Mathias Fink
Geoffroy Lerosey
Arnaud Derode
Julien De Rosny
Arnaud Tourin
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Centre National de la Recherche Scientifique CNRS
Universite Paris Diderot Paris 7
Original Assignee
Centre National de la Recherche Scientifique CNRS
Universite Paris Diderot Paris 7
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Publication of ES2584868T3 publication Critical patent/ES2584868T3/es
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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Television Systems (AREA)
  • Image Processing (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transmitters (AREA)

Abstract

Procedimiento para invertir temporalmente una onda que corresponde a al menos una señal inicial s(t), en la que t es el tiempo, presentando esta señal inicial s(t) una cierta frecuencia central f0 y un ancho de banda Δf, procedimiento en el que se determina una señal de inversión temporal α.s(-t), donde α es un coeficiente multiplicativo y s(-t) es la inversión temporal de s(t), caracterizado por que consta al menos de las siguientes etapas: - se aplica a la señal inicial s(t) una primera trasformación (7) adaptada para reducir la frecuencia central de la señal y para sustancialmente no provocar ninguna pérdida de información con respecto a la señal inicial, produciendo dicha primera transformación un primer conjunto de señales trasformadas que comprende al menos una primera señal transformada Ki(t) con una frecuencia central más baja que la señal inicial, siendo dicho primer conjunto de señales transformadas Ki(t) representativo de dicha señal inicial s(t); - se aplica a cada primera señal transformada Ki(t), una segunda transformación (2) que produce una segunda señal transformada K'i(t) sustancialmente con la misma frecuencia central que la primera señal transformada, produciendo de este modo dicha segunda transformación un segundo conjunto de señales transformadas K'i(t) a partir del primer conjunto de señales transformadas Ki(t), seleccionándose dicha segunda transformación para que dicho segundo conjunto de señales transformadas sea representativo de la señal de inversión temporal s(-t); - se aplica al segundo conjunto de señales transformadas K'i(t) una tercera transformación (12) que genera la señal de inversión temporal α.s(-t), siendo la tercera transformación una transformación inversa de la primera transformación.

Description

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Claims (1)

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ES05753748.2T 2004-04-13 2005-04-11 Procedimiento para invertir temporalmente una onda Active ES2584868T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0403845A FR2868894B1 (fr) 2004-04-13 2004-04-13 Procede pour inverser temporellement une onde
FR0403845 2004-04-13
PCT/FR2005/000872 WO2005104473A1 (fr) 2004-04-13 2005-04-11 Procede pour inverser temporellement une onde.

Publications (1)

Publication Number Publication Date
ES2584868T3 true ES2584868T3 (es) 2016-09-29

Family

ID=34945099

Family Applications (1)

Application Number Title Priority Date Filing Date
ES05753748.2T Active ES2584868T3 (es) 2004-04-13 2005-04-11 Procedimiento para invertir temporalmente una onda

Country Status (8)

Country Link
US (1) US7653137B2 (es)
EP (1) EP1735978B1 (es)
JP (1) JP4703641B2 (es)
CN (1) CN100574290C (es)
CA (1) CA2562518C (es)
ES (1) ES2584868T3 (es)
FR (1) FR2868894B1 (es)
WO (1) WO2005104473A1 (es)

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FR2903827B1 (fr) * 2006-07-11 2009-01-23 Centre Nat Rech Scient Procede et dispositif de transmission d'ondes.
US7994947B1 (en) 2008-06-06 2011-08-09 Maxim Integrated Products, Inc. Method and apparatus for generating a target frequency having an over-sampled data rate using a system clock having a different frequency
WO2010042319A2 (en) * 2008-10-10 2010-04-15 Ziva Corporation Techniques and systems for wireless communications
FR2943793B1 (fr) * 2009-03-30 2011-04-22 Supelec Procede de controle de la directivite et la polarisation de distributions coherentes de champ dans un milieu reverberant.
WO2011029072A2 (en) 2009-09-03 2011-03-10 Ziva Corporation Techniques and systems for providing data over power in communications based on time reversal
US8639120B2 (en) * 2010-01-20 2014-01-28 Fujitsu Limited Method and system for electrical domain optical spectrum shaping
FR2958437B1 (fr) * 2010-04-01 2016-11-11 Inst Nat Sciences Appliquees Lyon Procede de communication sans fil entre plusieurs emetteurs et au moins un recepteur
EP2780744B1 (en) 2011-11-18 2015-11-04 Halliburton Energy Services, Inc. Methods and systems for analyzing formation properties when performing subterranean operations
WO2013126054A1 (en) 2012-02-22 2013-08-29 Halliburton Energy Services, Inc. Downhole telemetry systems and methods with time-reversal pre-equalization
US9461751B2 (en) 2012-12-18 2016-10-04 Ciena Corporation Frequency domain multiplex optical transmission
FR3008799A1 (fr) 2013-07-17 2015-01-23 Centre Nat Rech Scient Chambre electromagnetique a retournement temporel
FR3012904A1 (fr) 2013-11-05 2015-05-08 Sonorhc Dispositif et procede pour l'acquisition et le traitement de signaux acoustiques ou vibratoires
CN108347395A (zh) * 2018-03-22 2018-07-31 成都天成电科科技有限公司 一种聚焦信号生成方法、反演设备及电子设备

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US4058677A (en) * 1974-04-26 1977-11-15 Lear Siegler, Inc. Sound scrambling equipment
US4320531A (en) * 1979-04-02 1982-03-16 Dimon Donald F Time shared frequency conversion system
US4611231A (en) * 1983-05-31 1986-09-09 Matsushita Electric Industrial Co., Ltd. Signal processing apparatus for a video signal
US7072380B2 (en) * 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
DE19529477A1 (de) * 1995-08-10 1997-02-13 Paul Drude Inst Fuer Festkoerp Spread-Spektrum-Signalübertragungsverfahren und -system sowie Sender und Empfänger zur Verwendung bei dem Verfahren bzw. System
US5825887A (en) * 1995-12-28 1998-10-20 Trimble Navigation Limited Transmitting and receiving apparatus for full code correlation operation under encryption for satellite positioning system
FR2748137B1 (fr) 1996-04-24 1998-07-03 Lewiner Jacques Procede pour optimiser la communication radio entre une base fixe et un mobile
JPH09321721A (ja) * 1996-05-27 1997-12-12 Sony Corp 送信方法，送信装置，受信方法及び受信装置
US6404775B1 (en) * 1997-11-21 2002-06-11 Allen Telecom Inc. Band-changing repeater with protocol or format conversion
US6813485B2 (en) * 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
IT1320534B1 (it) * 2000-07-11 2003-12-10 Cselt Centro Studi Lab Telecom Procedimento di trasmissione per reti di comunicazione, relativosistema e terminale.
KR100852446B1 (ko) * 2000-10-16 2008-08-14 슈바르테, 루돌프 신호 파형의 진폭 및 위상을 감지 및 처리하기 위한 방법
FI113514B (fi) * 2000-11-15 2004-04-30 Elektrobit Oy Menetelmä radiokanavan simuloimiseksi ja kanavasimulaattori
US6859641B2 (en) * 2001-06-21 2005-02-22 Applied Signal Technology, Inc. Adaptive canceller for frequency reuse systems
US7460605B2 (en) * 2001-11-15 2008-12-02 Lawrence Livermore National Security, Llc Time reversal communication system
US8150362B2 (en) * 2003-04-03 2012-04-03 Maxim Integrated Products, Inc. Electronically tuned agile integrated bandpass filter
US7206357B2 (en) * 2003-11-04 2007-04-17 Terayon Communications Systems, Inc. System and method for an improved quadrature upconverter for I/Q modulation using intermediate frequency carriers

Also Published As

Publication number Publication date
CA2562518A1 (fr) 2005-11-03
JP2007533228A (ja) 2007-11-15
US20070211788A1 (en) 2007-09-13
FR2868894A1 (fr) 2005-10-14
WO2005104473A1 (fr) 2005-11-03
CN100574290C (zh) 2009-12-23
JP4703641B2 (ja) 2011-06-15
WO2005104473A8 (fr) 2006-11-23
EP1735978A1 (fr) 2006-12-27
US7653137B2 (en) 2010-01-26
FR2868894B1 (fr) 2006-08-18
CA2562518C (fr) 2014-09-02
CN1969519A (zh) 2007-05-23
EP1735978B1 (fr) 2016-06-01

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