NO20014801L - Fremgangsmåte for reduksjon av topp/middel-effektforholdet for et Fourier-transformasjonsgenerert multib¶rebölgesignal ioverföringssystemer - Google Patents

Fremgangsmåte for reduksjon av topp/middel-effektforholdet for et Fourier-transformasjonsgenerert multib¶rebölgesignal ioverföringssystemer

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Publication number
NO20014801L
NO20014801L NO20014801A NO20014801A NO20014801L NO 20014801 L NO20014801 L NO 20014801L NO 20014801 A NO20014801 A NO 20014801A NO 20014801 A NO20014801 A NO 20014801A NO 20014801 L NO20014801 L NO 20014801L
Authority
NO
Norway
Prior art keywords
peak
signal
reducing
power ratio
multibore
Prior art date
Application number
NO20014801A
Other languages
English (en)
Other versions
NO20014801D0 (no
Inventor
Angelo Leva
Domenico Farnese
Giovanni Paltenghi
Arnaldo Spalvieri
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of NO20014801D0 publication Critical patent/NO20014801D0/no
Publication of NO20014801L publication Critical patent/NO20014801L/no

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2623—Reduction thereof by clipping
    • H04L27/2624—Reduction thereof by clipping by soft clipping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Det er beskrevet en fremgangsmåte for reduksjon av topp/middel-effektforholdet (PAR) for et multibærebølgesignal i sender/mottaker-systemer. Fremgangsmåten omfatter de trinn å tilveiebringe - ved sending. - et digitalt signal ( {X™}) som skal overføres, og å utsette et slikt signal som skal overføres, for en Fourier-transformasjon for å oppnå et modulert signal (|x(n)|). Fremgangsmåten er kjennetegnet ved de trinn å generere et antitoppsignal (| Anti -. peak()| ), å summere antitoppsignalet ( Anti. - peak()|) med det modulerte signal. (|x(n)|), og å overføre sumsignalet (x(n)). Oppfinnelsen tilveiebringer en sender og en mottaker for realisering av fremgangsmåten. Ved anvendelse av oppfinnelsen reduseres PAR-forholdet sammenliknet med de kjente teknikker.
NO20014801A 2000-10-04 2001-10-03 Fremgangsmåte for reduksjon av topp/middel-effektforholdet for et Fourier-transformasjonsgenerert multib¶rebölgesignal ioverföringssystemer NO20014801L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000MI002143A IT1318964B1 (it) 2000-10-04 2000-10-04 Metodo per ridurre il rapporto tra potenza di picco e potenza media diun segnale multiportante generato da traformata di fourier in sistemi

Publications (2)

Publication Number Publication Date
NO20014801D0 NO20014801D0 (no) 2001-10-03
NO20014801L true NO20014801L (no) 2002-04-05

Family

ID=11445903

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20014801A NO20014801L (no) 2000-10-04 2001-10-03 Fremgangsmåte for reduksjon av topp/middel-effektforholdet for et Fourier-transformasjonsgenerert multib¶rebölgesignal ioverföringssystemer

Country Status (4)

Country Link
US (1) US7545869B2 (no)
EP (1) EP1195962A3 (no)
IT (1) IT1318964B1 (no)
NO (1) NO20014801L (no)

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US10644916B1 (en) 2002-05-14 2020-05-05 Genghiscomm Holdings, LLC Spreading and precoding in OFDM
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GB2401516A (en) * 2003-04-17 2004-11-10 Univ Southampton Peak-to-average power ratio reduction by subtracting shaped pulses from a baseband signal
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US11431386B1 (en) 2004-08-02 2022-08-30 Genghiscomm Holdings, LLC Transmit pre-coding
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US8363749B2 (en) * 2008-05-05 2013-01-29 Industrial Technology Research Institute Peak to average power ratio reduction
US8885736B2 (en) * 2008-06-13 2014-11-11 Ikanos Communications, Inc. Systems and methods for positioning and messaging of reserved tones for peak-to-average ratio (PAR) reduction in DSL systems
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US8275067B2 (en) * 2008-06-13 2012-09-25 Ikanos Communications, Inc. Adaptive turbo peak mitigation for peak-to-average ratio (PAR) reduction using reserved tones
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US12206535B1 (en) 2018-06-17 2025-01-21 Tybalt, Llc Artificial neural networks in wireless communication systems
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Also Published As

Publication number Publication date
EP1195962A2 (en) 2002-04-10
ITMI20002143A1 (it) 2002-04-04
ITMI20002143A0 (it) 2000-10-04
US20020061068A1 (en) 2002-05-23
IT1318964B1 (it) 2003-09-19
US7545869B2 (en) 2009-06-09
EP1195962A3 (en) 2005-06-15
NO20014801D0 (no) 2001-10-03

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