WO2008037739A3 - Reduction of peak-to-average-power ratio in a telecommunications system - Google Patents

Reduction of peak-to-average-power ratio in a telecommunications system Download PDF

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Publication number
WO2008037739A3
WO2008037739A3 PCT/EP2007/060215 EP2007060215W WO2008037739A3 WO 2008037739 A3 WO2008037739 A3 WO 2008037739A3 EP 2007060215 W EP2007060215 W EP 2007060215W WO 2008037739 A3 WO2008037739 A3 WO 2008037739A3
Authority
WO
WIPO (PCT)
Prior art keywords
frequency components
complex frequency
different sets
generated
symbols
Prior art date
Application number
PCT/EP2007/060215
Other languages
French (fr)
Other versions
WO2008037739A2 (en
Inventor
Jacobus Haartsen
Original Assignee
Ericsson Telefon Ab L M
Jacobus Haartsen
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 Ericsson Telefon Ab L M, Jacobus Haartsen filed Critical Ericsson Telefon Ab L M
Priority to JP2009529696A priority Critical patent/JP2010505314A/en
Priority to EP07820610A priority patent/EP2074779A2/en
Publication of WO2008037739A2 publication Critical patent/WO2008037739A2/en
Publication of WO2008037739A3 publication Critical patent/WO2008037739A3/en

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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
    • 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
    • H04L27/2615—Reduction thereof using coding

Abstract

A single-carrier signal is generated from a number, N, of symbols in a way that results in a low PAPR. This includes generating an initial set of N complex frequency components from the N symbols. Ns different sets of N complex frequency components are generated by, for each of Ns times, permuting the initial set of N complex frequency components by one of Ns possible permutations. Ns different sets of M complex frequency components are generated by mapping each of the Ns different sets of N complex frequency components onto a set of M carrier frequencies. After shaping, an IDFT generates a candidate set of N time-domain symbols from each of the Ns different sets of M complex frequency components. That one of the Ns different candidate sets of N time-domain symbols that is associated with the smallest PAPR is selected for further processing.
PCT/EP2007/060215 2006-09-27 2007-09-26 Reduction of peak-to-average-power ratio in a telecommunications system WO2008037739A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009529696A JP2010505314A (en) 2006-09-27 2007-09-26 Method for reducing peak-to-average power ratio in a communication system
EP07820610A EP2074779A2 (en) 2006-09-27 2007-09-26 Reduction of peak-to-average-power ratio in a telecommunications system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US82709306P 2006-09-27 2006-09-27
US60/827,093 2006-09-27
US11/684,683 2007-03-12
US11/684,683 US7848446B2 (en) 2006-09-27 2007-03-12 Reduction of peak-to-average-power ratio in a telecommunications system

Publications (2)

Publication Number Publication Date
WO2008037739A2 WO2008037739A2 (en) 2008-04-03
WO2008037739A3 true WO2008037739A3 (en) 2008-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060215 WO2008037739A2 (en) 2006-09-27 2007-09-26 Reduction of peak-to-average-power ratio in a telecommunications system

Country Status (4)

Country Link
US (1) US7848446B2 (en)
EP (1) EP2074779A2 (en)
JP (1) JP2010505314A (en)
WO (1) WO2008037739A2 (en)

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Also Published As

Publication number Publication date
US7848446B2 (en) 2010-12-07
WO2008037739A2 (en) 2008-04-03
JP2010505314A (en) 2010-02-18
EP2074779A2 (en) 2009-07-01
US20080075191A1 (en) 2008-03-27

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