DE602004016052D1 - Spitzenreduktion bei ofdm unter verwendung von clipping und modifizierten konstellationen - Google Patents

Spitzenreduktion bei ofdm unter verwendung von clipping und modifizierten konstellationen

Info

Publication number
DE602004016052D1
DE602004016052D1 DE602004016052T DE602004016052T DE602004016052D1 DE 602004016052 D1 DE602004016052 D1 DE 602004016052D1 DE 602004016052 T DE602004016052 T DE 602004016052T DE 602004016052 T DE602004016052 T DE 602004016052T DE 602004016052 D1 DE602004016052 D1 DE 602004016052D1
Authority
DE
Germany
Prior art keywords
clipping
ofdm
top reduction
modified constellations
constellations
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.)
Active
Application number
DE602004016052T
Other languages
English (en)
Inventor
Andreas Saul
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.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
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 NTT Docomo Inc filed Critical NTT Docomo Inc
Publication of DE602004016052D1 publication Critical patent/DE602004016052D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2604—Multiresolution systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
DE602004016052T 2004-03-12 2004-06-30 Spitzenreduktion bei ofdm unter verwendung von clipping und modifizierten konstellationen Active DE602004016052D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EPPCT/EP04/02608 2004-03-12
PCT/EP2004/007121 WO2005096580A1 (en) 2004-03-12 2004-06-30 Peak reduction in ofdm using clipping and modified constellations

Publications (1)

Publication Number Publication Date
DE602004016052D1 true DE602004016052D1 (de) 2008-10-02

Family

ID=34957068

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004016052T Active DE602004016052D1 (de) 2004-03-12 2004-06-30 Spitzenreduktion bei ofdm unter verwendung von clipping und modifizierten konstellationen

Country Status (5)

Country Link
US (1) US7467338B2 (de)
JP (1) JP4436410B2 (de)
CN (1) CN1965553B (de)
DE (1) DE602004016052D1 (de)
WO (1) WO2005096580A1 (de)

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US8331466B2 (en) * 2007-10-04 2012-12-11 Apple, Inc. Method and system for adaptive peak to average power ratio reduction in orthogonal frequency division multiplexing communication networks
JP2009100190A (ja) 2007-10-16 2009-05-07 Nec Corp マルチキャリア送信装置およびそのピーク抑圧方法
EP2071784B1 (de) * 2007-12-10 2013-05-22 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Verfahren und Vorrichtung zur Beurteilung der Verzögerungsstreuung
KR100909694B1 (ko) 2008-01-02 2009-07-29 재단법인서울대학교산학협력재단 적응적 톤 예약 장치 및 방법
JP5085351B2 (ja) * 2008-01-25 2012-11-28 株式会社エヌ・ティ・ティ・ドコモ 移動通信システムにおける送信装置及び方法
US8379752B2 (en) * 2008-03-19 2013-02-19 General Dynamics C4 Systems, Inc. Methods and apparatus for multiple-antenna communication of wireless signals with embedded synchronization/pilot sequences
US8331420B2 (en) * 2008-04-14 2012-12-11 General Dynamics C4 Systems, Inc. Methods and apparatus for multiple-antenna communication of wireless signals with embedded pilot signals
US8271842B2 (en) * 2008-06-13 2012-09-18 Qualcomm Incorporated Reducing harq retransmissions using peak power management techniques
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US20110150128A1 (en) * 2008-11-13 2011-06-23 Masazumi Yamazaki Modulation device and method
US8831117B2 (en) * 2009-04-27 2014-09-09 Xilinx, Inc. Peak-to-average power ratio reduction with bounded error vector magnitude
US8582687B2 (en) 2009-06-26 2013-11-12 Plusn, Llc System and method for controlling combined radio signals
US8355466B2 (en) * 2009-09-25 2013-01-15 General Dynamics C4 Systems, Inc. Cancelling non-linear power amplifier induced distortion from a received signal by moving incorrectly estimated constellation points
US8744009B2 (en) * 2009-09-25 2014-06-03 General Dynamics C4 Systems, Inc. Reducing transmitter-to-receiver non-linear distortion at a transmitter prior to estimating and cancelling known non-linear distortion at a receiver
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JP5598172B2 (ja) * 2010-08-30 2014-10-01 富士通株式会社 光受信器、光受信方法、および光伝送システム
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JP5699917B2 (ja) * 2011-11-25 2015-04-15 アイコム株式会社 通信機および通信方法
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US8582637B1 (en) 2012-06-20 2013-11-12 MagnaCom Ltd. Low-complexity, highly-spectrally-efficient communications
US8781008B2 (en) 2012-06-20 2014-07-15 MagnaCom Ltd. Highly-spectrally-efficient transmission using orthogonal frequency division multiplexing
US8811548B2 (en) 2012-11-14 2014-08-19 MagnaCom, Ltd. Hypotheses generation based on multidimensional slicing
US9088400B2 (en) 2012-11-14 2015-07-21 MagnaCom Ltd. Hypotheses generation based on multidimensional slicing
US9118519B2 (en) 2013-11-01 2015-08-25 MagnaCom Ltd. Reception of inter-symbol-correlated signals using symbol-by-symbol soft-output demodulator
US8804879B1 (en) 2013-11-13 2014-08-12 MagnaCom Ltd. Hypotheses generation based on multidimensional slicing
KR102283357B1 (ko) 2013-11-26 2021-07-28 플러스엔, 엘엘씨 무선 주파수 캐리어 집성을 위한 시스템 및 방법
CN104796364B (zh) * 2014-01-16 2018-02-27 京信通信系统（中国）有限公司 一种预失真参数求取方法及预失真处理系统
US9130637B2 (en) 2014-01-21 2015-09-08 MagnaCom Ltd. Communication methods and systems for nonlinear multi-user environments
US9496900B2 (en) 2014-05-06 2016-11-15 MagnaCom Ltd. Signal acquisition in a multimode environment
US8891701B1 (en) 2014-06-06 2014-11-18 MagnaCom Ltd. Nonlinearity compensation for reception of OFDM signals
US9246523B1 (en) * 2014-08-27 2016-01-26 MagnaCom Ltd. Transmitter signal shaping
US9276619B1 (en) 2014-12-08 2016-03-01 MagnaCom Ltd. Dynamic configuration of modulation and demodulation
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US10594530B2 (en) * 2018-05-29 2020-03-17 Qualcomm Incorporated Techniques for successive peak reduction crest factor reduction
EP4307571A4 (de) * 2021-03-30 2024-04-17 Huawei Tech Co Ltd Signalverarbeitungsverfahren und kommunikationsvorrichtung
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US7542517B2 (en) * 2004-02-02 2009-06-02 Ibiquity Digital Corporation Peak-to-average power reduction for FM OFDM transmission

Also Published As

Publication number Publication date
CN1965553A (zh) 2007-05-16
US20070089015A1 (en) 2007-04-19
JP2007529173A (ja) 2007-10-18
WO2005096580A1 (en) 2005-10-13
JP4436410B2 (ja) 2010-03-24
US7467338B2 (en) 2008-12-16
CN1965553B (zh) 2010-05-26

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