DE60125643D1 - Verringerung der Spitzenleistung in einem Mehrträgermodulator - Google Patents

Verringerung der Spitzenleistung in einem Mehrträgermodulator

Info

Publication number
DE60125643D1
DE60125643D1 DE60125643T DE60125643T DE60125643D1 DE 60125643 D1 DE60125643 D1 DE 60125643D1 DE 60125643 T DE60125643 T DE 60125643T DE 60125643 T DE60125643 T DE 60125643T DE 60125643 D1 DE60125643 D1 DE 60125643D1
Authority
DE
Germany
Prior art keywords
reduction
peak power
multicarrier modulator
multicarrier
modulator
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 - Lifetime
Application number
DE60125643T
Other languages
English (en)
Other versions
DE60125643T2 (de
Inventor
Miguel Philipe Paul Peeters
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.)
Broadcom Corp
Original Assignee
Broadcom Corp
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
Priority claimed from GB0015236A external-priority patent/GB0015236D0/en
Application filed by Broadcom Corp filed Critical Broadcom Corp
Publication of DE60125643D1 publication Critical patent/DE60125643D1/de
Application granted granted Critical
Publication of DE60125643T2 publication Critical patent/DE60125643T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04L27/26—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)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Noise Elimination (AREA)
  • Picture Signal Circuits (AREA)
DE60125643T 2000-06-21 2001-06-21 Verringerung der Spitzenleistung in einem Mehrträgermodulator Expired - Lifetime DE60125643T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0015236 2000-06-21
GB0015236A GB0015236D0 (en) 2000-06-21 2000-06-21 Processing of multi-carrier signal
GB0017726A GB2364488A (en) 2000-06-21 2000-07-19 Peak power reduction
GB0017726 2000-07-19

Publications (2)

Publication Number Publication Date
DE60125643D1 true DE60125643D1 (de) 2007-02-15
DE60125643T2 DE60125643T2 (de) 2007-10-04

Family

ID=26244525

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60125643T Expired - Lifetime DE60125643T2 (de) 2000-06-21 2001-06-21 Verringerung der Spitzenleistung in einem Mehrträgermodulator

Country Status (3)

Country Link
US (2) US6931079B1 (de)
EP (1) EP1168748B1 (de)
DE (1) DE60125643T2 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170952B2 (en) * 2001-07-02 2007-01-30 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in communications systems
US7095798B2 (en) * 2001-08-02 2006-08-22 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in multi-carrier communications systems
FI20020820A0 (fi) * 2002-04-30 2002-04-30 Nokia Corp Menetelmä signaalin rajoittamiseksi ja lähetin
US7212583B2 (en) * 2002-11-27 2007-05-01 Nokia Corporation Transmission of signal
DE10320917A1 (de) * 2003-05-09 2004-12-09 Infineon Technologies Ag Verfahren und Schaltung zur Crestfaktor-Reduzierung
US7286605B2 (en) * 2003-09-30 2007-10-23 Infineon Technologies Ag Method and apparatus for reducing a crest factor of a multi-tone data signal
US7864874B2 (en) 2005-09-15 2011-01-04 Powerwave Technologies, Inc. OFDM communications system employing crest factor reduction with ISI control
WO2007043151A1 (ja) * 2005-10-06 2007-04-19 Matsushita Electric Industrial Co., Ltd. マルチキャリア送信装置
KR101083944B1 (ko) * 2005-12-21 2011-11-15 엘지에릭슨 주식회사 입력신호의 전력변화에 따른 적응성 ｃｆｒ 장치 및 그방법
US7664472B2 (en) * 2006-02-23 2010-02-16 Raytheon Company Reducing the peak-to-average power ratio of a signal
JP4750592B2 (ja) * 2006-03-17 2011-08-17 富士通株式会社 ピーク抑圧方法、ピーク抑圧装置、無線送信装置
US8165539B2 (en) * 2006-07-03 2012-04-24 Telefonaktiebolaget L M Ericsson (Publ) Apparatuses and a method for reducing peak power in telecommunications systems
KR101714784B1 (ko) * 2010-01-25 2017-03-10 삼성전자주식회사 피크 윈도윙을 이용한 피크대평균전력비 감소 방법 및 장치
US8848813B2 (en) * 2012-12-10 2014-09-30 Texas Instruments Incorporated OFDM PAR reduction by substituting original in-band subcarriers after clipping
GB2527865B (en) * 2014-10-30 2016-12-14 Imagination Tech Ltd Controlling operational characteristics of an acoustic echo canceller
CN107438044B (zh) * 2016-05-10 2021-09-03 恩智浦美国有限公司 噪声整形波峰因数降低（cfr）方法和装置
US9967123B1 (en) 2017-02-07 2018-05-08 Texas Instruments Incorporated Peak-to-average power reduction using guard tone filtering
US10615778B2 (en) * 2018-02-19 2020-04-07 Analog Devices, Inc. Crest factor reduction
CN112166585B (zh) 2018-06-01 2024-02-23 瑞典爱立信有限公司 超宽带峰值因子降低
FI20195895A1 (en) * 2019-10-16 2021-04-17 Nokia Solutions & Networks Oy Distribution of limiting noise between bands
US11032112B2 (en) 2019-10-18 2021-06-08 Motorola Solutions, Inc. Multi-carrier crest factor reduction

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142580A (en) * 1989-03-16 1992-08-25 Neil J Philip Voice band reduction apparatus and method for increasing availability of voice channels
US5631969A (en) * 1993-03-25 1997-05-20 Ericsson Inc. System for limiting the magnitude of sampled data
US5623513A (en) * 1993-12-13 1997-04-22 Amati Communications Corporation Mitigating clipping and quantization effects in digital transmission systems
FR2758030B1 (fr) 1996-12-31 1999-03-26 Sgs Thomson Microelectronics Procede et dispositif de mise en forme d'un bruit d'ecretage d'une modulation multiporteuse
FR2771242B1 (fr) * 1997-11-14 2003-10-24 Itis Procede et dispositif pour reduire le facteur de crete de signaux de radiodiffusion ou telediffusion numerique
US6363109B1 (en) * 1998-02-03 2002-03-26 Texas Instruments Incorporated Methods and device for estimating and correcting clipping in a discrete multi-tone communications system
US6597746B1 (en) * 1999-02-18 2003-07-22 Globespanvirata, Inc. System and method for peak to average power ratio reduction
US6553081B1 (en) * 1999-05-06 2003-04-22 Adtran, Inc. Method and apparatus for removing DC from the output of a precoder in a transmitter of a data communication system

Also Published As

Publication number Publication date
US7187722B2 (en) 2007-03-06
EP1168748A3 (de) 2005-06-08
US20050232373A1 (en) 2005-10-20
EP1168748B1 (de) 2007-01-03
DE60125643T2 (de) 2007-10-04
EP1168748A2 (de) 2002-01-02
US6931079B1 (en) 2005-08-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: BOSCH JEHLE PATENTANWALTSGESELLSCHAFT MBH, 80639 M