BR9906405A - "aparelho de transmissão" - Google Patents

"aparelho de transmissão"

Info

Publication number
BR9906405A
BR9906405A BR9906405-7A BR9906405A BR9906405A BR 9906405 A BR9906405 A BR 9906405A BR 9906405 A BR9906405 A BR 9906405A BR 9906405 A BR9906405 A BR 9906405A
Authority
BR
Brazil
Prior art keywords
peak power
amplitude
coefficient
filter
suppress
Prior art date
Application number
BR9906405-7A
Other languages
English (en)
Inventor
Katsuhiko Hiramatsu
Mitsuru Uesugi
Masatoshi Watanabe
Toyoki Ue
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BR9906405A publication Critical patent/BR9906405A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Patente de Invenção:<B>"APARELHO DE TRANSMISSãO"<D>. Os sinais sujeitos à modulação ortogonal com uma pluralidade de freq³ências de portadora são adicionados para detectar a potência de pico. Baseado na potência de pico, um coeficiente para suprimir uma amplitude de um sinal de banda de base de transmissão é calculado. Utilizando o coeficiente, a amplitude de um sinal de banda de base a ser injetado em um filtro é suprimido. é portanto possível suprimir a potência de pico garantidamente, e pelos efeitos do filtro, freq³ências desnecessárias não são geradas.
BR9906405-7A 1998-04-28 1999-04-27 "aparelho de transmissão" BR9906405A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11956298A JP3462388B2 (ja) 1998-04-28 1998-04-28 無線通信装置
PCT/JP1999/002260 WO1999056425A1 (fr) 1998-04-28 1999-04-27 Emetteur

Publications (1)

Publication Number Publication Date
BR9906405A true BR9906405A (pt) 2000-09-26

Family

ID=14764410

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906405-7A BR9906405A (pt) 1998-04-28 1999-04-27 "aparelho de transmissão"

Country Status (9)

Country Link
US (1) US6522869B1 (pt)
EP (1) EP0993136A4 (pt)
JP (1) JP3462388B2 (pt)
KR (1) KR100367433B1 (pt)
CN (1) CN1118976C (pt)
AU (1) AU733765B2 (pt)
BR (1) BR9906405A (pt)
CA (1) CA2294140C (pt)
WO (1) WO1999056425A1 (pt)

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JP3462388B2 (ja) 1998-04-28 2003-11-05 松下電器産業株式会社 無線通信装置
US6590906B1 (en) * 1998-08-24 2003-07-08 Matsushita Electric Industrial Co., Ltd. Multi-carrier transmitter circuit and communication equipment
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US6813317B2 (en) * 1999-12-14 2004-11-02 Matsushita Electric Industrial Co., Ltd. Multicarrier transmitting method and multicarrier transmitter circuit
AU2001241825A1 (en) * 2000-04-19 2001-11-07 Powerwave Technologies, Inc. System and method for peak power reduction in spread spectrum communications systems
US6449303B2 (en) * 2000-06-20 2002-09-10 Powerwave Technologies, Inc. System and method for peak power reduction in multiple carrier communications systems
DE60038369T2 (de) * 2000-06-28 2009-03-05 Sony Deutschland Gmbh Vorrichtung zur modulationserkennung
EP1302045A2 (en) 2000-07-21 2003-04-16 PMC-Sierra Ltd. Reduction of peak to average power ratio
JP3490384B2 (ja) * 2000-07-31 2004-01-26 松下電器産業株式会社 マルチキャリアｃｄｍａ通信装置
US6747964B1 (en) * 2000-09-15 2004-06-08 Qualcomm Incorporated Method and apparatus for high data rate transmission in a wireless communication system
CN1147177C (zh) * 2000-09-26 2004-04-21 华为技术有限公司 一种提高宽带多载波基站载波输出功率的方法及其装置
US7353004B2 (en) * 2001-11-01 2008-04-01 Broadlogic Network Technologies, Inc. Multi-channel broadband content distribution system
JP2003174370A (ja) 2001-12-05 2003-06-20 Nec Corp 非線形補償回路と基地局装置および送信電力クリップ方法
JP2003258768A (ja) 2002-02-27 2003-09-12 Fujitsu Ltd 拡散信号多重化回路
FI20020820A0 (fi) 2002-04-30 2002-04-30 Nokia Corp Menetelmä signaalin rajoittamiseksi ja lähetin
JP3796204B2 (ja) 2002-07-31 2006-07-12 松下電器産業株式会社 マルチキャリア送信信号のピーク抑圧方法およびピーク抑圧機能をもつマルチキャリア送信信号生成回路
US6888393B2 (en) 2002-09-04 2005-05-03 Hitachi Kokusai Electric, Inc. Amplitude limiting apparatus and multi-carrier signal generating apparatus
US7489907B2 (en) 2002-10-23 2009-02-10 Hitachi Kokusai Electric Inc. Transmitter for suppressing a variation in input level of a multicarrier signal
JP4287225B2 (ja) * 2003-09-18 2009-07-01 株式会社日立国際電気 送信機
US20050201180A1 (en) * 2004-03-05 2005-09-15 Qualcomm Incorporated System and methods for back-off and clipping control in wireless communication systems
JP2006174364A (ja) * 2004-12-20 2006-06-29 Fujitsu Ltd マルチキャリア信号送信装置、マルチキャリア信号受信装置、マルチキャリア信号送信方法、マルチキャリア信号受信方法、及び通信システム
JP2007194825A (ja) * 2006-01-18 2007-08-02 Fujitsu Ltd マルチキャリア信号送信装置
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
US8693525B2 (en) 2006-07-14 2014-04-08 Qualcomm Incorporated Multi-carrier transmitter for wireless communication
JP4927585B2 (ja) * 2007-02-15 2012-05-09 株式会社日立国際電気 送信機
CN101647217B (zh) * 2007-04-13 2013-02-27 富士通株式会社 峰值抑制电路、发送装置以及峰值抑制方法
US8259846B2 (en) * 2008-07-30 2012-09-04 Motorola Mobility Llc Apparatus and method for generating a multicarrier communication signal having a reduced crest factor
US9161321B2 (en) * 2010-09-20 2015-10-13 Mediatek Inc. Method and apparatus providing signal metric for transmitter
TWI413779B (zh) * 2011-06-22 2013-11-01 Novatek Microelectronics Corp 支援零中頻或低中頻／中頻系統之架構及方法
WO2013136860A1 (ja) * 2012-03-12 2013-09-19 日本電気株式会社 送信装置および送信方法
JP5681683B2 (ja) * 2012-09-18 2015-03-11 アンリツ株式会社 移動端末試験装置及び移動端末試験方法
WO2014141335A1 (ja) * 2013-03-15 2014-09-18 日本電気株式会社 通信装置及びそのピーク抑圧方法
JP2016082549A (ja) * 2014-10-22 2016-05-16 富士通株式会社 ピーク抑圧装置
CN106452621B (zh) 2016-07-19 2018-03-06 创达特（苏州）科技有限责任公司 一种峰值功率、峰均值功率比的确定方法及装置

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JP3537988B2 (ja) * 1997-03-25 2004-06-14 松下電器産業株式会社 無線送信装置
JP3462388B2 (ja) 1998-04-28 2003-11-05 松下電器産業株式会社 無線通信装置

Also Published As

Publication number Publication date
EP0993136A4 (en) 2005-06-08
US6522869B1 (en) 2003-02-18
CA2294140C (en) 2003-12-16
CN1118976C (zh) 2003-08-20
AU3538399A (en) 1999-11-16
KR20010014248A (ko) 2001-02-26
CN1266568A (zh) 2000-09-13
JP3462388B2 (ja) 2003-11-05
JPH11313042A (ja) 1999-11-09
WO1999056425A1 (fr) 1999-11-04
EP0993136A1 (en) 2000-04-12
KR100367433B1 (ko) 2003-01-10
CA2294140A1 (en) 1999-11-04
AU733765B2 (en) 2001-05-24

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: MATSUSHITA ELECTRIC IND. CO. LTDA (JP)

Free format text: NOME ALTERADO DE: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM O ART. 13 DA LPI.

B25K Entry of change of name and/or headquarter and transfer of application, patent and certificate of addition of invention: republication

Owner name: PANASONIC CORPORATION (JP)

Free format text: RETIFICACAO DO DESPACHO 25.4 PUBLICADO NA RPI NO 2111, DE 21/06/2011, QUANTO AO ITEM (71) - NOME DODEPOSITANTE. ONDE SE LE: "MATSUSHITA ELECTRIC IND. CO. LTDA"; LEIA-SE: "PANASONIC CORPORATION".

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.