JP4927585B2 - 送信機 - Google Patents

送信機 Download PDF

Info

Publication number
JP4927585B2
JP4927585B2 JP2007034955A JP2007034955A JP4927585B2 JP 4927585 B2 JP4927585 B2 JP 4927585B2 JP 2007034955 A JP2007034955 A JP 2007034955A JP 2007034955 A JP2007034955 A JP 2007034955A JP 4927585 B2 JP4927585 B2 JP 4927585B2
Authority
JP
Japan
Prior art keywords
signal
carrier
suppression
peak power
peak
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 - Fee Related
Application number
JP2007034955A
Other languages
English (en)
Japanese (ja)
Other versions
JP2008199490A5 (enExample
JP2008199490A (ja
Inventor
貴史 岡田
淳 渡邊
高広 戸舘
典央 長谷川
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Kokusai Electric Inc
Kokusai Denki Electric 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 Hitachi Kokusai Electric Inc, Kokusai Denki Electric Inc filed Critical Hitachi Kokusai Electric Inc
Priority to JP2007034955A priority Critical patent/JP4927585B2/ja
Priority to CN2008100034445A priority patent/CN101247379B/zh
Priority to US12/068,926 priority patent/US7974581B2/en
Publication of JP2008199490A publication Critical patent/JP2008199490A/ja
Publication of JP2008199490A5 publication Critical patent/JP2008199490A5/ja
Application granted granted Critical
Publication of JP4927585B2 publication Critical patent/JP4927585B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • 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
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
JP2007034955A 2007-02-15 2007-02-15 送信機 Expired - Fee Related JP4927585B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007034955A JP4927585B2 (ja) 2007-02-15 2007-02-15 送信機
CN2008100034445A CN101247379B (zh) 2007-02-15 2008-01-15 发送机
US12/068,926 US7974581B2 (en) 2007-02-15 2008-02-13 Transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007034955A JP4927585B2 (ja) 2007-02-15 2007-02-15 送信機

Publications (3)

Publication Number Publication Date
JP2008199490A JP2008199490A (ja) 2008-08-28
JP2008199490A5 JP2008199490A5 (enExample) 2010-03-18
JP4927585B2 true JP4927585B2 (ja) 2012-05-09

Family

ID=39707096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007034955A Expired - Fee Related JP4927585B2 (ja) 2007-02-15 2007-02-15 送信機

Country Status (3)

Country Link
US (1) US7974581B2 (enExample)
JP (1) JP4927585B2 (enExample)
CN (1) CN101247379B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016500971A (ja) * 2012-10-25 2016-01-14 ゼットティーイー コーポレーションＺｔｅ Ｃｏｒｐｏｒａｔｉｏｎ マルチキャリアベースバンドのピーク除去装置及び方法

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101120685B1 (ko) * 2007-04-13 2012-03-22 후지쯔 가부시끼가이샤 피크 억압 방법
US8239176B2 (en) * 2008-02-13 2012-08-07 Feng Ma Simulation methods and systems for carriers having multiplications
JPWO2010061914A1 (ja) * 2008-11-28 2012-04-26 日本電気株式会社 ピーク抑圧装置およびピーク抑圧方法
CN101867541B (zh) * 2009-04-20 2013-02-13 大唐移动通信设备有限公司 一种信号波峰削除的方法及设备
JP5433327B2 (ja) * 2009-07-10 2014-03-05 株式会社日立製作所 ピークファクタ低減装置および基地局
WO2011070460A1 (en) * 2009-12-10 2011-06-16 Nokia Corporation Apparatus and method for cubic metric computation in dual-carrier and multi-carrier wireless communication system
CN102137054B (zh) * 2010-01-22 2016-03-30 爱立信(中国)通信有限公司 用于多载波信号传输的设备、系统和方法
JP5201158B2 (ja) * 2010-02-24 2013-06-05 住友電気工業株式会社 信号処理回路とこの回路を有する通信装置
JP5212402B2 (ja) 2010-02-24 2013-06-19 住友電気工業株式会社 ピーク電力抑制回路とこの回路を有する通信装置
CN101815348B (zh) * 2010-04-20 2013-01-02 广州市广晟微电子有限公司 一种数字信号功率计算装置及方法
US8411771B2 (en) * 2010-05-19 2013-04-02 Qualcomm Incorporated Predictive clipping in multi-carrier wireless communication systems
US8576942B2 (en) * 2011-09-07 2013-11-05 Panasonic Corporation High efficiency transmitter
US8583061B2 (en) 2011-11-04 2013-11-12 Motorola Solutions, Inc. Peak suppression on multicarrier
JP5923991B2 (ja) * 2012-01-18 2016-05-25 日本電気株式会社 ピークファクタ低減回路及びその制御方法
EP2947780B1 (en) * 2013-01-21 2020-04-15 NEC Corporation Peak suppression apparatus and peak suppression method
US9236899B2 (en) * 2013-06-05 2016-01-12 Telefonaktiebolaget L M Ericsson (Publ) Crest factor reduction of inter-band carrier aggregated signals
WO2016001781A1 (en) * 2014-06-30 2016-01-07 Telefonaktiebolaget L M Ericsson (Publ) Crest factor reduction of carrier aggregated signals
CN104580056A (zh) * 2014-12-15 2015-04-29 联想(北京)有限公司 一种多载波通信系统的载波调整方法及装置
GB201601751D0 (en) 2016-02-01 2016-03-16 Nat Univ Ireland Maynooth Improvements in and relating to power amplifiers
JP6776699B2 (ja) * 2016-07-27 2020-10-28 日本電気株式会社 ピーク抑圧回路及びピーク抑圧方法
CN110417702B (zh) * 2019-07-23 2021-06-15 三维通信股份有限公司 滤波器系数生成方法、系统和降低信号峰均比的系统
JP2021164000A (ja) * 2020-03-30 2021-10-11 古河電気工業株式会社 送信システムおよびピーク抑圧方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3235766B2 (ja) * 1995-06-12 2001-12-04 株式会社エヌ・ティ・ティ・ドコモ マルチキャリアピーク電力抑圧送信装置
JP3235769B2 (ja) * 1995-09-21 2001-12-04 株式会社エヌ・ティ・ティ・ドコモ 包絡線平滑化伝送装置及び受信装置
US5675287A (en) * 1996-02-12 1997-10-07 Motorola, Inc. Digital DC correction circuit for a linear transmitter
JP3462388B2 (ja) * 1998-04-28 2003-11-05 松下電器産業株式会社 無線通信装置
JP2000224133A (ja) * 1999-01-28 2000-08-11 Matsushita Electric Ind Co Ltd 周波数分割多重信号送受信装置と送受信方法
JP3478496B2 (ja) * 2000-11-24 2003-12-15 松下電器産業株式会社 送信電力制御方法及びその装置並びに通信装置
JP2002305489A (ja) * 2001-04-05 2002-10-18 Fujitsu Ltd 符号多重信号送信装置
JP3654526B2 (ja) * 2002-09-04 2005-06-02 株式会社日立国際電気 振幅制限装置
JP4184026B2 (ja) * 2002-10-03 2008-11-19 三菱電機株式会社 ピーク抑圧装置および送信装置
JP4318253B2 (ja) * 2002-10-23 2009-08-19 株式会社日立国際電気 送信機
JP3927521B2 (ja) * 2003-06-27 2007-06-13 株式会社日立国際電気 送信機
JP4287225B2 (ja) * 2003-09-18 2009-07-01 株式会社日立国際電気 送信機
US6931343B2 (en) * 2003-09-19 2005-08-16 Globespanvirata, Incorporated On-signal quadrature modulator calibration
JP2005269550A (ja) * 2004-03-22 2005-09-29 Matsushita Electric Ind Co Ltd ピーク電力抑圧装置およびピーク電力抑圧方法
JP2006115096A (ja) * 2004-10-13 2006-04-27 Matsushita Electric Ind Co Ltd マルチキャリア通信装置およびピーク電力抑圧方法
CN101702698B (zh) * 2004-11-01 2013-01-16 株式会社日立国际电气 发送机
JP4837669B2 (ja) * 2005-10-06 2011-12-14 パナソニック株式会社 マルチキャリア送信装置
US7796687B1 (en) * 2006-11-24 2010-09-14 Kiomars Anvari Enhanced reconditioning equalizer filter chain for multi-carrier signals with different technologies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016500971A (ja) * 2012-10-25 2016-01-14 ゼットティーイー コーポレーションＺｔｅ Ｃｏｒｐｏｒａｔｉｏｎ マルチキャリアベースバンドのピーク除去装置及び方法

Also Published As

Publication number Publication date
CN101247379B (zh) 2011-08-24
US7974581B2 (en) 2011-07-05
US20080200126A1 (en) 2008-08-21
CN101247379A (zh) 2008-08-20
JP2008199490A (ja) 2008-08-28

Similar Documents

Publication Publication Date Title
JP4927585B2 (ja) 送信機
US7873116B2 (en) Transmitter
US7839951B2 (en) Dynamic crest factor reduction system
US8446202B2 (en) Power limiting circuit
US8085870B2 (en) Transmitter
JP3927521B2 (ja) 送信機
KR20130009945A (ko) 피크 전력 억제 회로와 이 회로를 갖는 통신 장치
US20110249768A1 (en) Peak suppression device and peak suppression method
US8027406B2 (en) Transmitter
JP4836866B2 (ja) 通信装置
EP1890388B1 (en) Peak suppressor
JP6020599B2 (ja) ピーク抑圧装置及びピーク抑圧方法
US20120328048A1 (en) Peak suppressing apparatus, peak suppressing method and wireless communications apparatus
JP2010050765A (ja) ピークリミッタ回路
JP4847838B2 (ja) 送信機
JP4558813B2 (ja) 送信機
CN100555891C (zh) 发送机
JP2009100390A (ja) ピークファクタ低減装置および無線送信機
JP5233784B2 (ja) マルチキャリア送信信号のピークファクタ低減装置及び方法
JP2013042232A (ja) ピーク抑圧装置
JP2025136810A (ja) ピーク抑圧装置及びピーク抑圧方法
JP2024074577A (ja) Ｏｆｄｍ変調器及びプログラム
JP2005072959A (ja) 送信機

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100201

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100201

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20101216

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20110509

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20111028

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111115

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120110

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120131

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120209

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150217

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4927585

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees