WO2009075144A1 - 無線通信装置および直流オフセット調整方法 - Google Patents

無線通信装置および直流オフセット調整方法 Download PDF

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Publication number
WO2009075144A1
WO2009075144A1 PCT/JP2008/069489 JP2008069489W WO2009075144A1 WO 2009075144 A1 WO2009075144 A1 WO 2009075144A1 JP 2008069489 W JP2008069489 W JP 2008069489W WO 2009075144 A1 WO2009075144 A1 WO 2009075144A1
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WO
WIPO (PCT)
Prior art keywords
offset
modulation
orthogonal
receiving side
phase
Prior art date
Application number
PCT/JP2008/069489
Other languages
English (en)
French (fr)
Inventor
Masahiro Kawai
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to EP08859315A priority Critical patent/EP2222045A1/en
Priority to CN200880120017.3A priority patent/CN101897163B/zh
Priority to US12/742,577 priority patent/US8396433B2/en
Priority to JP2009545369A priority patent/JPWO2009075144A1/ja
Publication of WO2009075144A1 publication Critical patent/WO2009075144A1/ja

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion

Abstract

　送信側において、直交変調手段は、キャリアリーク調整時、受信側と異なる周波数の搬送波を用いて送信信号を直交変調する。フィードバック手段は、直交変調して得られた変調波を受信側に折り返す。受信側において、直交復調手段は、折り返された変調波を直交復調する。位相固定手段は、直交復調で得られた信号の位相を送信側に合わせて固定する。オフセット検出手段は、位相の固定された信号の時間平均をとることにより直流オフセットを検出する。送信側において、オフセット調整手段は、受信側で検出された直流オフセットの値に基づいて、直交変調する送信信号の直流オフセットを補正する。
PCT/JP2008/069489 2007-12-10 2008-10-28 無線通信装置および直流オフセット調整方法 WO2009075144A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08859315A EP2222045A1 (en) 2007-12-10 2008-10-28 Wireless communication device and dc offset adjustment method
CN200880120017.3A CN101897163B (zh) 2007-12-10 2008-10-28 无线电通信设备和dc偏移调整方法
US12/742,577 US8396433B2 (en) 2007-12-10 2008-10-28 Radio communication apparatus and DC offset adjustment method
JP2009545369A JPWO2009075144A1 (ja) 2007-12-10 2008-10-28 無線通信装置および直流オフセット調整方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007318444 2007-12-10
JP2007-318444 2007-12-10

Publications (1)

Publication Number Publication Date
WO2009075144A1 true WO2009075144A1 (ja) 2009-06-18

Family

ID=40755389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/069489 WO2009075144A1 (ja) 2007-12-10 2008-10-28 無線通信装置および直流オフセット調整方法

Country Status (5)

Country Link
US (1) US8396433B2 (ja)
EP (1) EP2222045A1 (ja)
JP (1) JPWO2009075144A1 (ja)
CN (1) CN101897163B (ja)
WO (1) WO2009075144A1 (ja)

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JP4241765B2 (ja) * 2006-03-01 2009-03-18 株式会社日立国際電気 送信機及びキャリアリーク検出方法
JP5588407B2 (ja) * 2011-08-26 2014-09-10 株式会社東芝 Ａｄ変換装置およびｄｃ−ｄｃ変換装置
WO2018226028A1 (ko) * 2017-06-07 2018-12-13 한국전자통신연구원 주파수/타이밍 옵셋을 위한 게이트웨이 시그널링 방법 및 이를 위한 장치
KR20180133804A (ko) * 2017-06-07 2018-12-17 한국전자통신연구원 주파수/타이밍 옵셋을 위한 게이트웨이 시그널링 방법 및 이를 위한 장치
CN109547041B (zh) * 2018-11-20 2020-01-10 南京航空航天大学 微波功率发生电路及多路输出可调的微波功率发生装置
EP4239921A1 (en) * 2022-02-09 2023-09-06 Nokia Solutions and Networks Oy Dynamic error rate target for link adaptation

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Publication number Priority date Publication date Assignee Title
JPH06244892A (ja) * 1993-02-18 1994-09-02 Toshiba Corp 位相比較器
JP3221326B2 (ja) * 1996-09-03 2001-10-22 松下電器産業株式会社 送信装置
US6606483B1 (en) * 2000-10-10 2003-08-12 Motorola, Inc. Dual open and closed loop linear transmitter
WO2004023667A1 (en) * 2002-09-03 2004-03-18 Athena Semiconductors, Inc. Direct-conversion transceiver enabling digital calibration
WO2005002063A2 (en) * 2003-06-06 2005-01-06 Interdigital Technology Corporation Method and system for suppressing carrier leakage
WO2005025168A1 (ja) * 2003-09-05 2005-03-17 Fujitsu Limited オフセット補償装置
WO2006072973A1 (ja) * 2005-01-04 2006-07-13 Fujitsu Limited Ｄｃオフセット補償方法及びｄｃオフセット補償装置
WO2007020711A1 (ja) * 2005-08-19 2007-02-22 Fujitsu Limited Ｄｃオフセット補正装置及びその方法
JP2007208380A (ja) 2006-01-31 2007-08-16 Fujitsu Ltd Ｄｃオフセット補正装置及びその方法
JP2007318444A (ja) 2006-05-25 2007-12-06 Matsushita Electric Ind Co Ltd アンテナ装置、監視装置、及び車輌

Also Published As

Publication number Publication date
US8396433B2 (en) 2013-03-12
CN101897163B (zh) 2014-02-12
US20100273439A1 (en) 2010-10-28
JPWO2009075144A1 (ja) 2011-04-28
CN101897163A (zh) 2010-11-24
EP2222045A1 (en) 2010-08-25

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