WO2008152930A1 - 測定装置およびプログラム - Google Patents

測定装置およびプログラム Download PDF

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Publication number
WO2008152930A1
WO2008152930A1 PCT/JP2008/060077 JP2008060077W WO2008152930A1 WO 2008152930 A1 WO2008152930 A1 WO 2008152930A1 JP 2008060077 W JP2008060077 W JP 2008060077W WO 2008152930 A1 WO2008152930 A1 WO 2008152930A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
signal
component
modulation signal
measuring device
Prior art date
Application number
PCT/JP2008/060077
Other languages
English (en)
French (fr)
Inventor
Takashi Shimura
Original Assignee
Advantest 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 Advantest Corporation filed Critical Advantest Corporation
Priority to DE112008001573T priority Critical patent/DE112008001573T5/de
Priority to JP2009519221A priority patent/JP5161877B2/ja
Publication of WO2008152930A1 publication Critical patent/WO2008152930A1/ja
Priority to US12/614,803 priority patent/US8165836B2/en

Links

Classifications

    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H04L27/3863—Compensation for quadrature error in the received signal
    • 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
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H04L27/364—Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Measuring Magnetic Variables (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

　所定周波数のキャリア信号により変調された変調信号の電力を測定する測定装置であって、変調信号をＡＤ変換したデジタル変調信号を出力するＡＤ変換部と、デジタル変調信号を周波数毎の信号成分を表す周波数成分信号に変換する周波数変換部と、変調信号を伝送する伝送経路の周波数特性に応じた周波数毎の補正係数を出力する補正係数出力部と、周波数成分信号に含まれる周波数の信号成分のそれぞれを、対応する周波数の補正係数により補正する補正部と、補正済みの周波数成分信号に含まれる周波数毎の信号成分に基づき、変調信号の電力を算出する電力算出部とを備える測定装置を提供する。
PCT/JP2008/060077 2007-06-11 2008-05-30 測定装置およびプログラム WO2008152930A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112008001573T DE112008001573T5 (de) 2007-06-11 2008-05-30 Messgerät und Programm
JP2009519221A JP5161877B2 (ja) 2007-06-11 2008-05-30 測定装置およびプログラム
US12/614,803 US8165836B2 (en) 2007-06-11 2009-11-09 Measurement apparatus and computer readable medium storing program for measuring error of a quadrature demodulator or quadrature modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-154101 2007-06-11
JP2007154101 2007-06-11

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/614,803 Continuation US8165836B2 (en) 2007-06-11 2009-11-09 Measurement apparatus and computer readable medium storing program for measuring error of a quadrature demodulator or quadrature modulator

Publications (1)

Publication Number Publication Date
WO2008152930A1 true WO2008152930A1 (ja) 2008-12-18

Family

ID=40129540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/060077 WO2008152930A1 (ja) 2007-06-11 2008-05-30 測定装置およびプログラム

Country Status (5)

Country Link
US (1) US8165836B2 (ja)
JP (1) JP5161877B2 (ja)
DE (1) DE112008001573T5 (ja)
TW (1) TWI401442B (ja)
WO (1) WO2008152930A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011188436A (ja) * 2010-03-11 2011-09-22 Advantest Corp 測定装置、測定方法およびプログラム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001333120A (ja) * 1999-05-24 2001-11-30 Advantest Corp 直交復調装置、方法、記録媒体
JP2004248115A (ja) * 2003-02-17 2004-09-02 Nippon Telegr & Teleph Corp <Ntt> タイミング誤差検出回路
JP2005244358A (ja) * 2004-02-24 2005-09-08 Advantest Corp 直交変調装置、方法、プログラム、記録媒体
JP2008022243A (ja) * 2006-07-12 2008-01-31 Toshiba Corp 通信装置、直交誤差補償の設定値算出方法および直交誤差補償プログラム

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230099A (en) * 1991-01-24 1993-07-20 Rockwell International Corporation System for controlling phase and gain errors in an i/q direct conversion receiver
GB9209982D0 (en) * 1992-05-08 1992-06-24 British Tech Group Method and apparatus for amplifying modulating and demodulating
FI117494B (fi) * 1996-11-29 2006-10-31 Nokia Corp Menetelmä digitaalisessa kvadratuurimodulaattorissa ja kvadratuuridemodulaattorissa, digitaalinen kvadratuurimodulaattori ja kvadratuuridemodulaattori
JP4173247B2 (ja) 1999-04-30 2008-10-29 株式会社アドバンテスト 直交変調信号評価方法及びこの評価方法を用いた直交変調信号評価装置
US20030128777A1 (en) * 2001-12-04 2003-07-10 Linsky Stuart T. Decision directed phase locked loops (DD-PLL) with multiple initial phase and/or frequency estimates in digital communication systems
US6781447B2 (en) * 2001-12-04 2004-08-24 Northrop Grumman Space & Mission Systems Corporation Space Technology Multi-pass phase tracking loop with rewind of current waveform in digital communication systems
US7123665B2 (en) * 2003-05-09 2006-10-17 Texas Instruments Incorporated Method and apparatus for measuring phase error of a modulated signal
DE102006017868A1 (de) * 2006-04-13 2007-10-18 Micronas Gmbh Verfahren und Schaltung zur Trägerregelung in einem Quadraturdemodulator
WO2008047684A1 (fr) * 2006-10-17 2008-04-24 Advantest Corporation Appareil de mesure, procédé de mesure, programme et appareil d'expérimentation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001333120A (ja) * 1999-05-24 2001-11-30 Advantest Corp 直交復調装置、方法、記録媒体
JP2004248115A (ja) * 2003-02-17 2004-09-02 Nippon Telegr & Teleph Corp <Ntt> タイミング誤差検出回路
JP2005244358A (ja) * 2004-02-24 2005-09-08 Advantest Corp 直交変調装置、方法、プログラム、記録媒体
JP2008022243A (ja) * 2006-07-12 2008-01-31 Toshiba Corp 通信装置、直交誤差補償の設定値算出方法および直交誤差補償プログラム

Also Published As

Publication number Publication date
US20100153042A1 (en) 2010-06-17
DE112008001573T5 (de) 2010-05-06
TWI401442B (zh) 2013-07-11
TW200902989A (en) 2009-01-16
JP5161877B2 (ja) 2013-03-13
US8165836B2 (en) 2012-04-24
JPWO2008152930A1 (ja) 2010-08-26

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