NO20021581L - Fremgangsmåte for å bestemme ubalanse i amplituden på mottagersiden og kvadraturfeil i et multib¶rersystem - Google Patents

Fremgangsmåte for å bestemme ubalanse i amplituden på mottagersiden og kvadraturfeil i et multib¶rersystem

Info

Publication number
NO20021581L
NO20021581L NO20021581A NO20021581A NO20021581L NO 20021581 L NO20021581 L NO 20021581L NO 20021581 A NO20021581 A NO 20021581A NO 20021581 A NO20021581 A NO 20021581A NO 20021581 L NO20021581 L NO 20021581L
Authority
NO
Norway
Prior art keywords
user data
multibore
procedure
receiver side
side amplitude
Prior art date
Application number
NO20021581A
Other languages
English (en)
Other versions
NO20021581D0 (no
Inventor
Christoph Balz
Martin Hofmeister
Original Assignee
Rohde & Schwarz
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 Rohde & Schwarz filed Critical Rohde & Schwarz
Publication of NO20021581D0 publication Critical patent/NO20021581D0/no
Publication of NO20021581L publication Critical patent/NO20021581L/no

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
    • H04L27/2647—Arrangements specific to the receiver only
    • 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
    • H04L27/3809—Amplitude regulation arrangements
    • 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
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Foimålet med oppfinnelsen er å bestemme brukerdatakonstellasjonen til et multibærersignal på mottagersiden. Nevnte signal er QAM-modulert i 2K-modus etter DVB-T-standarden og er forsynt med en sentralbærer i midten av enkeltbæreren og er midlertidig modulert med nyttedata og representerer midlertidig en fordelt pilot Forekomsthyppigheten av alle I/Q-verdiene av nyttedataandel til den sentrale bæreren detekteres og så bestemmes midtpunktet til denne nyttedatakonstellasjonen.
NO20021581A 1999-10-07 2002-04-03 Fremgangsmåte for å bestemme ubalanse i amplituden på mottagersiden og kvadraturfeil i et multib¶rersystem NO20021581L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948383A DE19948383A1 (de) 1999-10-07 1999-10-07 Verfahren zum empfangsseitigen Bestimmen der Nutzdatenkonstellation eines nach dem DVB-T-Standard modulierten Multiträger-Signals für die Berechnung der Restträgerleistung bzw. Verbesserung der Demodulation
PCT/EP2000/008623 WO2001026317A1 (de) 1999-10-07 2000-09-04 Verfahren zum empfangsseitigen bestimmen der amplituden-imbalanz und quadraturfehlers in einem multiträgersystem

Publications (2)

Publication Number Publication Date
NO20021581D0 NO20021581D0 (no) 2002-04-03
NO20021581L true NO20021581L (no) 2002-04-03

Family

ID=7924857

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20021581A NO20021581L (no) 1999-10-07 2002-04-03 Fremgangsmåte for å bestemme ubalanse i amplituden på mottagersiden og kvadraturfeil i et multib¶rersystem

Country Status (8)

Country Link
US (1) US7016426B1 (no)
EP (1) EP1219086B1 (no)
JP (1) JP2003511911A (no)
AT (1) ATE268527T1 (no)
AU (1) AU764459B2 (no)
DE (2) DE19948383A1 (no)
NO (1) NO20021581L (no)
WO (1) WO2001026317A1 (no)

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DE10005287A1 (de) 2000-02-07 2001-08-09 Rohde & Schwarz Verfahren zum Bestimmen der Restträgerleistung bei einem nach dem DVB-T-Standard im 8K-Modus QAM-modulierten Multiträgersignal
WO2003003686A1 (en) * 2001-06-29 2003-01-09 Nokia Corporation Iq-imbalance
EP1339197A1 (en) 2002-02-21 2003-08-27 Motorola, Inc. I/Q Mismatch compensation in an OFDM receiver in presence of frequency offset
DE10210656A1 (de) * 2002-03-11 2003-05-08 Siemens Ag Mehrträger-Übertragungssystem
JP3691449B2 (ja) * 2002-03-25 2005-09-07 三洋電機株式会社 ダイバーシティ回路およびこの回路を備えるダイバーシティ受信装置
US7567806B2 (en) * 2004-02-27 2009-07-28 Nokia Corporation Method and system to improve handover between mobile video networks and cells
CN100566317C (zh) * 2004-10-22 2009-12-02 财团法人工业技术研究院 基于频率相关性的相干正交频分复用接收器同步方法与装置
US20060088133A1 (en) * 2004-10-22 2006-04-27 Industrial Technology Research Institute Time-frequency correlation-based synchronization for coherent OFDM receiver
FR2878393B1 (fr) 2004-11-23 2007-01-12 Commissariat Energie Atomique Procede et dispositif de compensation de desequilibres d'un recepteur
EP1699202B1 (en) * 2005-03-03 2008-10-29 Dibcom Estimation of phase and gain mismatches by means of a weighted average of values that are calculated in a plurality of signal subbands
US7801250B2 (en) 2006-05-24 2010-09-21 General Dynamics Advanced Information Systems, Inc. Low latency analog QAM coherent demodulation algorithm
US7940861B2 (en) * 2007-12-07 2011-05-10 Advantech Advanced Microwave Technologies, Inc. QAM phase error detector
US9175388B2 (en) * 2008-11-01 2015-11-03 Ultratech, Inc. Reaction chamber with removable liner
DE102010012428A1 (de) * 2009-08-20 2011-02-24 Rohde & Schwarz Gmbh & Co. Kg Kodiervorrichtung, Vorrichtung zur Weiterverarbeitung eines digitalen Basisband- oder Zwischenfrequenzsignals, System und Verfahren zur externen digitalen Kodierung
US10382245B1 (en) * 2018-06-27 2019-08-13 Rohde & Schwarz Gmbh & Co. Kg Method for compressing IQ measurement data
CN114169380B (zh) * 2020-08-19 2025-09-16 Oppo广东移动通信有限公司 图像处理模型的训练方法、装置、电子设备及存储介质

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EP0324581A3 (en) 1988-01-13 1990-11-07 Hewlett-Packard Company Calibration of vector demodulator using statistical analysis
JPH03174851A (ja) * 1989-09-29 1991-07-30 Matsushita Electric Ind Co Ltd ディジタル被変調信号復号装置
GB9211712D0 (en) * 1992-06-03 1992-07-15 Fujitsu Microelectronics Ltd Gm digital receive processing
US5471508A (en) 1993-08-20 1995-11-28 Hitachi America, Ltd. Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation
US5970093A (en) * 1996-01-23 1999-10-19 Tiernan Communications, Inc. Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-Phase modulated signals
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DE19742670B4 (de) * 1997-09-26 2011-08-11 Telefonaktiebolaget Lm Ericsson (Publ) Verfahren, Empfänger und Mehrträger-QAM-System zur Demodulation eines analogen Mehrträger-QAM-Signals
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KR100314353B1 (ko) * 1998-04-28 2001-12-28 전주범 직교분할대역수신시스템
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DE19849319A1 (de) * 1998-10-26 2000-04-27 Rohde & Schwarz Verfahren zur Anzeige des Modulationsfehlers eines Multiträger-Signals
DE19849318A1 (de) * 1998-10-26 2000-04-27 Rohde & Schwarz Verfahren zum Verarbeiten von durch ein Mehrantennensystem gleichzeitig empfangenen OFDM-Signalen
DE19851093A1 (de) * 1998-11-05 2000-05-11 Rohde & Schwarz Verfahren zur meßtechnischen Auswertung von Multiträger-Signalen

Also Published As

Publication number Publication date
EP1219086B1 (de) 2004-06-02
EP1219086A1 (de) 2002-07-03
DE50006698D1 (de) 2004-07-08
NO20021581D0 (no) 2002-04-03
DE19948383A1 (de) 2001-04-12
ATE268527T1 (de) 2004-06-15
WO2001026317A1 (de) 2001-04-12
US7016426B1 (en) 2006-03-21
AU764459B2 (en) 2003-08-21
JP2003511911A (ja) 2003-03-25
AU7416800A (en) 2001-05-10

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