ATE551810T1 - Iq-ungleichgewichts-bildunterdrückung bei anwesenheit einer unbekannten phasenverschiebung - Google Patents

Iq-ungleichgewichts-bildunterdrückung bei anwesenheit einer unbekannten phasenverschiebung

Info

Publication number
ATE551810T1
ATE551810T1 AT08785949T AT08785949T ATE551810T1 AT E551810 T1 ATE551810 T1 AT E551810T1 AT 08785949 T AT08785949 T AT 08785949T AT 08785949 T AT08785949 T AT 08785949T AT E551810 T1 ATE551810 T1 AT E551810T1
Authority
AT
Austria
Prior art keywords
gain imbalance
maximum power
power ratio
imbalance
phase shift
Prior art date
Application number
AT08785949T
Other languages
English (en)
Inventor
Bengt Lindoff
Andres Reial
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE551810T1 publication Critical patent/ATE551810T1/de

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
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • 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)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
AT08785949T 2007-08-02 2008-07-07 Iq-ungleichgewichts-bildunterdrückung bei anwesenheit einer unbekannten phasenverschiebung ATE551810T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95349107P 2007-08-02 2007-08-02
US11/949,481 US7986930B2 (en) 2007-08-02 2007-12-03 IQ imbalance image suppression in presence of unknown phase shift
PCT/EP2008/058767 WO2009016000A2 (en) 2007-08-02 2008-07-07 Iq gain imbalance suppression in presence of unknown phase imbalance

Publications (1)

Publication Number Publication Date
ATE551810T1 true ATE551810T1 (de) 2012-04-15

Family

ID=40149852

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08785949T ATE551810T1 (de) 2007-08-02 2008-07-07 Iq-ungleichgewichts-bildunterdrückung bei anwesenheit einer unbekannten phasenverschiebung

Country Status (5)

Country Link
US (1) US7986930B2 (de)
EP (1) EP2181533B1 (de)
JP (1) JP2010535441A (de)
AT (1) ATE551810T1 (de)
WO (1) WO2009016000A2 (de)

Families Citing this family (10)

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US7822399B2 (en) 2007-05-11 2010-10-26 Telefonaktiebolaget Lm Ericsson (Publ) Image compensation for wireless receiver
US8428183B2 (en) * 2011-04-01 2013-04-23 Opnext Subsystems, Inc. In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters
US8644420B2 (en) * 2011-04-01 2014-02-04 Opnext Subsystems, Inc. Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters
US9020019B2 (en) 2012-02-24 2015-04-28 National Instruments Corporation Computing I/Q impairments at system output based on I/Q impairments at system input
US8638893B2 (en) 2012-02-24 2014-01-28 National Instruments Corporation Mechanisms for the correction of I/Q impairments
US8442150B1 (en) 2012-02-24 2013-05-14 National Instruments Corporation Measurement of transmitter impairments using offset local oscillators
JP2015154154A (ja) * 2014-02-12 2015-08-24 国立大学法人東京工業大学 相補Ｇｏｌａｙ符号を用いた直交変復調方法及び装置
GB2537800B (en) * 2014-12-22 2018-05-30 Imagination Tech Ltd IQ imbalance estimator
KR102055192B1 (ko) * 2017-08-25 2019-12-12 한밭대학교 산학협력단 직접 변환 송신기의 i/q 불균형 보상 장치 및 방법
CN114143159B (zh) * 2021-12-08 2022-06-07 北京力通通信有限公司 接收机跟踪iq失衡校正方法及装置

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US7177372B2 (en) 2000-12-21 2007-02-13 Jian Gu Method and apparatus to remove effects of I-Q imbalances of quadrature modulators and demodulators in a multi-carrier system
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KR20070068821A (ko) * 2005-12-27 2007-07-02 삼성전자주식회사 직교주파수 분할 다중화 수신기에서 초기 반송파 주파수오프셋의 추정 장치 및 방법

Also Published As

Publication number Publication date
US20090036079A1 (en) 2009-02-05
EP2181533A2 (de) 2010-05-05
JP2010535441A (ja) 2010-11-18
WO2009016000A3 (en) 2009-03-26
EP2181533B1 (de) 2012-03-28
WO2009016000A2 (en) 2009-02-05
US7986930B2 (en) 2011-07-26

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