CA2678592C - Quadrature modulation rotating training sequence - Google Patents

Quadrature modulation rotating training sequence Download PDF

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Publication number
CA2678592C
CA2678592C CA2678592A CA2678592A CA2678592C CA 2678592 C CA2678592 C CA 2678592C CA 2678592 A CA2678592 A CA 2678592A CA 2678592 A CA2678592 A CA 2678592A CA 2678592 C CA2678592 C CA 2678592C
Authority
CA
Canada
Prior art keywords
training
complex value
training sequence
quadrature
modulation path
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
CA2678592A
Other languages
English (en)
French (fr)
Other versions
CA2678592A1 (en
Inventor
Rabih Chrabieh
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.)
Qualcomm Inc
Original Assignee
Qualcomm 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
Priority claimed from US11/684,566 external-priority patent/US8428175B2/en
Priority claimed from US11/755,719 external-priority patent/US8290083B2/en
Priority claimed from US11/853,809 external-priority patent/US8081695B2/en
Priority claimed from US11/853,808 external-priority patent/US8064550B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CA2678592A1 publication Critical patent/CA2678592A1/en
Application granted granted Critical
Publication of CA2678592C publication Critical patent/CA2678592C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • 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
    • H04L25/05—Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate
    • 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
    • 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
CA2678592A 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence Expired - Fee Related CA2678592C (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US11/684,566 2007-03-09
US11/684,566 US8428175B2 (en) 2007-03-09 2007-03-09 Quadrature modulation rotating training sequence
US11/755,719 US8290083B2 (en) 2007-03-09 2007-05-30 Quadrature imbalance mitigation using unbiased training sequences
US11/755,719 2007-05-30
US11/853,808 2007-09-11
US11/853,809 US8081695B2 (en) 2007-03-09 2007-09-11 Channel estimation using frequency smoothing
US11/853,808 US8064550B2 (en) 2007-03-09 2007-09-11 Quadrature imbalance estimation using unbiased training sequences
US11/853,809 2007-09-11
PCT/US2008/056321 WO2008112585A2 (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence

Publications (2)

Publication Number Publication Date
CA2678592A1 CA2678592A1 (en) 2008-09-18
CA2678592C true CA2678592C (en) 2013-06-18

Family

ID=39760329

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2790073A Expired - Fee Related CA2790073C (en) 2007-03-09 2008-03-07 Quadrature imbalance mitigation using unbiased training sequences
CA2678592A Expired - Fee Related CA2678592C (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence
CA2678126A Expired - Fee Related CA2678126C (en) 2007-03-09 2008-03-07 Quadrature imbalance mitigation using unbiased training sequences

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2790073A Expired - Fee Related CA2790073C (en) 2007-03-09 2008-03-07 Quadrature imbalance mitigation using unbiased training sequences

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2678126A Expired - Fee Related CA2678126C (en) 2007-03-09 2008-03-07 Quadrature imbalance mitigation using unbiased training sequences

Country Status (7)

Country Link
EP (2) EP2130340A2 (ja)
JP (3) JP5123324B2 (ja)
KR (2) KR101075288B1 (ja)
BR (2) BRPI0808676A2 (ja)
CA (3) CA2790073C (ja)
TW (2) TWI393399B (ja)
WO (2) WO2008112587A2 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8385387B2 (en) * 2010-05-20 2013-02-26 Harris Corporation Time dependent equalization of frequency domain spread orthogonal frequency division multiplexing using decision feedback equalization
GB2492168A (en) 2011-06-24 2012-12-26 Penny & Giles Controls Ltd Inductive position sensor with datum adjustment
IL214096A (en) 2011-07-14 2016-02-29 Gideon Mor A system for detecting meconium in amniotic fluid
US8971465B2 (en) 2012-03-30 2015-03-03 Qualcomm Incorporated Receiver-side estimation of and compensation for signal impairments
US9143365B2 (en) 2013-01-30 2015-09-22 Qualcomm Incorporated Channel estimation using averaging and interpolation
US9781612B2 (en) * 2014-03-31 2017-10-03 Intel IP Corporation Correlation-based self-interference suppression

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JP3055085B2 (ja) * 1994-04-22 2000-06-19 株式会社アドバンテスト デジタル変調解析装置
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JPH11136302A (ja) * 1997-10-29 1999-05-21 Fujitsu Ltd 歪補償回路
JP3166705B2 (ja) * 1998-04-16 2001-05-14 松下電器産業株式会社 無線装置及び送信方法
JP2001016283A (ja) * 1999-07-01 2001-01-19 Fujitsu General Ltd ディジタル無線装置
EP1224781A1 (en) * 1999-10-27 2002-07-24 Nokia Corporation Dc offset correction in a mobile communication system
JP2002252663A (ja) * 2001-02-26 2002-09-06 Fujitsu General Ltd ディジタル無線装置
US6825229B2 (en) * 2002-03-07 2004-11-30 Blanchette Rockefeller Neurosciences Institute Methods for Alzheimer's Disease treatment and cognitive enhancement
US7248625B2 (en) * 2002-09-05 2007-07-24 Silicon Storage Technology, Inc. Compensation of I-Q imbalance in digital transceivers
DE10241676A1 (de) * 2002-09-09 2004-03-18 Infineon Technologies Ag Präambel zur Schätzung und Entzerrung von Unsymmetrien zwischen Inphase- und Quadraturzweig in Mehrträger-Übertragungssystemen
US7529306B2 (en) * 2002-09-09 2009-05-05 Infineon Technologies Ag Estimation of asymmetries between inphase and quadrature branches in multicarrier transmission systems
TWI222279B (en) * 2002-11-20 2004-10-11 Realtek Semiconductor Corp Estimation/compensation method and device for in-phase/quadrature-phase unbalance
US7385617B2 (en) * 2003-05-07 2008-06-10 Illinois Institute Of Technology Methods for multi-user broadband wireless channel estimation
US7555051B2 (en) * 2003-05-30 2009-06-30 Nxp B.V. Method and device for estimating IQ imbalance
JP4141973B2 (ja) * 2004-03-03 2008-08-27 日本電信電話株式会社 直交変調器および直交復調器の誤差補償装置
US7477683B2 (en) * 2004-03-29 2009-01-13 Stmicroelectronics Ltd. Periodic DMT signals with cyclic extension
US20050281239A1 (en) * 2004-06-22 2005-12-22 Texas Instruments Incorporated System and method for signaling modes
JP4312705B2 (ja) * 2004-12-27 2009-08-12 日本電信電話株式会社 直交復調誤差補償方法および直交復調誤差補償回路
JP4599192B2 (ja) * 2005-03-02 2010-12-15 株式会社日立製作所 無線データ通信システム、および、無線データ通信方法
TR201819537T4 (tr) * 2005-08-05 2019-01-21 Panasonic Corp Modüle Edilmiş Verileri İletme Ve Alma Sistemi
US7551648B2 (en) * 2005-08-22 2009-06-23 Nec Laboratories America, Inc. Superimposed training for multiple antenna communications
JP4702883B2 (ja) * 2005-08-23 2011-06-15 国立大学法人東京工業大学 送信装置、受信装置、ｍｉｍｏ−ｏｆｄｍ通信システム及びｍｉｍｏ−ｏｆｄｍ通信システムにおけるｉｑインバランス補償方法
JP2007142674A (ja) * 2005-11-16 2007-06-07 Matsushita Electric Ind Co Ltd マルチキャリア送信装置、マルチキャリア受信装置及び通信方法
JP4406398B2 (ja) * 2005-12-26 2010-01-27 株式会社東芝 Ｏｆｄｍ信号の送信方法と送信装置及びｏｆｄｍ信号の受信装置
JP4550746B2 (ja) * 2006-02-01 2010-09-22 株式会社東芝 Ｏｆｄｍを用いた無線通信方法、ｏｆｄｍ送信装置及びｏｆｄｍ受信装置
JP4983365B2 (ja) * 2006-05-16 2012-07-25 ソニー株式会社 無線通信装置
JP4213734B2 (ja) * 2006-07-05 2009-01-21 株式会社東芝 Ｏｆｄｍを用いた無線通信方法及びｏｆｄｍ受信装置
US8064550B2 (en) 2007-03-09 2011-11-22 Qualcomm, Incorporated Quadrature imbalance estimation using unbiased training sequences
WO2008112588A1 (en) * 2007-03-09 2008-09-18 Qualcomm Incorporated Quadrature imbalance estimation using unbiased training sequences

Also Published As

Publication number Publication date
KR20090118114A (ko) 2009-11-17
CA2678126C (en) 2013-06-25
WO2008112585A3 (en) 2009-02-05
TW200901692A (en) 2009-01-01
EP2130340A2 (en) 2009-12-09
BRPI0808669A2 (pt) 2014-08-26
EP2130341A2 (en) 2009-12-09
JP5123324B2 (ja) 2013-01-23
KR101075288B1 (ko) 2011-10-19
JP5726939B2 (ja) 2015-06-03
JP2010521124A (ja) 2010-06-17
WO2008112585A2 (en) 2008-09-18
CA2678592A1 (en) 2008-09-18
CA2790073A1 (en) 2008-09-18
KR101109797B1 (ko) 2012-04-06
TWI446758B (zh) 2014-07-21
KR20090119002A (ko) 2009-11-18
WO2008112587A3 (en) 2009-02-05
WO2008112587A2 (en) 2008-09-18
CA2790073C (en) 2016-01-12
JP2010521123A (ja) 2010-06-17
TW200904093A (en) 2009-01-16
JP5290209B2 (ja) 2013-09-18
BRPI0808676A2 (pt) 2014-08-12
CA2678126A1 (en) 2008-09-18
TWI393399B (zh) 2013-04-11
JP2013176085A (ja) 2013-09-05

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Effective date: 20180307