KR101075288B1 - 직교 변조 회전 트레이닝 시퀀스 - Google Patents

직교 변조 회전 트레이닝 시퀀스 Download PDF

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Publication number
KR101075288B1
KR101075288B1 KR1020097021104A KR20097021104A KR101075288B1 KR 101075288 B1 KR101075288 B1 KR 101075288B1 KR 1020097021104 A KR1020097021104 A KR 1020097021104A KR 20097021104 A KR20097021104 A KR 20097021104A KR 101075288 B1 KR101075288 B1 KR 101075288B1
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KR
South Korea
Prior art keywords
training
modulation path
transmitting
signal
modulation
Prior art date
Application number
KR1020097021104A
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English (en)
Korean (ko)
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KR20090119002A (ko
Inventor
라비 크라비에
Original Assignee
콸콤 인코포레이티드
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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 콸콤 인코포레이티드 filed Critical 콸콤 인코포레이티드
Publication of KR20090119002A publication Critical patent/KR20090119002A/ko
Application granted granted Critical
Publication of KR101075288B1 publication Critical patent/KR101075288B1/ko

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    • 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

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  • 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)
KR1020097021104A 2007-03-09 2008-03-07 직교 변조 회전 트레이닝 시퀀스 KR101075288B1 (ko)

Applications Claiming Priority (8)

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 2007-05-30
US11/755,719 US8290083B2 (en) 2007-03-09 2007-05-30 Quadrature imbalance mitigation using unbiased training sequences
US11/853,809 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
US11/853,808 2007-09-11

Publications (2)

Publication Number Publication Date
KR20090119002A KR20090119002A (ko) 2009-11-18
KR101075288B1 true KR101075288B1 (ko) 2011-10-19

Family

ID=39760329

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1020097021111A KR101109797B1 (ko) 2007-03-09 2008-03-07 비편향 트레이닝 시퀀스들을 사용한 직교 불균형 완화
KR1020097021104A KR101075288B1 (ko) 2007-03-09 2008-03-07 직교 변조 회전 트레이닝 시퀀스

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR1020097021111A KR101109797B1 (ko) 2007-03-09 2008-03-07 비편향 트레이닝 시퀀스들을 사용한 직교 불균형 완화

Country Status (7)

Country Link
EP (2) EP2130341A2 (ja)
JP (3) JP5290209B2 (ja)
KR (2) KR101109797B1 (ja)
BR (2) BRPI0808676A2 (ja)
CA (3) CA2678592C (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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080219386A1 (en) 2007-03-09 2008-09-11 Qualcomm Incorporated Quadrature imbalance estimation using unbiased training sequences

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3682853B2 (ja) * 1995-09-25 2005-08-17 日本ビクター株式会社 直交周波数分割多重信号伝送方式、送信装置及び受信装置
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
US7529306B2 (en) * 2002-09-09 2009-05-05 Infineon Technologies Ag Estimation of asymmetries between inphase and quadrature branches in multicarrier transmission systems
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
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
WO2007018155A1 (ja) * 2005-08-05 2007-02-15 Matsushita Electric Industrial Co., Ltd. 無線通信装置および無線通信方法
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
EP2135412A2 (en) * 2007-03-09 2009-12-23 Qualcomm Incorporated Channel estimation using frequency smoothing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080219386A1 (en) 2007-03-09 2008-09-11 Qualcomm Incorporated Quadrature imbalance estimation using unbiased training sequences

Also Published As

Publication number Publication date
CA2678592A1 (en) 2008-09-18
WO2008112587A2 (en) 2008-09-18
CA2790073A1 (en) 2008-09-18
KR20090119002A (ko) 2009-11-18
JP2010521124A (ja) 2010-06-17
TWI446758B (zh) 2014-07-21
JP5123324B2 (ja) 2013-01-23
JP2013176085A (ja) 2013-09-05
JP5726939B2 (ja) 2015-06-03
KR20090118114A (ko) 2009-11-17
WO2008112585A2 (en) 2008-09-18
CA2790073C (en) 2016-01-12
EP2130340A2 (en) 2009-12-09
BRPI0808669A2 (pt) 2014-08-26
WO2008112587A3 (en) 2009-02-05
WO2008112585A3 (en) 2009-02-05
CA2678126C (en) 2013-06-25
TWI393399B (zh) 2013-04-11
KR101109797B1 (ko) 2012-04-06
CA2678592C (en) 2013-06-18
JP5290209B2 (ja) 2013-09-18
TW200904093A (en) 2009-01-16
BRPI0808676A2 (pt) 2014-08-12
TW200901692A (en) 2009-01-01
CA2678126A1 (en) 2008-09-18
JP2010521123A (ja) 2010-06-17
EP2130341A2 (en) 2009-12-09

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