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WO2008112585A3 - Quadrature modulation rotating training sequence - Google Patents

Quadrature modulation rotating training sequence Download PDF

Info

Publication number
WO2008112585A3
WO2008112585A3 PCT/US2008/056321 US2008056321W WO2008112585A3 WO 2008112585 A3 WO2008112585 A3 WO 2008112585A3 US 2008056321 W US2008056321 W US 2008056321W WO 2008112585 A3 WO2008112585 A3 WO 2008112585A3
Authority
WO
WIPO (PCT)
Prior art keywords
modulation path
training
training information
training sequence
information sent
Prior art date
Application number
PCT/US2008/056321
Other languages
French (fr)
Other versions
WO2008112585A2 (en
Inventor
Rabih Chrabieh
Original Assignee
Qualcomm Inc
Rabih Chrabieh
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 US11/853,808 external-priority patent/US8064550B2/en
Priority claimed from US11/853,809 external-priority patent/US8081695B2/en
Application filed by Qualcomm Inc, Rabih Chrabieh filed Critical Qualcomm Inc
Priority to EP08731751A priority Critical patent/EP2130340A2/en
Priority to CN200880007572.5A priority patent/CN101627598B/en
Priority to BRPI0808669-9A priority patent/BRPI0808669A2/en
Priority to CA2678592A priority patent/CA2678592C/en
Priority to JP2009553706A priority patent/JP5290209B2/en
Publication of WO2008112585A2 publication Critical patent/WO2008112585A2/en
Publication of WO2008112585A3 publication Critical patent/WO2008112585A3/en

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)

Abstract

A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase (e.g., 0 degrees or 180 degrees). Then, the training information sent via the Q modulation path would include a second symbol having a phase that is ± 90 from the reference phase.
PCT/US2008/056321 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence WO2008112585A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP08731751A EP2130340A2 (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence
CN200880007572.5A CN101627598B (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence
BRPI0808669-9A BRPI0808669A2 (en) 2007-03-09 2008-03-07 ROTATING MODULATION ROTATING TRAINING SEQUENCE
CA2678592A CA2678592C (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence
JP2009553706A JP5290209B2 (en) 2007-03-09 2008-03-07 Quadrature modulation rotation training sequence

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US11/684,566 US8428175B2 (en) 2007-03-09 2007-03-09 Quadrature modulation rotating training sequence
US11/684,566 2007-03-09
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
US11/853,808 2007-09-11
US11/853,808 US8064550B2 (en) 2007-03-09 2007-09-11 Quadrature imbalance estimation using unbiased training sequences
US11/853,809 US8081695B2 (en) 2007-03-09 2007-09-11 Channel estimation using frequency smoothing

Publications (2)

Publication Number Publication Date
WO2008112585A2 WO2008112585A2 (en) 2008-09-18
WO2008112585A3 true WO2008112585A3 (en) 2009-02-05

Family

ID=39760329

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2008/056321 WO2008112585A2 (en) 2007-03-09 2008-03-07 Quadrature modulation rotating training sequence
PCT/US2008/056327 WO2008112587A2 (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
PCT/US2008/056327 WO2008112587A2 (en) 2007-03-09 2008-03-07 Quadrature imbalance mitigation using unbiased training sequences

Country Status (7)

Country Link
EP (2) EP2130340A2 (en)
JP (3) JP5123324B2 (en)
KR (2) KR101109797B1 (en)
BR (2) BRPI0808669A2 (en)
CA (3) CA2678126C (en)
TW (2) TWI446758B (en)
WO (2) WO2008112585A2 (en)

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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 System for detection of 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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WO2001031867A1 (en) * 1999-10-27 2001-05-03 Nokia Corporation Dc offset correction in a mobile communication system
US20040203472A1 (en) * 2002-09-05 2004-10-14 G-Plus, Inc. Compensation of I-Q imbalance in digital transceivers
WO2005094028A1 (en) * 2004-03-29 2005-10-06 Stmicroelectronics Ltd. Periodic training signals
US20050281239A1 (en) * 2004-06-22 2005-12-22 Texas Instruments Incorporated System and method for signaling modes

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JP2006526348A (en) * 2003-05-30 2006-11-16 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Method and apparatus for estimating IQ imbalance
JP4141973B2 (en) * 2004-03-03 2008-08-27 日本電信電話株式会社 Error compensator for quadrature modulator and demodulator
JP4312705B2 (en) * 2004-12-27 2009-08-12 日本電信電話株式会社 Quadrature demodulation error compensation method and quadrature demodulation error compensation circuit
JP4599192B2 (en) * 2005-03-02 2010-12-15 株式会社日立製作所 Wireless data communication system and wireless data communication method
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US20040203472A1 (en) * 2002-09-05 2004-10-14 G-Plus, Inc. Compensation of I-Q imbalance in digital transceivers
WO2005094028A1 (en) * 2004-03-29 2005-10-06 Stmicroelectronics Ltd. Periodic training signals
US20050281239A1 (en) * 2004-06-22 2005-12-22 Texas Instruments Incorporated System and method for signaling modes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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LIU H ET AL: "Frequency Offset and I/Q Imbalance Compensation for Direct-Conversion Receivers", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 4, no. 2, March 2005 (2005-03-01), pages 673 - 680, XP011129220, ISSN: 1536-1276 *

Also Published As

Publication number Publication date
CA2678592A1 (en) 2008-09-18
JP2010521123A (en) 2010-06-17
WO2008112585A2 (en) 2008-09-18
KR20090119002A (en) 2009-11-18
BRPI0808676A2 (en) 2014-08-12
TWI393399B (en) 2013-04-11
WO2008112587A3 (en) 2009-02-05
BRPI0808669A2 (en) 2014-08-26
CA2790073A1 (en) 2008-09-18
KR20090118114A (en) 2009-11-17
JP5726939B2 (en) 2015-06-03
TW200901692A (en) 2009-01-01
CA2678126A1 (en) 2008-09-18
EP2130340A2 (en) 2009-12-09
TW200904093A (en) 2009-01-16
CA2678126C (en) 2013-06-25
CA2790073C (en) 2016-01-12
KR101075288B1 (en) 2011-10-19
JP5290209B2 (en) 2013-09-18
TWI446758B (en) 2014-07-21
JP2013176085A (en) 2013-09-05
WO2008112587A2 (en) 2008-09-18
JP2010521124A (en) 2010-06-17
EP2130341A2 (en) 2009-12-09
CA2678592C (en) 2013-06-18
KR101109797B1 (en) 2012-04-06
JP5123324B2 (en) 2013-01-23

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