WO2007097776A3 - Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals - Google Patents

Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals Download PDF

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Publication number
WO2007097776A3
WO2007097776A3 PCT/US2006/029825 US2006029825W WO2007097776A3 WO 2007097776 A3 WO2007097776 A3 WO 2007097776A3 US 2006029825 W US2006029825 W US 2006029825W WO 2007097776 A3 WO2007097776 A3 WO 2007097776A3
Authority
WO
WIPO (PCT)
Prior art keywords
serial
timing correction
simplified timing
spread signals
shaped spread
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.)
Ceased
Application number
PCT/US2006/029825
Other languages
French (fr)
Other versions
WO2007097776A2 (en
Inventor
Donald John Rasmussen
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.)
ITT Manufacturing Enterprises LLC
Original Assignee
ITT Manufacturing Enterprises LLC
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 ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Priority to EP06849805A priority Critical patent/EP1913706B1/en
Priority to AU2006338594A priority patent/AU2006338594B2/en
Priority to DE602006010086T priority patent/DE602006010086D1/en
Priority to AT06849805T priority patent/ATE447264T1/en
Publication of WO2007097776A2 publication Critical patent/WO2007097776A2/en
Publication of WO2007097776A3 publication Critical patent/WO2007097776A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Simplified timing correction method and device are provided for data despreading of serial offset quadrature pulse-shaped spread signals. The simplified timing correction algorithm is applied to a rake receiver for improved performance in a multi-path channel. Serial formatting of the spreading modulation waveform is selected to reduce the SYNC/serial probe correlation complexity. The method includes the steps of : (a) decimating serial inphase (I) and quadrature (Q) signals to form decimated I and Q even samples and decimated I and Q odd samples; (b) obtaining an autocorrelation profile of a spreading sequence used by the receiver; (c) detecting a synchronization starting point using the I and Q even samples; and (d) deciding to either move, or not move, the synchronization starting point, based on the autocorrelation profile obtained in step (b). The method is applicable to QBL-MSK by serial formatting the information to be transmitted.
PCT/US2006/029825 2005-07-28 2006-07-28 Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals Ceased WO2007097776A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06849805A EP1913706B1 (en) 2005-07-28 2006-07-28 Timing correction for data despreading of serial offset quadrature pulse-shaped spread signals
AU2006338594A AU2006338594B2 (en) 2005-07-28 2006-07-28 Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals
DE602006010086T DE602006010086D1 (en) 2005-07-28 2006-07-28 Timing correction for data despreading of serial pulse-shaped extruded offset quadrature signals
AT06849805T ATE447264T1 (en) 2005-07-28 2006-07-28 TIMING CORRECTION FOR DATA SPREADING OF SERIAL PULSE SHAPED SPREAD OFFSET SQUARE SIGNALS

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US70337305P 2005-07-28 2005-07-28
US60/703,373 2005-07-28
US11/313,476 US7609755B2 (en) 2005-07-28 2005-12-21 Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals
US11/313,476 2005-12-21

Publications (2)

Publication Number Publication Date
WO2007097776A2 WO2007097776A2 (en) 2007-08-30
WO2007097776A3 true WO2007097776A3 (en) 2007-11-29

Family

ID=38437818

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029825 Ceased WO2007097776A2 (en) 2005-07-28 2006-07-28 Simplified timing correction for data despreading of serial offset quadrature pulse-shaped spread signals

Country Status (6)

Country Link
US (1) US7609755B2 (en)
EP (1) EP1913706B1 (en)
AT (1) ATE447264T1 (en)
AU (1) AU2006338594B2 (en)
DE (1) DE602006010086D1 (en)
WO (1) WO2007097776A2 (en)

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
US7822100B2 (en) 2005-07-28 2010-10-26 Itt Manufacturing Enterprises, Inc. Phase mapping for QPSK/QBL-MSK waveform
US7715505B2 (en) 2005-07-28 2010-05-11 Itt Manufacturing Enterprises, Inc Adaptive synchronization enhancement technique for serial modulated waveforms
US7593454B2 (en) 2005-07-28 2009-09-22 Itt Manufacturing Enterprises, Inc. Enhanced QPSK or DQPSK data demodulation for direct sequence spreading (DSS) system waveforms using orthogonal or near-orthogonal spreading sequences
US7801255B2 (en) 2005-07-28 2010-09-21 Itt Manufacturing Enterprises, Inc. Synchronization technique for serial modulated waveforms
KR100665259B1 (en) * 2005-09-30 2007-01-09 삼성전기주식회사 Symbol Synchronization Estimation Method of OPSP Demodulator
US7917798B2 (en) 2005-10-04 2011-03-29 Hypres, Inc. Superconducting digital phase rotator
JP4837403B2 (en) * 2006-03-08 2011-12-14 ルネサスエレクトロニクス株式会社 Synchronization timing detection device, reception device, and synchronization timing detection method
US20090154611A1 (en) * 2007-08-30 2009-06-18 Rogoza William C Methods and apparatus for low overhead msk decoding
KR100893737B1 (en) * 2007-12-17 2009-04-17 한국전자통신연구원 Receiving apparatus and method in MB-OPDM system for limiting timing synchronization range
JP5716373B2 (en) * 2010-03-23 2015-05-13 セイコーエプソン株式会社 Correlation calculation method, satellite signal acquisition method, correlation calculation circuit, and electronic device
JP2015090277A (en) 2013-11-05 2015-05-11 セイコーエプソン株式会社 Satellite signal receiver
JP6318565B2 (en) 2013-11-13 2018-05-09 セイコーエプソン株式会社 Semiconductor device and electronic equipment
JP2015108565A (en) 2013-12-05 2015-06-11 セイコーエプソン株式会社 Integrated circuit for receiving satellite signal
US10797920B1 (en) * 2020-03-18 2020-10-06 Rockwell Collins, Inc. High-entropy continuous phase modulation data transmitter

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1117186A1 (en) * 2000-01-14 2001-07-18 Lucent Technologies Inc. Adaptive code-tracking RAKE receiver for direct-sequence code-division multiple access (cdma) communications

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US3938045A (en) 1974-07-03 1976-02-10 Rca Corporation Transmitter for frequency shift keyed modulation
US4057759A (en) 1976-06-23 1977-11-08 Gte Sylvania Incorporated Communication receiving apparatus
US4516087A (en) 1982-04-12 1985-05-07 Rockwell International Corporation Method for reducing side-lobe energy in an MSK detectable signal
US5157693A (en) 1991-04-01 1992-10-20 Motorola, Inc. Digital modulation circuit
US5177765A (en) 1991-06-03 1993-01-05 Spectralink Corporation Direct-sequence spread-spectrum digital signal acquisition and tracking system and method therefor
US5195108A (en) 1991-09-30 1993-03-16 Motorola, Inc. System and method for determining absolute phase of a differentially-encoded, phase-modulated signal
US5732106A (en) 1995-06-05 1998-03-24 Itt Corporation Pulse-shaping filter for modulator monolithic integration
FI102338B1 (en) * 1996-05-21 1998-11-13 Nokia Mobile Phones Ltd Recipient's self-synchronization in idle condition
US5818867A (en) 1996-09-09 1998-10-06 Itt Industries, Inc. QPSK/QBL-MSK waveform enhancement
US6002709A (en) 1996-11-21 1999-12-14 Dsp Group, Inc. Verification of PN synchronization in a direct-sequence spread-spectrum digital communications system
US6249539B1 (en) * 1998-06-15 2001-06-19 Qualcomm Incorporated System and method for narrowing the range of frequency uncertainty of a doppler shifted signal
US6859463B1 (en) 1999-11-08 2005-02-22 Itt Manufacturing Enterprises, Inc. Methods and apparatus for organizing selection of operational parameters in a communication system
US6687316B1 (en) * 2000-01-25 2004-02-03 Rockwell Collins, Inc. High resolution correlator technique for spread spectrum ranging system code and carrier multipath mitigation
CA2347927A1 (en) * 2001-05-16 2002-11-16 Telecommunications Research Laboratories Centralized synchronization for wireless networks
US6674790B1 (en) 2002-01-24 2004-01-06 Meshnetworks, Inc. System and method employing concatenated spreading sequences to provide data modulated spread signals having increased data rates with extended multi-path delay spread

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1117186A1 (en) * 2000-01-14 2001-07-18 Lucent Technologies Inc. Adaptive code-tracking RAKE receiver for direct-sequence code-division multiple access (cdma) communications

Also Published As

Publication number Publication date
US20080101442A1 (en) 2008-05-01
ATE447264T1 (en) 2009-11-15
EP1913706B1 (en) 2009-10-28
DE602006010086D1 (en) 2009-12-10
WO2007097776A2 (en) 2007-08-30
EP1913706A2 (en) 2008-04-23
US7609755B2 (en) 2009-10-27
AU2006338594B2 (en) 2011-07-28
AU2006338594A1 (en) 2007-08-30

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