WO2000049720A3 - Method for synchronization in a spread spectrum receiver - Google Patents

Method for synchronization in a spread spectrum receiver Download PDF

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Publication number
WO2000049720A3
WO2000049720A3 PCT/FI2000/000119 FI0000119W WO0049720A3 WO 2000049720 A3 WO2000049720 A3 WO 2000049720A3 FI 0000119 W FI0000119 W FI 0000119W WO 0049720 A3 WO0049720 A3 WO 0049720A3
Authority
WO
WIPO (PCT)
Prior art keywords
spread spectrum
differential
synchronization
matrix
systems
Prior art date
Application number
PCT/FI2000/000119
Other languages
French (fr)
Other versions
WO2000049720A2 (en
Inventor
Tapani Ristaniemi
Jyrki Joutsensalo
Original Assignee
Jyvaeskylaen Teknologiakeskus
Tapani Ristaniemi
Jyrki Joutsensalo
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 Jyvaeskylaen Teknologiakeskus, Tapani Ristaniemi, Jyrki Joutsensalo filed Critical Jyvaeskylaen Teknologiakeskus
Priority to AU26749/00A priority Critical patent/AU2674900A/en
Publication of WO2000049720A2 publication Critical patent/WO2000049720A2/en
Publication of WO2000049720A3 publication Critical patent/WO2000049720A3/en

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Classifications

    • 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

Abstract

The method relates to synchronization methods for spread spectrum receivers, used for code acquisition in CDMA-systems. The invention provides improved synchronization methods based on the use of differential correlation. The differential correlation matrix, obtained by delaying the signal by n symbols, consists only the information of the desired user, while uncorrelating inteferers and noise are suppressed out. Delay estimats are obtained by differentially coherent eigenanalysis of the differential correlatin matrix from the MUSIC type approach. The synchonization methods may also be used in GPS, Global Positioning System, mobile stations of cellular telecommunication systems and terminals of wireless data communication networks.
PCT/FI2000/000119 1999-02-16 2000-02-16 Method for synchronization in a spread spectrum receiver WO2000049720A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26749/00A AU2674900A (en) 1999-02-16 2000-02-16 Method for synchronization in a spread spectrum receiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990316A FI990316A0 (en) 1999-02-16 1999-02-16 Synchronization by correlation method in a spectrum spectrum system
FI990316 1999-02-16

Publications (2)

Publication Number Publication Date
WO2000049720A2 WO2000049720A2 (en) 2000-08-24
WO2000049720A3 true WO2000049720A3 (en) 2001-01-04

Family

ID=8553794

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000119 WO2000049720A2 (en) 1999-02-16 2000-02-16 Method for synchronization in a spread spectrum receiver

Country Status (3)

Country Link
AU (1) AU2674900A (en)
FI (1) FI990316A0 (en)
WO (1) WO2000049720A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941221B (en) * 2014-03-12 2016-06-08 西安电子科技大学 Space stretching Electromagnetic Vector Sensor Array method for parameter estimation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7177344B2 (en) 2001-03-14 2007-02-13 Mercury Computer Systems, Inc. Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving implicit waveform subtraction
EP1545019A1 (en) * 2003-12-19 2005-06-22 Telefonaktiebolaget LM Ericsson (publ) GPS receiver using differential correlation
CN103941222B (en) * 2014-03-12 2016-02-03 西安电子科技大学 Based on the method for parameter estimation of Rayleigh entropy dimensionality reduction MUSIC algorithm
TW201931813A (en) * 2018-01-09 2019-08-01 財團法人資訊工業策進會 Wireless communication device and time and frequency synchronization method and non-transitory computer readable medium of the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5260968A (en) * 1992-06-23 1993-11-09 The Regents Of The University Of California Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering
US5629883A (en) * 1993-09-29 1997-05-13 Kabushiki Kaisha Kenwood Correlation detector
US6078607A (en) * 1998-08-10 2000-06-20 Omnipont Corporation Synchronization codes for use in communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5260968A (en) * 1992-06-23 1993-11-09 The Regents Of The University Of California Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering
US5629883A (en) * 1993-09-29 1997-05-13 Kabushiki Kaisha Kenwood Correlation detector
US6078607A (en) * 1998-08-10 2000-06-20 Omnipont Corporation Synchronization codes for use in communication

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BENSLEY ET AL.: "Subspace-based channel estimation for code division multiple access communication systems", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 44, no. 8, August 1996 (1996-08-01), pages 1009 - 1020, XP002935515 *
CHUNG C.-D.: "Differentially coherent detection technique for direct-sequence code acquisition in a rayleigh fading mobile channel", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 43, no. 2, February 1995 (1995-02-01) - April 1995 (1995-04-01), pages 1116 - 1126, XP002935516 *
JOUTSENSALO ET AL.: "Delay estimation in CDMA system by differentially coherent eigenanalysis", PROCEEDINGS ICECS'99. THE 6TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, vol. 3, 5 September 1999 (1999-09-05) - 8 September 1999 (1999-09-08), pages 1279 - 1282, XP002935518 *
JOUTSENSALO ET AL.: "Single user synchronization in fading channel", 2ND IEEE WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS; SPAWC'99, 9 May 1999 (1999-05-09) - 12 May 1999 (1999-05-12), pages 133 - 137, XP002935517 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941221B (en) * 2014-03-12 2016-06-08 西安电子科技大学 Space stretching Electromagnetic Vector Sensor Array method for parameter estimation

Also Published As

Publication number Publication date
FI990316A0 (en) 1999-02-16
AU2674900A (en) 2000-09-04
WO2000049720A2 (en) 2000-08-24

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