WO2008148078A3 - Ofdm-based device and method for performing synchronization in the presence of interference signals - Google Patents

Ofdm-based device and method for performing synchronization in the presence of interference signals Download PDF

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Publication number
WO2008148078A3
WO2008148078A3 PCT/US2008/064839 US2008064839W WO2008148078A3 WO 2008148078 A3 WO2008148078 A3 WO 2008148078A3 US 2008064839 W US2008064839 W US 2008064839W WO 2008148078 A3 WO2008148078 A3 WO 2008148078A3
Authority
WO
WIPO (PCT)
Prior art keywords
ofdm
values
frequency offset
based device
fine frequency
Prior art date
Application number
PCT/US2008/064839
Other languages
French (fr)
Other versions
WO2008148078A2 (en
Inventor
Jingnong Yang
Won-Joon Choi
Original Assignee
Amicus Wireless Technology Ltd.
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 Amicus Wireless Technology Ltd. filed Critical Amicus Wireless Technology Ltd.
Publication of WO2008148078A2 publication Critical patent/WO2008148078A2/en
Publication of WO2008148078A3 publication Critical patent/WO2008148078A3/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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and synchronisation
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/2659—Coarse or integer frequency offset determination and synchronisation

Abstract

An OFDM-based device and method for performing synchronization utilizes a time-domain preamble of an incoming OFDM-based signal to compute an estimated fine frequency offset. The computation of the estimated fine frequency offset involves multiplying values of the time-domain preamble with conjugates of corresponding values of a selected base station time-domain preamble, averaging the resulting multiplied values in predefined segments and self-correlating the resulting averaged values to derive a self-correlation value, which is used to compute the estimated fine frequency offset.
PCT/US2008/064839 2007-05-25 2008-05-27 Ofdm-based device and method for performing synchronization in the presence of interference signals WO2008148078A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93167307P 2007-05-25 2007-05-25
US60/931,673 2007-05-25

Publications (2)

Publication Number Publication Date
WO2008148078A2 WO2008148078A2 (en) 2008-12-04
WO2008148078A3 true WO2008148078A3 (en) 2009-12-30

Family

ID=40072316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/064839 WO2008148078A2 (en) 2007-05-25 2008-05-27 Ofdm-based device and method for performing synchronization in the presence of interference signals

Country Status (3)

Country Link
US (1) US8134911B2 (en)
TW (1) TW200913592A (en)
WO (1) WO2008148078A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100982780B1 (en) 2008-12-05 2010-09-20 경희대학교 산학협력단 Carrier frequency offset estimation using range pointer for ofdm based wlan system
US9762414B2 (en) * 2009-02-04 2017-09-12 Acorn Technologies, Inc. Least squares channel identification for OFDM Systems
US8761274B2 (en) * 2009-02-04 2014-06-24 Acorn Technologies, Inc. Least squares channel identification for OFDM systems
WO2011059068A1 (en) * 2009-11-13 2011-05-19 日本電気株式会社 Frequency offset estimation method and communication device, wireless communication system and program
US8842790B2 (en) * 2009-12-22 2014-09-23 Intel Corporation Methods and systems to synchronize network nodes
CN101764780B (en) * 2009-12-28 2015-04-01 北京中星微电子有限公司 Method and device for time and frequency synchronization in orthogonal frequency division multiplexing
CN102223322B (en) * 2010-04-15 2014-11-05 中兴通讯股份有限公司 Estimation method and apparatus for frequency offset
CN102377705B (en) * 2010-08-20 2016-09-14 英特赛尔美国股份有限公司 Noise and interference elimination method
US8548033B2 (en) 2010-12-23 2013-10-01 Microchip Technology Incorporated Automatic frequency control under low signal-to-noise conditions
CN102315908B (en) * 2011-09-26 2014-01-22 华为技术有限公司 Frequency offset estimation method and base station
US9628095B1 (en) * 2012-09-05 2017-04-18 Altera Corporation Parameterizable method for simulating PLL behavior
WO2017004836A1 (en) * 2015-07-09 2017-01-12 华为技术有限公司 Data detection method and device
US9538537B1 (en) * 2015-08-11 2017-01-03 Phasorlab, Inc. Blind carrier synchronization method for OFDM wireless communication systems
US10171278B2 (en) * 2016-05-12 2019-01-01 Cavium, Llc Methods and apparatus for frequency offset estimation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030058966A1 (en) * 2001-09-24 2003-03-27 Gilbert Jeffrey M. Fine frequency offset estimation and calculation and use to improve communication system performance
US20030152021A1 (en) * 2001-09-24 2003-08-14 Yi-Hsiu Wang Post-fft scaling to reduce multiple effects
US20050078649A1 (en) * 2003-10-08 2005-04-14 Tehrani Ardavan M. Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals
US20060233270A1 (en) * 2005-03-25 2006-10-19 Jae-Young Ahn Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in OFDMA system having smart antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69939310D1 (en) * 1998-12-01 2008-09-25 Samsung Electronics Co Ltd DEVICE FOR FREQUENCY SYNCHRONIZATION OF AN OFDM / CDMA SYSTEM
US7027429B2 (en) * 2001-06-19 2006-04-11 Flarion Technologies, Inc. Method and apparatus for time and frequency synchronization of OFDM communication systems
KR20050040988A (en) * 2003-10-29 2005-05-04 삼성전자주식회사 Communication method for frequency hopping ofdm based cellular system
KR100621432B1 (en) * 2004-04-21 2006-09-08 삼성전자주식회사 Apparatus for channel estimations for mitigating inter-cell interference in multiple transmit and multiple receive antennas-orthogonal frequency division multiplexing cellular system and method thereof
DE602006006160D1 (en) * 2005-02-25 2009-05-20 Koninkl Philips Electronics Nv METHOD AND DEVICE FOR SYNCHRONIZING A WIRELESS RECEIVER
TWI350679B (en) * 2006-04-03 2011-10-11 Realtek Semiconductor Corp Frequency offset correction for an ultrawideband communication system
KR100732382B1 (en) * 2006-04-27 2007-06-27 주식회사 팬택 Apparatus and method of obtaining a preamble in an orthogonal frequency division multiple access mobile terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030058966A1 (en) * 2001-09-24 2003-03-27 Gilbert Jeffrey M. Fine frequency offset estimation and calculation and use to improve communication system performance
US20030152021A1 (en) * 2001-09-24 2003-08-14 Yi-Hsiu Wang Post-fft scaling to reduce multiple effects
US20050078649A1 (en) * 2003-10-08 2005-04-14 Tehrani Ardavan M. Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals
US20060233270A1 (en) * 2005-03-25 2006-10-19 Jae-Young Ahn Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in OFDMA system having smart antenna

Also Published As

Publication number Publication date
US8134911B2 (en) 2012-03-13
WO2008148078A2 (en) 2008-12-04
TW200913592A (en) 2009-03-16
US20080291893A1 (en) 2008-11-27

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