WO2005062728A3 - Method for constructing frame preamble in ofdm wireless communication system, and method for acquiring frame synchronization and searching cells using preamble - Google Patents

Method for constructing frame preamble in ofdm wireless communication system, and method for acquiring frame synchronization and searching cells using preamble Download PDF

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Publication number
WO2005062728A3
WO2005062728A3 PCT/KR2004/002730 KR2004002730W WO2005062728A3 WO 2005062728 A3 WO2005062728 A3 WO 2005062728A3 KR 2004002730 W KR2004002730 W KR 2004002730W WO 2005062728 A3 WO2005062728 A3 WO 2005062728A3
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WO
WIPO (PCT)
Prior art keywords
preamble
frame
frame synchronization
correlation
wireless communication
Prior art date
Application number
PCT/KR2004/002730
Other languages
French (fr)
Other versions
WO2005062728A2 (en
Inventor
Hyoung-Soo Lim
Choong-Il Yeh
Yu-Ro Lee
Dong-Seung Kwon
Seung-Ku Hwang
Original Assignee
Korea Electronics Telecomm
Samsung Electronics Co Ltd
Kt Corp
Sk Telecom Co Ltd
Kt Freetel Co Ltd
Hanaro Telecom Inc
Hyoung-Soo Lim
Choong-Il Yeh
Yu-Ro Lee
Dong-Seung Kwon
Seung-Ku Hwang
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 Korea Electronics Telecomm, Samsung Electronics Co Ltd, Kt Corp, Sk Telecom Co Ltd, Kt Freetel Co Ltd, Hanaro Telecom Inc, Hyoung-Soo Lim, Choong-Il Yeh, Yu-Ro Lee, Dong-Seung Kwon, Seung-Ku Hwang filed Critical Korea Electronics Telecomm
Priority to US10/584,716 priority Critical patent/US20080043858A1/en
Publication of WO2005062728A2 publication Critical patent/WO2005062728A2/en
Publication of WO2005062728A3 publication Critical patent/WO2005062728A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • 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
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe 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
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols

Abstract

Disclosed are a method for constructing a frame preamble in an OFDM wireless communication system, and a method for acquiring frame synchronization and searching cells using the preamble. The preamble is arranged at the beginning of a frame and constructed of a pattern repeated an integer number of times, and a CP. The pattern has a length shorter than a single OFDM symbol interval. The length of the repetitive pattern is not limited to an integer number of times a single OFDM symbol interval. Frame synchronization can be acquired by observing cross-correlation of a received signal and reference patterns and detecting the moment when the absolute value of the cross-correlation exceeds a predetermined threshold. Otherwise, frame synchronization can be acquired by observing auto-correlation of the received signal using repeated patterns included in the received signal and detecting the moment when the absolute value of the auto-correlation becomes the maximum value.
PCT/KR2004/002730 2003-12-26 2004-10-27 Method for constructing frame preamble in ofdm wireless communication system, and method for acquiring frame synchronization and searching cells using preamble WO2005062728A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/584,716 US20080043858A1 (en) 2003-12-26 2004-10-27 Method for Constructing Frame Preamble in Ofdm Wireless Communication System, and Method for Acquiring Frame Synchronization and Searching Cells Using Preamble

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0097867 2003-12-26
KR1020030097867A KR20050066562A (en) 2003-12-26 2003-12-26 Method for embodying frame preamble in wireless communication based on ofdm, and method for acquiring frame synchronization and searching cells using the preamble

Publications (2)

Publication Number Publication Date
WO2005062728A2 WO2005062728A2 (en) 2005-07-14
WO2005062728A3 true WO2005062728A3 (en) 2006-08-31

Family

ID=34737901

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/002730 WO2005062728A2 (en) 2003-12-26 2004-10-27 Method for constructing frame preamble in ofdm wireless communication system, and method for acquiring frame synchronization and searching cells using preamble

Country Status (3)

Country Link
US (1) US20080043858A1 (en)
KR (1) KR20050066562A (en)
WO (1) WO2005062728A2 (en)

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US20080043858A1 (en) 2008-02-21
WO2005062728A2 (en) 2005-07-14

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