WO2002073870A3 - Method of symbol timing synchronization in communication systems - Google Patents

Method of symbol timing synchronization in communication systems Download PDF

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Publication number
WO2002073870A3
WO2002073870A3 PCT/US2002/006265 US0206265W WO02073870A3 WO 2002073870 A3 WO2002073870 A3 WO 2002073870A3 US 0206265 W US0206265 W US 0206265W WO 02073870 A3 WO02073870 A3 WO 02073870A3
Authority
WO
WIPO (PCT)
Prior art keywords
symbol timing
transmitter
timing
receiver
wireless terminal
Prior art date
Application number
PCT/US2002/006265
Other languages
French (fr)
Other versions
WO2002073870A2 (en
Inventor
Rajiv Laroia
Junyi Li
Vladimir Parizhsky
Original Assignee
Flarion Technologies Inc
Rajiv Laroia
Junyi Li
Vladimir Parizhsky
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23050067&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2002073870(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Flarion Technologies Inc, Rajiv Laroia, Junyi Li, Vladimir Parizhsky filed Critical Flarion Technologies Inc
Priority to KR1020037011783A priority Critical patent/KR100866781B1/en
Priority to AU2002240566A priority patent/AU2002240566A1/en
Priority to DE60216055T priority patent/DE60216055T3/en
Priority to EP02706481A priority patent/EP1366591B2/en
Priority to JP2002571627A priority patent/JP4202144B2/en
Publication of WO2002073870A2 publication Critical patent/WO2002073870A2/en
Publication of WO2002073870A3 publication Critical patent/WO2002073870A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/208—Frequency-division multiple access [FDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • 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
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Symbol timing synchronization in OFDM communication systems where multiple wireless terminals communicate with a single base station is described. Base station transmitter and receiver symbol timing is fixed. Each wireless terminal operates to independently adjust its transmitter timing. Transmitter timing synchronization at the wireless terminal is slaved to the terminal's receiver timing synchronization. each wireless terminal first corrects its receiver symbol timing based on a signal received from the base station. The wireless terminal then adjusts its transmitter symbol timing as a function of its receiver symbol timing. When the receiver symbol timing is to be advanced or delayed by some amount, the transmitter symbol timing is also advanced or delayed, respectively, by the same, or substantially the same, amount. Symbol timing adjustment can be made by adding or deleting digital samples from the first or last symbol in a dwell.
PCT/US2002/006265 2001-03-09 2002-03-04 Method of symbol timing synchronization in communication systems WO2002073870A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020037011783A KR100866781B1 (en) 2001-03-09 2002-03-04 Method of symbol timing synchronization in communication systems
AU2002240566A AU2002240566A1 (en) 2001-03-09 2002-03-04 Method of symbol timing synchronization in communication systems
DE60216055T DE60216055T3 (en) 2001-03-09 2002-03-04 METHOD FOR SYMBOL ACTUATION SYNCHRONIZATION IN COMMUNICATION SYSTEMS
EP02706481A EP1366591B2 (en) 2001-03-09 2002-03-04 Method of symbol timing synchronization in communication systems
JP2002571627A JP4202144B2 (en) 2001-03-09 2002-03-04 Symbol timing synchronization method in communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27489701P 2001-03-09 2001-03-09
US60/274,897 2001-03-09

Publications (2)

Publication Number Publication Date
WO2002073870A2 WO2002073870A2 (en) 2002-09-19
WO2002073870A3 true WO2002073870A3 (en) 2003-07-03

Family

ID=23050067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/006265 WO2002073870A2 (en) 2001-03-09 2002-03-04 Method of symbol timing synchronization in communication systems

Country Status (12)

Country Link
US (2) US7751448B2 (en)
EP (2) EP1366591B2 (en)
JP (1) JP4202144B2 (en)
KR (1) KR100866781B1 (en)
CN (1) CN100409608C (en)
AT (2) ATE345618T1 (en)
AU (1) AU2002240566A1 (en)
DE (2) DE60216055T3 (en)
ES (2) ES2275841T5 (en)
HK (1) HK1107200A1 (en)
TW (1) TW577202B (en)
WO (1) WO2002073870A2 (en)

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JP5031600B2 (en) * 2008-01-28 2012-09-19 京セラ株式会社 Wireless communication method, wireless communication system, base station, mobile station
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Also Published As

Publication number Publication date
US7751448B2 (en) 2010-07-06
DE60236220D1 (en) 2010-06-10
CN1504024A (en) 2004-06-09
ATE466427T1 (en) 2010-05-15
AU2002240566A1 (en) 2002-09-24
EP1755256A1 (en) 2007-02-21
EP1755256B1 (en) 2010-04-28
EP1366591A2 (en) 2003-12-03
EP1366591B1 (en) 2006-11-15
ATE345618T1 (en) 2006-12-15
DE60216055T2 (en) 2007-06-21
US20070140395A1 (en) 2007-06-21
KR20030080253A (en) 2003-10-11
HK1107200A1 (en) 2008-03-28
JP4202144B2 (en) 2008-12-24
DE60216055T3 (en) 2010-10-28
DE60216055D1 (en) 2006-12-28
US20020126706A1 (en) 2002-09-12
JP2005506720A (en) 2005-03-03
ES2341876T3 (en) 2010-06-29
EP1366591B2 (en) 2010-04-21
WO2002073870A2 (en) 2002-09-19
US7881345B2 (en) 2011-02-01
ES2275841T3 (en) 2007-06-16
ES2275841T5 (en) 2010-07-12
CN100409608C (en) 2008-08-06
KR100866781B1 (en) 2008-11-04
TW577202B (en) 2004-02-21

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