WO2003034642B1 - Synchronisation in multicarrier cdma systems - Google Patents

Synchronisation in multicarrier cdma systems

Info

Publication number
WO2003034642B1
WO2003034642B1 PCT/CA2002/001542 CA0201542W WO03034642B1 WO 2003034642 B1 WO2003034642 B1 WO 2003034642B1 CA 0201542 W CA0201542 W CA 0201542W WO 03034642 B1 WO03034642 B1 WO 03034642B1
Authority
WO
WIPO (PCT)
Prior art keywords
sub
synchronization
transmitter according
carriers
transmit antennas
Prior art date
Application number
PCT/CA2002/001542
Other languages
French (fr)
Other versions
WO2003034642A2 (en
WO2003034642A3 (en
Inventor
Jianglei Ma
Ming Jia
Peiying Zhu
Wen Tong
Original Assignee
Nortel Networks 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27488569&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003034642(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to JP2003537241A priority Critical patent/JP4276947B2/en
Priority to KR1020097020003A priority patent/KR100986545B1/en
Priority to KR1020137015149A priority patent/KR101361540B1/en
Priority to DE60239213T priority patent/DE60239213D1/en
Priority to CN028249917A priority patent/CN1736052B/en
Priority to EP19160281.2A priority patent/EP3518455A1/en
Priority to KR1020107024291A priority patent/KR101129923B1/en
Application filed by Nortel Networks Ltd filed Critical Nortel Networks Ltd
Priority to KR1020107003705A priority patent/KR101225428B1/en
Priority to EP10161516.9A priority patent/EP2211516B1/en
Priority to KR1020047005738A priority patent/KR100934299B1/en
Priority to EP02767021A priority patent/EP1438799B1/en
Priority to KR1020107029478A priority patent/KR101349623B1/en
Priority to KR1020107024290A priority patent/KR101129968B1/en
Priority to AU2002331503A priority patent/AU2002331503A1/en
Publication of WO2003034642A2 publication Critical patent/WO2003034642A2/en
Publication of WO2003034642A3 publication Critical patent/WO2003034642A3/en
Publication of WO2003034642B1 publication Critical patent/WO2003034642B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • 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
    • 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
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • 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
    • H04L27/2649—Demodulators
    • H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
    • 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
    • H04L27/2663—Coarse synchronisation, e.g. by correlation
    • 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
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • 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
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • 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
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2672—Frequency domain
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • 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
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation

Abstract

A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.

Claims

54
AMENDED CLAIMS
Received by the International Bureau on 12 January 2004 :
Claims 9 to 14 are new.
9. A transmitter according to claim 3 wherein the common synchronization channel is used for course synchronization and fine synchronization and the pilot channel is used for fine synchronization.
5 10. A transmitter according to claim 3 wherein the common synchronization channel is used to transmit a complex sequence which is different for each transmit antenna of one transmitter, but which is common for respective transmit antennas of different transmitters within a communications D network.
11. A transmitter according to claim 5 adapted to transmit OFDM frames beginning with said preamble, and having scattered pilots throughout a remainder of the OFDM symbols in each OFDM frame.
L5 12. A transmitter according to claim 5 wherein during the preamble, for each of N transmit antennas, dedicated pilot channel sub-carriers are transmitted and common synchronization channel sub-carriers are transmitted and broadcasting channel sub-carriers are transmitted.
■3 13. A transmitter according to claim 5 wherein the sub-carriers of the preamble OFDM symbols are organized as a repeating sequence of {dedicated pilot channel for each of N
; transmit antennas, common synchronization channel sub- carrier for each of N transmit antennas} arranged in a
- predetermined order.
14. A transmitter according to claim 5 wherein the sub-carriers of the preamble OFDM symbols are organized as a
; repeating sequence of {at least one dedicated pilot channel sub-carrier for each of N transmit antennas, at least one
3() common synchronization channel sub-carrier for each of N transmit antennas, at least one broadcast channel sub- carrier} arranged in a predetermined order. _
PCT/CA2002/001542 2001-10-17 2002-10-15 Synchronisation in multicarrier cdma systems WO2003034642A2 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
KR1020107003705A KR101225428B1 (en) 2001-10-17 2002-10-15 Method and system for performing synchronization in ofdm systems
EP10161516.9A EP2211516B1 (en) 2001-10-17 2002-10-15 Synchronisation for multicarrier MIMO receivers
KR1020097020003A KR100986545B1 (en) 2001-10-17 2002-10-15 Synchronisation in multicarrier cdma systems
KR1020047005738A KR100934299B1 (en) 2001-10-17 2002-10-15 Synchronization in a Multi-Carrier CDMA System
CN028249917A CN1736052B (en) 2001-10-17 2002-10-15 Synchronization in multicarrier CDMA systems
EP19160281.2A EP3518455A1 (en) 2001-10-17 2002-10-15 Frame structure for ofdm systems
KR1020107024291A KR101129923B1 (en) 2001-10-17 2002-10-15 Method and system for performing synchronization in ofdm systems
JP2003537241A JP4276947B2 (en) 2001-10-17 2002-10-15 Synchronization in multi-carrier CDMA systems
AU2002331503A AU2002331503A1 (en) 2001-10-17 2002-10-15 Synchronisation in multicarrier cdma systems
KR1020137015149A KR101361540B1 (en) 2001-10-17 2002-10-15 Method and system for performing synchronization in ofdm systems
DE60239213T DE60239213D1 (en) 2001-10-17 2002-10-15 Header symbol structure for MIMO-OFDM
EP02767021A EP1438799B1 (en) 2001-10-17 2002-10-15 Header symbol structure for MIMO-OFDM
KR1020107029478A KR101349623B1 (en) 2001-10-17 2002-10-15 Method and system for performing synchronization in ofdm systems
KR1020107024290A KR101129968B1 (en) 2001-10-17 2002-10-15 Method and system for performing synchronization in ofdm systems

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US32951401P 2001-10-17 2001-10-17
US32950701P 2001-10-17 2001-10-17
US32951001P 2001-10-17 2001-10-17
US60/329,507 2001-10-17
US60/329,514 2001-10-17
US60/329,510 2001-10-17
US10/038,915 US7548506B2 (en) 2001-10-17 2002-01-08 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design
US10/038,915 2002-01-08

Publications (3)

Publication Number Publication Date
WO2003034642A2 WO2003034642A2 (en) 2003-04-24
WO2003034642A3 WO2003034642A3 (en) 2004-01-15
WO2003034642B1 true WO2003034642B1 (en) 2004-03-04

Family

ID=27488569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2002/001542 WO2003034642A2 (en) 2001-10-17 2002-10-15 Synchronisation in multicarrier cdma systems

Country Status (8)

Country Link
US (13) US7548506B2 (en)
EP (9) EP2207297A1 (en)
JP (6) JP4276947B2 (en)
KR (12) KR101361540B1 (en)
CN (4) CN1736052B (en)
AU (1) AU2002331503A1 (en)
DE (1) DE60239213D1 (en)
WO (1) WO2003034642A2 (en)

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