WO2000044120A8 - Synchronization of ofdm signals - Google Patents

Synchronization of ofdm signals

Info

Publication number
WO2000044120A8
WO2000044120A8 PCT/US2000/001399 US0001399W WO0044120A8 WO 2000044120 A8 WO2000044120 A8 WO 2000044120A8 US 0001399 W US0001399 W US 0001399W WO 0044120 A8 WO0044120 A8 WO 0044120A8
Authority
WO
WIPO (PCT)
Prior art keywords
symbol
phases
channels
hamming
received
Prior art date
Application number
PCT/US2000/001399
Other languages
French (fr)
Other versions
WO2000044120A1 (en
Inventor
Lawrence W Yonge
Original Assignee
Intellon Corp
Lawrence W Yonge
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 Intellon Corp, Lawrence W Yonge filed Critical Intellon Corp
Priority to AU32113/00A priority Critical patent/AU3211300A/en
Priority to EP00909936A priority patent/EP1145470B1/en
Priority to JP2000595449A priority patent/JP4751986B2/en
Priority to AT00909936T priority patent/ATE487295T1/en
Priority to CA002358931A priority patent/CA2358931C/en
Priority to DE60045186T priority patent/DE60045186D1/en
Publication of WO2000044120A1 publication Critical patent/WO2000044120A1/en
Publication of WO2000044120A8 publication Critical patent/WO2000044120A8/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
    • H04L27/2662—Symbol 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
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2679—Decision-aided

Abstract

A method is described for temporally aligning a received symbol that is transmitted via orthogonal channels, e.g., OFDM channels, with a reference symbol and/or an earlier received symbol. The method includes computing phases (154) of the first symbol for the orthogonal transmission channels and comparing (157) the computed phases of the first symbol with phases of the reference. The phases of the first symbol are successively displaced by a predetermined phase shift which depends on the channel frequency to obtain a correlation result. The temporal alignment is determined by detecting a correlation maximum based on the correlation result and used to synchronize the first symbol with the reference. The reference can also be an earlier received symbol to provide autocorrelation. The received symbols can be processed by applying a window function, e.g. a Hamming, Hamming or Blackman window.
PCT/US2000/001399 1999-01-20 2000-01-20 Synchronization of ofdm signals WO2000044120A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU32113/00A AU3211300A (en) 1999-01-20 2000-01-20 Synchronization of ofdm signals
EP00909936A EP1145470B1 (en) 1999-01-20 2000-01-20 Synchronization of ofdm signals
JP2000595449A JP4751986B2 (en) 1999-01-20 2000-01-20 OFDM signal synchronization
AT00909936T ATE487295T1 (en) 1999-01-20 2000-01-20 SYNCHRONIZATION OF OFDM SIGNALS
CA002358931A CA2358931C (en) 1999-01-20 2000-01-20 Synchronization of ofdm signals
DE60045186T DE60045186D1 (en) 1999-01-20 2000-01-20 SYNCHRONIZATION OF OFDM SIGNALS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/234,289 1999-01-20
US09/234,289 US6111919A (en) 1999-01-20 1999-01-20 Synchronization of OFDM signals

Publications (2)

Publication Number Publication Date
WO2000044120A1 WO2000044120A1 (en) 2000-07-27
WO2000044120A8 true WO2000044120A8 (en) 2001-06-21

Family

ID=22880748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/001399 WO2000044120A1 (en) 1999-01-20 2000-01-20 Synchronization of ofdm signals

Country Status (8)

Country Link
US (1) US6111919A (en)
EP (1) EP1145470B1 (en)
JP (1) JP4751986B2 (en)
AT (1) ATE487295T1 (en)
AU (1) AU3211300A (en)
CA (1) CA2358931C (en)
DE (1) DE60045186D1 (en)
WO (1) WO2000044120A1 (en)

Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6502138B2 (en) * 1998-09-25 2002-12-31 Intel Corporation Modem with code execution adapted to symbol rate
US6560276B1 (en) * 1998-09-25 2003-05-06 Intel Corporation Synchronization techniques using an interpolation filter
US6490628B2 (en) * 1998-09-25 2002-12-03 Intel Corporation Modem using a digital signal processor and a signal based command set
US6625208B2 (en) * 1998-09-25 2003-09-23 Intel Corporation Modem using batch processing of signal samples
US6374312B1 (en) * 1998-09-25 2002-04-16 Intel Corporation System for dedicating a host processor to running one of a plurality of modem programs and dedicating a DSP to running another one of the modem programs
US6711205B1 (en) 1998-09-25 2004-03-23 Intel Corporation Tone detector for use in a modem
US6661848B1 (en) 1998-09-25 2003-12-09 Intel Corporation Integrated audio and modem device
US6711206B1 (en) 1998-09-25 2004-03-23 Intel Corporation Modem using a digital signal processor and separate transmit and receive sequencers
US6631143B1 (en) * 1999-11-12 2003-10-07 Lucent Technologies Inc. Methods and apparatus for frame synchronization in a digital audio broadcasting system
DE10000008A1 (en) * 2000-01-03 2001-07-12 Alcatel Sa Process for low-cost signal, tone and phase change detection
ES2188372B1 (en) * 2001-05-23 2004-11-16 Diseño De Sistemas En Silicio, S.A. PROCEDURE FOR THE SYNCHRONIZATION OF THE COMMUNICATION THROUGH OFDM MODULATION OF MULTIPLE USER EQUIPMENT WITH A HEADPHONE EQUIPMENT (UP CHANNEL).
US6711221B1 (en) * 2000-02-16 2004-03-23 Thomson Licensing S.A. Sampling offset correction in an orthogonal frequency division multiplexing system
DE60021524T2 (en) * 2000-04-18 2006-06-01 Sony International (Europe) Gmbh OFDM diversity transmission
NZ506558A (en) 2000-08-25 2003-04-29 Ind Res Ltd A broadband indoor communication system using ofdm
US6870808B1 (en) 2000-10-18 2005-03-22 Adaptix, Inc. Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks
US6950475B1 (en) * 2000-12-11 2005-09-27 Cisco Technology, Inc. OFDM receiver clock synchronization system
WO2002049306A2 (en) * 2000-12-15 2002-06-20 Broadstorm Telecommunications, Inc. Multi-carrier communications with group-based subcarrier allocation
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US7139237B2 (en) * 2000-12-29 2006-11-21 Motorola, Inc. Method and system for multirate multiuser modulation
NZ509688A (en) 2001-02-01 2003-06-30 Ind Res Ltd Maximum likelihood sychronisation (estimating time delay) for wireless digital communications system using a pilot symbol
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
AU2002240566A1 (en) * 2001-03-09 2002-09-24 Flarion Technologies, Inc. Method of symbol timing synchronization in communication systems
DE10112773B4 (en) * 2001-03-16 2012-09-20 Rohde & Schwarz Gmbh & Co Kg Method for frequency and time synchronization of an OFDM receiver
US6912262B1 (en) 2001-04-30 2005-06-28 Maxim Integrated Products, Inc. Wideband symbol synchronization in the presence of multiple strong narrowband interference
US7020218B2 (en) * 2001-06-18 2006-03-28 Arnesen David M Sliding-window transform with integrated windowing
JP3798656B2 (en) * 2001-06-22 2006-07-19 株式会社ケンウッド Orthogonal frequency division multiplexing signal receiving apparatus, receiving apparatus, orthogonal frequency division multiplexing signal receiving method and receiving method
US6985531B2 (en) * 2001-07-13 2006-01-10 Cyntrust Communications, Inc. Dual domain differential encoder/decoder
US7116745B2 (en) 2002-04-17 2006-10-03 Intellon Corporation Block oriented digital communication system and method
US7327794B2 (en) * 2002-06-24 2008-02-05 Intellon Corporation Method and apparatus for detecting a jammed channel in a block oriented digital communication system
AU2003284317A1 (en) * 2002-10-21 2004-05-13 Intellon Corporation Contention-free access intervals on a csma network
GB0303546D0 (en) * 2003-02-15 2003-03-19 4I2I Comm Ltd Synchronisation method for ofdm symbols
WO2004075502A2 (en) * 2003-02-19 2004-09-02 Matsushita Electric Industrial Co. Ltd. Receiving apparatus and method for digital multi-carrier transmission
US6950387B2 (en) * 2003-02-28 2005-09-27 Wisair Ltd. Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques
ES2221803B1 (en) * 2003-06-18 2006-03-01 Diseño De Sistemas En Silicio, S.A. PROCEDURE FOR ACCESS TO THE MEDIA TRANSMISSION OF MULTIPLE NODES OF COMMUNICATIONS ON ELECTRICAL NETWORK.
US8090857B2 (en) 2003-11-24 2012-01-03 Qualcomm Atheros, Inc. Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks
US7684568B2 (en) * 2003-11-24 2010-03-23 Intellon Corporation Encrypting data in a communication network
FR2868656B1 (en) * 2004-04-06 2006-06-02 Wavecom Sa CELL RADIOTELEPHONY SIGNAL FOR SYNCHRONIZATION AT THE ENTITY OF AN ADDITIONAL CHANNEL BY SYMBOL DIALING, METHOD, TERMINAL AND CORRESPONDING BASE STATION
DE102004044957B4 (en) * 2004-09-16 2007-04-19 Infineon Technologies Ag Medium access control unit, mobile radio device and method for mapping by means of a mobile radio device data to be transmitted
US7573851B2 (en) 2004-12-07 2009-08-11 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
US7756005B2 (en) * 2005-03-11 2010-07-13 Qualcomm Incorporated Coarse timing/frame acquisition of OFDM system using time division multiplexed pilot symbol
US7590183B2 (en) * 2005-05-12 2009-09-15 Intellon Corporation Generating signals for transmission of information
US7688904B2 (en) * 2005-05-12 2010-03-30 Intellon Corporation Generating signals for transmission of information
US7729372B2 (en) 2005-07-27 2010-06-01 Sharp Corporation Communicating in a network that includes a medium having varying transmission characteristics
US8175190B2 (en) 2005-07-27 2012-05-08 Qualcomm Atheros, Inc. Managing spectra of modulated signals in a communication network
US7822059B2 (en) 2005-07-27 2010-10-26 Atheros Communications, Inc. Managing contention-free time allocations in a network
US7558294B2 (en) * 2005-07-27 2009-07-07 Intellon Corporation Time synchronization in a network
JP4949738B2 (en) * 2006-05-29 2012-06-13 富士通セミコンダクター株式会社 Digital broadcast receiver, mobile terminal and channel search method
CN101669341B (en) * 2007-04-30 2014-03-12 Lm爱立信电话有限公司 Synchronization time difference measurements in OFDM systems
KR101484798B1 (en) 2007-05-10 2015-01-28 퀄컴 인코포레이티드 Managing distributed access to a shared medium
US8112358B2 (en) 2007-06-04 2012-02-07 Qualcomm Atheros, Inc. Authorizing customer premise equipment on a sub-network
JP4470994B2 (en) * 2007-12-14 2010-06-02 トヨタ自動車株式会社 Audio system for vehicles
JP5543664B2 (en) 2010-04-12 2014-07-09 クゥアルコム・インコーポレイテッド Delayed acknowledgment for low overhead communication in networks
JP5649877B2 (en) 2010-08-30 2015-01-07 ラピスセミコンダクタ株式会社 Correlator and demodulator including the same
US10091044B2 (en) 2014-07-17 2018-10-02 Conversant Intellectual Property Management Inc. System and method for frequency synchronization of Doppler-shifted subcarriers
CN111106892B (en) * 2017-02-05 2021-08-24 大尧信息科技(湖南)有限公司 Synchronous detection method in narrow-band wireless communication terminal
US11855683B2 (en) * 2021-06-29 2023-12-26 Raytheon Company Configurable acquisition engine for receiver of spread spectrum signals

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4438511A (en) * 1980-11-10 1984-03-20 Telebit Corporation Packetized ensemble modem
US5488632A (en) * 1990-03-30 1996-01-30 National Transcommunications Limited Transmission and reception in a hostile interference environment
SG44771A1 (en) * 1991-02-28 1997-12-19 Philips Electronics Nv System for broadcasting and receiving digital data receiver and transmitter for use in such system
US5282222A (en) * 1992-03-31 1994-01-25 Michel Fattouche Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum
US5555268A (en) * 1994-01-24 1996-09-10 Fattouche; Michel Multicode direct sequence spread spectrum
GB9218874D0 (en) * 1992-09-07 1992-10-21 British Broadcasting Corp Improvements relating to the transmission of frequency division multiplex signals
DE69427099T2 (en) * 1993-01-20 2001-11-08 Koninkl Philips Electronics Nv Transmission system with clock recovery
SE9302453L (en) * 1993-07-20 1994-10-17 Telia Ab Method and apparatus for synchronization in digital transmission system of type OFDM
JPH0746217A (en) * 1993-07-26 1995-02-14 Sony Corp Digital demodulator
JPH0746218A (en) * 1993-07-28 1995-02-14 Sony Corp Digital demodulator
US5444697A (en) * 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
US5596604A (en) * 1993-08-17 1997-01-21 Amati Communications Corporation Multicarrier modulation transmission system with variable delay
US5450456A (en) * 1993-11-12 1995-09-12 Daimler Benz Ag Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
JP3041175B2 (en) * 1993-11-12 2000-05-15 株式会社東芝 OFDM synchronous demodulation circuit
JP3074103B2 (en) * 1993-11-16 2000-08-07 株式会社東芝 OFDM synchronous demodulation circuit
SE9400116L (en) * 1994-01-18 1995-03-27 Telia Ab Procedure and arrangement for synchronization in OFDM modulation
JP2989742B2 (en) * 1994-05-20 1999-12-13 株式会社日立製作所 Digital broadcasting system, transmission system for the digital broadcasting, and receiving system for the digital broadcasting
JP2731722B2 (en) * 1994-05-26 1998-03-25 日本電気株式会社 Clock frequency automatic control system and transmitter and receiver used therefor
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
JP3421879B2 (en) * 1994-10-05 2003-06-30 ソニー株式会社 Demodulator
JP3447823B2 (en) * 1994-11-11 2003-09-16 アルパイン株式会社 Digital broadcast receiving method
US5682376A (en) * 1994-12-20 1997-10-28 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor
US5774450A (en) * 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
JP3116764B2 (en) * 1995-02-15 2000-12-11 株式会社日立製作所 Digital transmission signal receiver and digital transmission system
JP3130752B2 (en) * 1995-02-24 2001-01-31 株式会社東芝 OFDM transmission receiving method and transmitting / receiving apparatus
SE514986C2 (en) * 1995-03-01 2001-05-28 Telia Ab Method and device for synchronization with OFDM systems
US5636224A (en) * 1995-04-28 1997-06-03 Motorola Inc. Method and apparatus for interleave/de-interleave addressing in data communication circuits
FI99252C (en) * 1995-07-03 1997-12-29 Nokia Mobile Phones Ltd Combined radio signal modulation and multi-use method
JP2875976B2 (en) * 1996-01-29 1999-03-31 三星電子株式会社 Orthogonal frequency division multiplexing method and synchronization method, and orthogonal frequency division multiplexing modulator and demodulator
US5802117A (en) * 1996-02-08 1998-09-01 Philips Electronics North America Corporation Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
KR100186930B1 (en) * 1996-03-13 1999-05-15 (소장)배문한 Initial frame synchronization method using ofdm method
US5802044A (en) * 1996-04-26 1998-09-01 Motorola, Inc. Multicarrier reverse link timing synchronization system, device and method
JP3556047B2 (en) * 1996-05-22 2004-08-18 三菱電機株式会社 Digital broadcast receiver
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
CA2183140C (en) * 1996-08-12 2001-11-20 Grant Mcgibney Ofdm timing and frequency recovery system
FR2756687B1 (en) * 1996-11-29 2001-10-05 Daewoo Electronics Co Ltd DEVICE FOR CORRECTING A FREQUENCY OFFSET IN AN OFDM RECEPTION SYSTEM
JP3563231B2 (en) * 1997-04-04 2004-09-08 株式会社デノン Frequency control device and method, receiving device, and communication device
US5991289A (en) * 1997-08-05 1999-11-23 Industrial Technology Research Institute Synchronization method and apparatus for guard interval-based OFDM signals
JP3946893B2 (en) * 1998-12-28 2007-07-18 株式会社東芝 Digital communication device

Also Published As

Publication number Publication date
CA2358931C (en) 2009-09-08
JP4751986B2 (en) 2011-08-17
WO2000044120A1 (en) 2000-07-27
EP1145470A1 (en) 2001-10-17
EP1145470A4 (en) 2006-01-11
DE60045186D1 (en) 2010-12-16
EP1145470B1 (en) 2010-11-03
ATE487295T1 (en) 2010-11-15
JP2002535919A (en) 2002-10-22
US6111919A (en) 2000-08-29
AU3211300A (en) 2000-08-07
CA2358931A1 (en) 2000-07-27

Similar Documents

Publication Publication Date Title
WO2000044120A8 (en) Synchronization of ofdm signals
EP1188266A4 (en) Apparatus and method for achieving symbol timing and frequency synchronization to orthogonal frequency division multiplexing signal
US7110387B1 (en) System and method for compensating timing error using pilot symbol in OFDM/CDMA communication system
EP1720311B1 (en) Synchronisation of digital communication systems
JP4587516B2 (en) Receiving apparatus and synchronization method
KR100234330B1 (en) The grard interval length detection for OFDM system and method thereof
US5790784A (en) Network for time synchronizing a digital information processing system with received digital information
KR970701464A (en) DEVICE AND METHOD FOR INITIALLY SYNCHRONIZING SPREAD-SPECTRUM CODE OF CDMA TRANSMISSION SYSTEM
WO1998010547A3 (en) Improvements in, or relating to, multi-carrier transmission systems
JP2006504359A (en) Method and apparatus for synchronizing training sequences
US7616723B2 (en) Method for symbol timing synchronization and apparatus thereof
CA2328169C (en) Coarse frequency synchronisation in multicarrier systems
EP1063779A3 (en) Reverse spreading device, timing detecting device, channel estimating device, frequency error measurement method and automatic frequency control method
US7075997B1 (en) OFDM frame synchronization
KR19980023283A (en) Frame Synchronization Detection Device Using Protection Period in OFDM Transmission Method
KR100634449B1 (en) Method and Apparatus for measuring Guard Interval in an OFDM Communication Systems
WO2008072084A3 (en) Frame synchronization using correlation between permuted sequences
CN101938347A (en) Timing error extraction device and method
US7561560B2 (en) Symbol timing synchronization system for orthogonal frequency division multiplexing systems
JP3145054B2 (en) Orthogonal frequency division multiplexing receiver
KR20070121426A (en) Apparatus for detecting synchronization of the signal and method thereof
KR20020086161A (en) Training symbol determining method and apparatus and method for estimating frequency offset in OFDM system
KR100442350B1 (en) Carrier frequency synchronization apparatus and method in orthogonal frequency-division multiplexing
KR100569831B1 (en) Method and Apparatus for Frame Synchronization Using Rotated QPSK Symbols
MXPA00009994A (en) Frame structure and frame synchronisation for multicarrier systems

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: C1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: C1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

CFP Corrected version of a pamphlet front page

Free format text: REVISED ABSTRACT RECEIVED BY THE INTERNATIONAL BUREAU AFTER COMPLETION OF THE TECHNICAL PREPARATIONS FOR INTERNATIONAL PUBLICATION

WWE Wipo information: entry into national phase

Ref document number: 2000909936

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2358931

Country of ref document: CA

Ref country code: CA

Ref document number: 2358931

Kind code of ref document: A

Format of ref document f/p: F

ENP Entry into the national phase

Ref country code: JP

Ref document number: 2000 595449

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 2000909936

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)