SG42324A1 - Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems - Google Patents

Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems

Info

Publication number
SG42324A1
SG42324A1 SG1996000574A SG1996000574A SG42324A1 SG 42324 A1 SG42324 A1 SG 42324A1 SG 1996000574 A SG1996000574 A SG 1996000574A SG 1996000574 A SG1996000574 A SG 1996000574A SG 42324 A1 SG42324 A1 SG 42324A1
Authority
SG
Singapore
Prior art keywords
peak
carrier
reducing
communication systems
average power
Prior art date
Application number
SG1996000574A
Other languages
English (en)
Inventor
Bernard James Arntz
Josef Ocenasek
William Allen Nitz
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Publication of SG42324A1 publication Critical patent/SG42324A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • H04L27/2614—Peak power aspects
    • H04L27/2621—Reduction thereof using phase offsets between subcarriers
    • 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
    • H04L27/2637—Modulators with direct modulation of individual subcarriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
SG1996000574A 1992-10-20 1993-10-13 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems SG42324A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/964,596 US5302914A (en) 1992-10-20 1992-10-20 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems

Publications (1)

Publication Number Publication Date
SG42324A1 true SG42324A1 (en) 1997-08-15

Family

ID=25508742

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996000574A SG42324A1 (en) 1992-10-20 1993-10-13 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems

Country Status (9)

Country Link
US (1) US5302914A (en, 2012)
EP (1) EP0594358B1 (en, 2012)
JP (1) JP2735469B2 (en, 2012)
AU (1) AU655375B2 (en, 2012)
CA (1) CA2108233C (en, 2012)
DE (1) DE69317202T2 (en, 2012)
ES (1) ES2114009T3 (en, 2012)
SG (1) SG42324A1 (en, 2012)
TW (1) TW225620B (en, 2012)

Families Citing this family (121)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1256225B (it) * 1992-12-23 1995-11-29 Sits Soc It Telecom Siemens Procedimento e circuito per la compensazione adattativa delle distorsioni di guadagno di un amplificatore alle microonde con linearizzatore
US5551070A (en) * 1993-01-28 1996-08-27 Telefonaktiebolaget Lm Ericsson Cartesian multicarrier feedback
US5854571A (en) * 1993-10-28 1998-12-29 Motorola Inc. Method and apparatus for controlling a peak envelope power of a power amplifier
TW293968B (en, 2012) * 1994-09-29 1996-12-21 Radio Frequency Systems Inc
TW280064B (en, 2012) * 1994-09-29 1996-07-01 Radio Frequency Systems Inc
US5570350A (en) * 1994-09-30 1996-10-29 Lucent Technologies Inc. CDMA cellular communications with multicarrier signal processing
US5625871A (en) * 1994-09-30 1997-04-29 Lucent Technologies Inc. Cellular communications system with multicarrier signal processing
US5701596A (en) * 1994-12-01 1997-12-23 Radio Frequency Systems, Inc. Modular interconnect matrix for matrix connection of a plurality of antennas with a plurality of radio channel units
KR960027576A (ko) * 1994-12-01 1996-07-22 리차드 탤런 육상 이동 무선 베이스 사이트에 사용되는 무선 신호 스캐닝 및 타겟팅 시스템
JP2787619B2 (ja) * 1994-12-05 1998-08-20 エヌ・ティ・ティ移動通信網株式会社 Ｆｓｋ信号多重化装置
EP0719001A1 (en) * 1994-12-22 1996-06-26 ALCATEL BELL Naamloze Vennootschap DMT modulator
US5835536A (en) * 1995-02-02 1998-11-10 Motorola, Inc. Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits
CN1078412C (zh) * 1995-02-23 2002-01-23 Ntt移动通信网株式会社 可变速率传输方法及使用该方法的发射机和接收机
EP0735731B1 (en) * 1995-03-31 2004-05-12 Victor Company Of Japan, Limited Multicarrier modulator demodulator, with arrangements for reducing peak power
GB2301751B (en) 1995-06-02 2000-02-09 Dsc Communications Control message transmission in telecommunications systems
US5745846A (en) * 1995-08-07 1998-04-28 Lucent Technologies, Inc. Channelized apparatus for equalizing carrier powers of multicarrier signal
US5872481A (en) * 1995-12-27 1999-02-16 Qualcomm Incorporated Efficient parallel-stage power amplifier
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US5694431A (en) * 1996-01-17 1997-12-02 Motorola, Inc. Method and apparatus for average power control
GB2309363B (en) * 1996-01-17 2000-07-12 Motorola Ltd Multicarrier communication system and method for peak power control
US5710990A (en) * 1996-03-21 1998-01-20 Motorola, Inc. Transmitter which adjusts peak-to-average power of a multicarrier signal by switching between a group of channels and a phase-adjusted group of channels
US5778307A (en) * 1996-03-29 1998-07-07 Motorola, Inc. Amplifier with adaptive output allocation and method thereof
US5815532A (en) * 1996-05-01 1998-09-29 Glenayre Electronics, Inc. Method and apparatus for peak-to-average ratio control in an amplitude modulation paging transmitter
GB2313525B (en) * 1996-05-24 2000-06-07 Motorola Ltd Filter for multicarrier communication system and method for peak power control therein
WO1998001964A1 (en) * 1996-07-05 1998-01-15 Clifford Harris Modular transmission system and method
US6185182B1 (en) 1996-07-26 2001-02-06 Radio Frequency Systems, Inc. Power sharing amplifier system for a cellular communications system
DE19635813A1 (de) * 1996-09-04 1998-03-05 Johannes Prof Dr Ing Huber Verfahren zur Reduktion des Spitzenwertfaktors bei digitalen Übertragungsverfahren
US5862466A (en) * 1997-01-09 1999-01-19 Hewlett-Packard Company Method and apparatus for automatically balancing a radio-frequency mixer
US6018644A (en) * 1997-01-28 2000-01-25 Northrop Grumman Corporation Low-loss, fault-tolerant antenna interface unit
US6501771B2 (en) 1997-02-11 2002-12-31 At&T Wireless Services, Inc. Delay compensation
US6085114A (en) 1997-02-06 2000-07-04 At&T Wireless Systems Inc. Remote wireless unit having reduced power operating mode
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6408016B1 (en) * 1997-02-24 2002-06-18 At&T Wireless Services, Inc. Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6359923B1 (en) * 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
US6584144B2 (en) * 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US6859828B1 (en) * 1997-02-25 2005-02-22 Agilent Technologies, Inc. Bi-directional test system for network analysis
US6069525A (en) * 1997-04-17 2000-05-30 Qualcomm Incorporated Dual-mode amplifier with high efficiency and high linearity
EP1708377B1 (en) * 1997-06-17 2009-09-30 Qualcomm Incorporated Reduced peak-to-average amplitude multichannel
US6175551B1 (en) * 1997-07-31 2001-01-16 Lucent Technologies, Inc. Transmission system and method employing peak cancellation to reduce the peak-to-average power ratio
US5966048A (en) * 1997-11-25 1999-10-12 Hughes Electronics Corporation Low IMD amplification method and apparatus
US6424681B1 (en) * 1998-04-20 2002-07-23 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
US6314146B1 (en) 1998-06-05 2001-11-06 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
US6512797B1 (en) * 1998-04-20 2003-01-28 The Board Of Trustees Of The Leland Stanford Junior University Peak to average power ratio reduction
JP3462388B2 (ja) 1998-04-28 2003-11-05 松下電器産業株式会社 無線通信装置
US6381212B1 (en) 1998-06-17 2002-04-30 Radio Frequency Systems, Inc. Power sharing amplifier system for amplifying multiple input signals with shared power amplifiers
CN1153371C (zh) * 1998-06-29 2004-06-09 诺基亚网络有限公司 多载波无线发射机中的功率控制
US6445747B1 (en) 1998-07-14 2002-09-03 At&T Corporation Method and apparatus to reduce peak to average power ratio in multi-carrier modulation
US6069526A (en) * 1998-08-04 2000-05-30 Qualcomm Incorporated Partial or complete amplifier bypass
US6757299B1 (en) * 1998-09-24 2004-06-29 Silicon Automation Systems Limited Peak power to average power ratio reduction in multicarrier communication systems using error-correcting code
KR20000039982A (ko) * 1998-12-16 2000-07-05 김영환 시디엠에이 통신 시스템의 기지국 로컬 주파수 발생장치
US6166601A (en) * 1999-01-07 2000-12-26 Wiseband Communications Ltd. Super-linear multi-carrier power amplifier
JP2000269919A (ja) 1999-03-16 2000-09-29 Matsushita Electric Ind Co Ltd Ｏｆｄｍ通信装置
DE69939979D1 (de) * 1999-04-06 2009-01-08 Mitsubishi Electric Corp System und vorrichtung zur multiplexübertragung in einem cdma system
US6160449A (en) * 1999-07-22 2000-12-12 Motorola, Inc. Power amplifying circuit with load adjust for control of adjacent and alternate channel power
US6166598A (en) * 1999-07-22 2000-12-26 Motorola, Inc. Power amplifying circuit with supply adjust to control adjacent and alternate channel power
US6438360B1 (en) 1999-07-22 2002-08-20 Motorola, Inc. Amplifier system with load control to produce an amplitude envelope
US6349216B1 (en) 1999-07-22 2002-02-19 Motorola, Inc. Load envelope following amplifier system
US6128350A (en) * 1999-08-24 2000-10-03 Usa Digital Radio, Inc. Method and apparatus for reducing peak to average power ratio in digital broadcasting systems
US6434135B1 (en) * 1999-08-31 2002-08-13 Interdigital Technology Corporation Adaptive RF amplifier prelimiter
GB2357647A (en) * 1999-12-24 2001-06-27 Nokia Networks Oy Multi-carrier TDMA base station where uniform transmission power across time slots is achieved by a method of allocation of new calls
US6825719B1 (en) * 2000-05-26 2004-11-30 Intel Corporation RF power amplifier and methods for improving the efficiency thereof
GB0015236D0 (en) * 2000-06-21 2000-08-16 Element 14 Inc Processing of multi-carrier signal
EP1302045A2 (en) * 2000-07-21 2003-04-16 PMC-Sierra Ltd. Reduction of peak to average power ratio
US6957087B1 (en) 2000-10-19 2005-10-18 Telefonaktiebolaget Lm Ericsson (Publ) Power control in MCPA equipped base stations
GB2368737B (en) * 2000-10-31 2004-11-10 Roke Manor Research Method and apparatus for controlling an amplifier
US6587511B2 (en) * 2001-01-26 2003-07-01 Intel Corporation Radio frequency transmitter and methods thereof
US6990153B1 (en) * 2001-02-06 2006-01-24 Agency For Science, Technology And Research Method and apparatus for semi-blind communication channel estimation
US7336726B2 (en) * 2001-02-27 2008-02-26 Huawei Technologies Co., Ltd. Apparatus and method for power control in digital mobile communication system broadband multi-carrier base station
DE60142411D1 (de) 2001-02-27 2010-07-29 Huawei Tech Co Ltd Verfahren und Vorrichtung zur Mehrträger-Leistungsregelung einer Basisstation in einem digitalen Breitband-Mobilkommunikationssystem
AU2002330846A1 (en) * 2001-05-01 2003-03-03 Binj Technologies, Inc. Constant amplitude modulation for dsl
US7266354B2 (en) * 2001-06-25 2007-09-04 Telefonaktiebolaget Lm Ericsson (Publ) Reducing the peak-to-average power ratio of a communication signal
KR100547843B1 (ko) * 2001-07-13 2006-02-01 삼성전자주식회사 이동통신 시스템의 송신전력 제어장치 및 방법
US7397860B1 (en) 2001-10-04 2008-07-08 Brooktree Broadband Holding, Inc. Fractional local peak detection and mitigation for PAR reduction
US7136423B1 (en) 2001-10-04 2006-11-14 Conexant, Inc. Side tones packets injection (STPI) for PAR reduction
US8331490B2 (en) * 2001-10-22 2012-12-11 Panasonic Corporation Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain
US20070211829A1 (en) * 2001-10-22 2007-09-13 Matsushita Electric Industrial Co., Ltd. Method and apparatus for pulse optimization for non-linear filtering
US7054385B2 (en) * 2001-10-22 2006-05-30 Tropian, Inc. Reduction of average-to-minimum power ratio in communications signals
US20030123566A1 (en) * 2001-12-27 2003-07-03 Jaime Hasson Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof
US20030125065A1 (en) * 2001-12-27 2003-07-03 Ilan Barak Method and apparatus for generating an output signal
US7336753B2 (en) * 2003-06-26 2008-02-26 Marvell International Ltd. Transmitter
US7912145B2 (en) * 2003-12-15 2011-03-22 Marvell World Trade Ltd. Filter for a modulator and methods thereof
US7356315B2 (en) * 2003-12-17 2008-04-08 Intel Corporation Outphasing modulators and methods of outphasing modulation
US7391713B2 (en) * 2003-12-30 2008-06-24 Kiomars Anvari Phase rotation technique to reduce Crest Factor of multi-carrier signals
TWI249297B (en) * 2004-01-20 2006-02-11 Realtek Semiconductor Corp Method and apparatus for peak to average power ratio reduction
US7542517B2 (en) 2004-02-02 2009-06-02 Ibiquity Digital Corporation Peak-to-average power reduction for FM OFDM transmission
JP4429795B2 (ja) * 2004-05-06 2010-03-10 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム、無線送信機及び無線受信機
JP4469685B2 (ja) * 2004-08-25 2010-05-26 富士通株式会社 出力電力誤差吸収回路及び同回路を有するマルチキャリア送信機
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US20130078934A1 (en) 2011-04-08 2013-03-28 Gregory Rawlins Systems and Methods of RF Power Transmission, Modulation, and Amplification
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
CN101416383B (zh) * 2006-04-10 2011-05-18 艾利森电话股份有限公司 用于补偿复合放大器中信号失真的方法
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8315336B2 (en) * 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
US7620129B2 (en) 2007-01-16 2009-11-17 Parkervision, Inc. RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
CN101688889B (zh) * 2007-05-14 2012-08-15 希泰特微波公司 带波峰因数测量的rf检测器
WO2008156800A1 (en) 2007-06-19 2008-12-24 Parkervision, Inc. Combiner-less multiple input single output (miso) amplification with blended control
WO2009005768A1 (en) 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US7595688B2 (en) * 2007-10-31 2009-09-29 Raytheon Company High power commutating multiple output amplifier system
JP5049305B2 (ja) * 2008-03-10 2012-10-17 アンリツ株式会社 周波数変換装置
JP4996644B2 (ja) * 2009-03-30 2012-08-08 アンリツ株式会社 周波数変換装置
US8582687B2 (en) * 2009-06-26 2013-11-12 Plusn, Llc System and method for controlling combined radio signals
US8536950B2 (en) 2009-08-03 2013-09-17 Qualcomm Incorporated Multi-stage impedance matching
US8102205B2 (en) 2009-08-04 2012-01-24 Qualcomm, Incorporated Amplifier module with multiple operating modes
CN102577107B (zh) * 2009-10-06 2015-06-10 富士通株式会社 PAPR(Peak-to-Average Power Ratio)确定装置以及通信装置
US9237526B2 (en) 2010-03-12 2016-01-12 Sunrise Micro Devices, Inc. Power efficient communications
KR20140034895A (ko) 2011-06-02 2014-03-20 파커비전, 인크. 안테나 제어
US9577855B1 (en) * 2011-07-13 2017-02-21 Softronics, Ltd. Channelized multicarrier digitizer
CN102255699B (zh) * 2011-08-22 2013-06-26 宁波大学 一种抗衰落无线多媒体广播信号成帧调制方法
US8787873B1 (en) 2011-11-04 2014-07-22 Plusn Llc System and method for communicating using bandwidth on demand
JP5949781B2 (ja) * 2011-12-19 2016-07-13 日本電気株式会社 送信装置および無線信号送信方法
EP2745484A4 (en) * 2012-01-12 2015-07-15 Ericsson Telefon Ab L M DEVICE AND METHOD FOR ADAPTIVE PHASE SHIFT
KR20160058855A (ko) 2013-09-17 2016-05-25 파커비전, 인크. 정보를 포함하는 시간의 함수를 렌더링하기 위한 방법, 장치 및 시스템
CN109889318A (zh) 2013-11-26 2019-06-14 普鲁斯恩公司 通信方法、通信系统和计算机可读介质
GB201518859D0 (en) * 2015-10-23 2015-12-09 Airbus Defence & Space Ltd High-efficiency amplifier
US10306724B2 (en) * 2017-01-15 2019-05-28 Ecosense Lighting Inc. Lighting systems, and systems for determining periodic values of a phase angle of a waveform power input
US10483850B1 (en) 2017-09-18 2019-11-19 Ecosense Lighting Inc. Universal input-voltage-compatible switched-mode power supply
US11032112B2 (en) * 2019-10-18 2021-06-08 Motorola Solutions, Inc. Multi-carrier crest factor reduction
CN112422093A (zh) * 2020-11-20 2021-02-26 成都沃特塞恩电子技术有限公司 一种功率合成方法、装置、电子设备及存储介质

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010426A (en) * 1975-11-12 1977-03-01 The United States Of America As Represented By The Secretary Of The Air Force Rf power amplifier parallel redundant system
US4064464A (en) * 1976-04-13 1977-12-20 Westinghouse Electric Corporation Amplitude stabilized power amplifier
US4370622A (en) * 1981-03-23 1983-01-25 Rockwell International Corporation IMD Limiter
US4546313A (en) * 1983-03-14 1985-10-08 The United States Of America As Represented By The United States Department Of Energy Peak power ratio generator
US5043673A (en) * 1989-03-31 1991-08-27 Mitsubishi Denki Kabushiki Kaisha Compensating circuit for a high frequency amplifier
JP2875811B2 (ja) * 1989-05-19 1999-03-31 日本電信電話株式会社 信号多重化回路
US5045799A (en) * 1989-09-28 1991-09-03 Rockwell International Corporation Peak to average power ratio reduction in a power amplifier with multiple carrier input
JPH03198407A (ja) * 1989-12-26 1991-08-29 Mitsubishi Electric Corp 線形増幅器
CA2046413C (en) * 1990-07-11 1994-01-04 Shoichi Narahashi Feed-forward amplifier
US5101211A (en) * 1991-01-10 1992-03-31 Hughes Aircraft Company Closed loop RF power amplifier output correction circuit
JPH05130191A (ja) * 1991-10-31 1993-05-25 Nippon Motoroola Kk マルチサブチヤネル信号の位相制御によるピーク／平均値比率低減方法

Also Published As

Publication number Publication date
EP0594358B1 (en) 1998-03-04
CA2108233C (en) 1999-09-28
EP0594358A2 (en) 1994-04-27
JP2735469B2 (ja) 1998-04-02
CA2108233A1 (en) 1994-04-21
ES2114009T3 (es) 1998-05-16
AU4902193A (en) 1994-05-05
US5302914A (en) 1994-04-12
TW225620B (en, 2012) 1994-06-21
EP0594358A3 (en) 1994-06-22
DE69317202D1 (de) 1998-04-09
DE69317202T2 (de) 1998-06-25
JPH06204959A (ja) 1994-07-22
AU655375B2 (en) 1994-12-15

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