DE69729681D1 - Frequenzmultiplexnachrichtenübertragungssystem mit variabler Bandbreite - Google Patents

Frequenzmultiplexnachrichtenübertragungssystem mit variabler Bandbreite

Info

Publication number
DE69729681D1
DE69729681D1 DE69729681T DE69729681T DE69729681D1 DE 69729681 D1 DE69729681 D1 DE 69729681D1 DE 69729681 T DE69729681 T DE 69729681T DE 69729681 T DE69729681 T DE 69729681T DE 69729681 D1 DE69729681 D1 DE 69729681D1
Authority
DE
Germany
Prior art keywords
frequency division
messaging system
division multiplex
variable bandwidth
bandwidth frequency
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69729681T
Other languages
English (en)
Other versions
DE69729681T2 (de
Inventor
Osamu Ichiyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69729681D1 publication Critical patent/DE69729681D1/de
Publication of DE69729681T2 publication Critical patent/DE69729681T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing
DE69729681T 1996-04-15 1997-04-14 Frequenzmultiplexnachrichtenübertragungssystem mit variabler Bandbreite Expired - Fee Related DE69729681T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9283496A JP2738385B2 (ja) 1996-04-15 1996-04-15 可変帯域幅周波数分割多重通信方式
JP9283496 1996-04-15

Publications (2)

Publication Number Publication Date
DE69729681D1 true DE69729681D1 (de) 2004-08-05
DE69729681T2 DE69729681T2 (de) 2004-12-09

Family

ID=14065468

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69729681T Expired - Fee Related DE69729681T2 (de) 1996-04-15 1997-04-14 Frequenzmultiplexnachrichtenübertragungssystem mit variabler Bandbreite

Country Status (4)

Country Link
US (1) US6014366A (de)
EP (1) EP0802644B1 (de)
JP (1) JP2738385B2 (de)
DE (1) DE69729681T2 (de)

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US5867479A (en) * 1997-06-27 1999-02-02 Lockheed Martin Corporation Digital multi-channel demultiplexer/multiplex (MCD/M architecture)
US6442381B1 (en) 1998-10-30 2002-08-27 Echelon Corporation Method and apparatus for defining and generating local oscillator signals for down converter
JP3399400B2 (ja) 1999-04-15 2003-04-21 日本電気株式会社 周波数偏移復調回路
US6493358B1 (en) * 1999-05-19 2002-12-10 Ems Technologies Canada, Limited Apparatus and method for demultiplexing a frequency division multiplexed input signal and polyphase digital filter network therefor
US7102692B1 (en) * 1999-10-13 2006-09-05 Thomson Licensing Digital and analog television signal digitization and processing device
EP2094058B1 (de) 2000-03-27 2013-01-16 LGC Wireless, LLC Verteilungssystem für ein Funkfrequenzsignal
US6704545B1 (en) 2000-07-19 2004-03-09 Adc Telecommunications, Inc. Point-to-multipoint digital radio frequency transport
US6944406B1 (en) * 2000-08-04 2005-09-13 Fujitsu Limited Transport system with tunable channel spacing DWDM
US6512799B2 (en) 2001-02-06 2003-01-28 University Of South Alabama Digital communication system and method for increased bit rates
US6704372B2 (en) * 2001-09-18 2004-03-09 Broadlogic Network Technologies Inc. Digital implementation of multi-channel demodulators
US20030069022A1 (en) * 2001-10-04 2003-04-10 Mark Kintis Amplitude cancellation topology for multichannel applications
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
US7430254B1 (en) * 2003-08-06 2008-09-30 Lockheed Martin Corporation Matched detector/channelizer with adaptive threshold
US7424066B2 (en) * 2005-01-21 2008-09-09 Analog Devices, Inc. Receiver structures for selectable direct conversion and low intermediate frequency operational modes
JP4541199B2 (ja) * 2005-03-18 2010-09-08 三菱電機株式会社 受信装置
US7970345B2 (en) * 2005-06-22 2011-06-28 Atc Technologies, Llc Systems and methods of waveform and/or information splitting for wireless transmission of information to one or more radioterminals over a plurality of transmission paths and/or system elements
CN104202279A (zh) 2006-12-26 2014-12-10 大力系统有限公司 用于多信道宽带通信系统中的基带预失真线性化的方法和系统
GB0810950D0 (en) 2008-06-04 2008-07-23 Sony Uk Ltd Digital signal transmission and reception
JP5398242B2 (ja) * 2008-12-03 2014-01-29 株式会社東芝 レーダ信号処理装置及びレーダ装置
US8731123B2 (en) 2009-11-30 2014-05-20 Mitsubishi Electric Corporation Demultiplexing device, multiplexing device, and relay device
CA2791005C (en) 2010-02-25 2015-09-29 Mitsubishi Electric Corporation Interference wave suppressing apparatus, relay apparatus, relay system, and interference wave suppressing method
US8682338B2 (en) 2010-09-14 2014-03-25 Dali Systems Co., Ltd. Remotely reconfigurable distributed antenna system and methods
CN103180844B (zh) 2010-08-17 2017-10-03 大力系统有限公司 用于分布式天线系统的中性主机架构
EP2611030B1 (de) 2010-08-25 2019-09-25 Mitsubishi Electric Corporation Entmultiplexierungsvorrichtung, multiplexierungsvorrichtung und relaisvorrichtung
US9749947B2 (en) 2013-04-19 2017-08-29 Mitsubishi Electric Corporation Wireless communication apparatus and wireless communication control method that performs communication using a frequency division multiplexing method
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller
CN108092704B (zh) * 2016-11-21 2023-04-07 普罗斯通信技术（苏州）有限公司 多子带可变带宽直放站
EP3595173B1 (de) 2017-03-06 2021-08-11 Mitsubishi Electric Corporation Demultiplex-schaltung, multiplex-schaltung und kanalisiererrelaiseinheit
US10523305B2 (en) * 2017-05-11 2019-12-31 Wilson Electronics, Llc Variable channelized bandwidth booster
US10333639B2 (en) * 2017-06-05 2019-06-25 Capacicom Ltd. Small-footprint digital synthesis channelizer for multiple narrowband frequency-slices

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Publication number Priority date Publication date Assignee Title
US3706929A (en) * 1971-01-04 1972-12-19 Philco Ford Corp Combined modem and vocoder pipeline processor
FR2326818A1 (fr) * 1975-10-02 1977-04-29 Thomson Csf Systeme de transmission telephonique, multiplexeur et demultiplexeur pour la mise en oeuvre d'un tel systeme
JPS63200635A (ja) * 1987-02-17 1988-08-18 Nec Corp トランスマルチプレクサ
JPS63200636A (ja) * 1987-02-17 1988-08-18 Nec Corp 可変帯域幅ｆｄｍ分波回路
DE3837841C1 (en) * 1988-10-22 1990-02-15 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De Filter bank for the frequency-division multiplexing or frequency-division demultiplexing of channel signals
US5058107A (en) * 1989-01-05 1991-10-15 Hughes Aircraft Company Efficient digital frequency division multiplexed signal receiver
US5251218A (en) * 1989-01-05 1993-10-05 Hughes Aircraft Company Efficient digital frequency division multiplexed signal receiver
FR2685593B1 (fr) * 1991-12-20 1994-02-11 France Telecom Dispositif de demultiplexage en frequence a filtres numeriques.
US5396489A (en) * 1992-10-26 1995-03-07 Motorola Inc. Method and means for transmultiplexing signals between signal terminals and radio frequency channels
EP0982908B1 (de) * 1994-05-09 2005-03-09 Victor Company Of Japan, Limited Einstellung eines Referenzunterträgers bei Mehrträgerübertragung
US5657313A (en) * 1994-05-09 1997-08-12 Victor Company Of Japan, Ltd. Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing
US5822323A (en) * 1995-09-29 1998-10-13 Victor Company Of Japan, Ltd. Frequency division multiplexed signal generating apparatus and related decoding apparatus

Also Published As

Publication number Publication date
EP0802644B1 (de) 2004-06-30
DE69729681T2 (de) 2004-12-09
US6014366A (en) 2000-01-11
EP0802644A3 (de) 2000-07-05
EP0802644A2 (de) 1997-10-22
JPH09284242A (ja) 1997-10-31
JP2738385B2 (ja) 1998-04-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee