BR9711439A - TransmissÆo multiplexada de divisÆo de frequencia de sinais de sub banda - Google Patents

TransmissÆo multiplexada de divisÆo de frequencia de sinais de sub banda

Info

Publication number
BR9711439A
BR9711439A BR9711439A BR9711439A BR9711439A BR 9711439 A BR9711439 A BR 9711439A BR 9711439 A BR9711439 A BR 9711439A BR 9711439 A BR9711439 A BR 9711439A BR 9711439 A BR9711439 A BR 9711439A
Authority
BR
Brazil
Prior art keywords
frequency division
subband signals
multiplexed transmission
multiplexed
transmission
Prior art date
Application number
BR9711439A
Other languages
English (en)
Inventor
Tet Hin Yeap
Esam Mostafa Abdel-Raheem
Original Assignee
Bell Canada
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 Bell Canada filed Critical Bell Canada
Publication of BR9711439A publication Critical patent/BR9711439A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0004—Modulated-carrier systems using wavelets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
BR9711439A 1996-08-30 1997-08-29 TransmissÆo multiplexada de divisÆo de frequencia de sinais de sub banda BR9711439A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002184541A CA2184541A1 (en) 1996-08-30 1996-08-30 Method and apparatus for wavelet modulation of signals for transmission and/or storage
PCT/CA1997/000608 WO1998009383A1 (en) 1996-08-30 1997-08-29 Frequency division multiplexed transmission of sub-band signals

Publications (1)

Publication Number Publication Date
BR9711439A true BR9711439A (pt) 1999-08-24

Family

ID=4158828

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9711439A BR9711439A (pt) 1996-08-30 1997-08-29 TransmissÆo multiplexada de divisÆo de frequencia de sinais de sub banda

Country Status (9)

Country Link
US (1) US6456657B1 (pt)
EP (1) EP0920741A1 (pt)
JP (1) JP2001507530A (pt)
CN (1) CN1106722C (pt)
AU (1) AU733587B2 (pt)
BR (1) BR9711439A (pt)
CA (1) CA2184541A1 (pt)
NZ (1) NZ334843A (pt)
WO (1) WO1998009383A1 (pt)

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AU8967898A (en) * 1997-08-29 1999-03-22 Bell Canada Digital transmission using subband coding
CA2239675C (en) * 1998-06-04 2007-11-13 Tet Hin Yeap Suppression of rfi and impulse noise in communications channels
US6711121B1 (en) * 1998-10-09 2004-03-23 At&T Corp. Orthogonal code division multiplexing for twisted pair channels
US6252910B1 (en) * 1998-11-11 2001-06-26 Comspace Corporation Bandwidth efficient QAM on a TDM-FDM system for wireless communications
US6757326B1 (en) * 1998-12-28 2004-06-29 Motorola, Inc. Method and apparatus for implementing wavelet filters in a digital system
SE9903553D0 (sv) 1999-01-27 1999-10-01 Lars Liljeryd Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
FR2799073B1 (fr) * 1999-09-29 2002-01-18 France Telecom Procede de transmission d'un signal bfdm/oqam, procedes de modulation et de demodulation et dispositif correspondants
AUPQ457299A0 (en) * 1999-12-10 2000-01-13 Canon Kabushiki Kaisha Inverse dwt method and apparatus
SE0001926D0 (sv) 2000-05-23 2000-05-23 Lars Liljeryd Improved spectral translation/folding in the subband domain
WO2001099364A1 (en) * 2000-06-23 2001-12-27 Setur Ag System and method high data rate transmission
EP1168705A1 (fr) * 2000-06-30 2002-01-02 Koninklijke Philips Electronics N.V. Procédé et système pour la détection de trames de parole erronées
JP3576936B2 (ja) * 2000-07-21 2004-10-13 株式会社ケンウッド 周波数補間装置、周波数補間方法及び記録媒体
GB0020624D0 (en) * 2000-08-21 2000-10-11 Element 14 Inc Multi band DMT receiver
GB2366494A (en) * 2000-09-05 2002-03-06 Mitel Corp Dividing bandwidth into sub-bands prior to implementing an FFT in a high data rate communications network
GB2367678A (en) * 2000-09-28 2002-04-10 Sweet James Anthony Data writing and reading
US7558310B1 (en) * 2001-01-09 2009-07-07 Urbain Alfred von der Embse Multi-scale code division frequency/wavelet multiple access
US6973122B1 (en) * 2001-01-26 2005-12-06 At&T Corp. Power allocation scheme for DMT-based modems employing simplex transmission
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
WO2003046891A1 (en) 2001-11-29 2003-06-05 Coding Technologies Ab Methods for improving high frequency reconstruction
US7971225B2 (en) * 2002-02-08 2011-06-28 Finisar Corporation Bandpass component decimation and transmission of data in cable television digital return path
US7362719B2 (en) * 2002-03-22 2008-04-22 Agere Systems Inc. Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems
GB0214621D0 (en) * 2002-06-25 2002-08-07 Koninkl Philips Electronics Nv Signal receiver
JP4090293B2 (ja) * 2002-06-28 2008-05-28 三洋電機株式会社 動画像再生装置
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
US7164724B2 (en) * 2002-09-25 2007-01-16 Matsushita Electric Industrial Co., Ltd. Communication apparatus
US7889783B2 (en) * 2002-12-06 2011-02-15 Broadcom Corporation Multiple data rate communication system
US20040136602A1 (en) * 2003-01-10 2004-07-15 Nithin Nagaraj Method and apparatus for performing non-dyadic wavelet transforms
US7362816B1 (en) * 2003-04-28 2008-04-22 Xtendwave, Inc. Inversion of channel distortion by adaptive wavelet lifting
FR2854514B1 (fr) * 2003-04-30 2006-12-15 Spidcom Technologies Procede de transmission de donnees et modem par courant porteur
EP1478148A1 (de) * 2003-05-15 2004-11-17 Siemens Aktiengesellschaft Drahtloses Mehrträgerkommunikationsverfahren mit dynamischer Aufteilung der Frequenzbreite und Anzahl der Subbänder
US7680208B2 (en) * 2004-02-25 2010-03-16 Nokia Corporation Multiscale wireless communication
US8018832B2 (en) * 2004-04-15 2011-09-13 Xocyst Transfer Ag L.L.C. Packet generation systems and methods
US8958510B1 (en) * 2010-06-10 2015-02-17 Fredric J. Harris Selectable bandwidth filter
CN102104577B (zh) * 2011-03-22 2013-06-12 华南理工大学 异步多子带频率及幅度联合调制数字通信系统与方法
CN107786484B (zh) * 2011-06-10 2021-02-09 技术研究及发展基金公司 接收机、发射机以及用于数字多子频带处理的方法
EP2930860B1 (en) * 2014-04-08 2021-01-06 CommScope Technologies LLC Digital repeater system

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DD105697A5 (pt) * 1972-02-24 1974-05-05
NL8901032A (nl) 1988-11-10 1990-06-01 Philips Nv Coder om extra informatie op te nemen in een digitaal audiosignaal met een tevoren bepaald formaat, een decoder om deze extra informatie uit dit digitale signaal af te leiden, een inrichting voor het opnemen van een digitaal signaal op een registratiedrager, voorzien van de coder, en een registratiedrager verkregen met deze inrichting.
EP0400222A1 (en) 1989-06-02 1990-12-05 ETAT FRANCAIS représenté par le Ministère des Postes, des Télécommunications et de l'Espace Digital transmission system using subband coding of a digital signal
GB8914843D0 (en) * 1989-06-28 1989-08-16 British Aerospace A method of processing video image data for use in the storage or transmission of moving digital images
NL9100173A (nl) 1991-02-01 1992-09-01 Philips Nv Subbandkodeerinrichting, en een zender voorzien van de kodeerinrichting.
US5479447A (en) 1993-05-03 1995-12-26 The Board Of Trustees Of The Leland Stanford, Junior University Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
US5497398A (en) 1993-08-12 1996-03-05 Aware, Inc. Multi-carrier transceiver
JPH08190764A (ja) * 1995-01-05 1996-07-23 Sony Corp ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体

Also Published As

Publication number Publication date
CA2184541A1 (en) 1998-03-01
NZ334843A (en) 2000-09-29
CN1106722C (zh) 2003-04-23
US6456657B1 (en) 2002-09-24
CN1234149A (zh) 1999-11-03
JP2001507530A (ja) 2001-06-05
AU733587B2 (en) 2001-05-17
AU4007297A (en) 1998-03-19
WO1998009383A1 (en) 1998-03-05
EP0920741A1 (en) 1999-06-09

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Legal Events

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B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A, 9A E 10A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1903 DE 26/06/2007.