WO2001035561A1 - Systeme de transmission numerique a porteuse multiple mettant en oeuvre un transmultiplexeur oqam - Google Patents

Systeme de transmission numerique a porteuse multiple mettant en oeuvre un transmultiplexeur oqam Download PDF

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Publication number
WO2001035561A1
WO2001035561A1 PCT/US2000/042048 US0042048W WO0135561A1 WO 2001035561 A1 WO2001035561 A1 WO 2001035561A1 US 0042048 W US0042048 W US 0042048W WO 0135561 A1 WO0135561 A1 WO 0135561A1
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WO
WIPO (PCT)
Prior art keywords
subchannel
signal
equalizer
receiver
emitter
Prior art date
Application number
PCT/US2000/042048
Other languages
English (en)
Inventor
Maurice Bellanger
Tich Dao
Original Assignee
Maurice Bellanger
Tich Dao
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 Maurice Bellanger, Tich Dao filed Critical Maurice Bellanger
Priority to US10/111,821 priority Critical patent/US7072412B1/en
Priority to EP00989764A priority patent/EP1232593A4/fr
Publication of WO2001035561A1 publication Critical patent/WO2001035561A1/fr

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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/26416—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • 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
    • H04L27/26534—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/2654—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • 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
    • H04L27/2697—Multicarrier modulation systems in combination with other modulation techniques

Definitions

  • a second approach aims at overcoming some of the OFDM/DMT limitations through the use of more sophisticated transforms than the FFT, namely, lapped transforms and wavelet transforms.
  • the idea is to improve the separation between carriers, or subchannels.
  • S.D.Sandberg and M.A.Tzannes « Overlapped Discrete Multitone Modulation for High Speed Copper Wire Communications » IEEE-JSAC, Vol.13, N°9, Dec. 1995.
  • the lapped and wavelet approaches still retain some of the crucial OFDM/DMT limitations and particularly the time synchronization requirements.
  • FIG. 1 is a simplified schematic block diagram of a multicarrier transmission system, in accordance with the present invention
  • the serial-to-parallel converter 110 splits the input bit stream d(n) into as many substreams as used subchannels and, for each substream, constitutes groups of bits di, under the control of the external signal scdatar, to feed the OQAM modulator 120.
  • An additional external signal denoted « timing 1/64 » in FIG. 2, is used to insert a reference pattern in the signal sequence as will be explained below and it is fed to both blocks serial/parallel converter and OQAM modulator.
  • the gain is updated at the beginning of the superframe, using the first two samples, denoted yi (n) and yi(n+l) .
  • the following matrix system is solved in the least squares sense.
  • the quantity El(p) is computed every superframe and it is representative of the total distortion plus noise power present in the subchannel, before fine equalization.
  • the quantity E2 (n) is computed at the rate 8 kHz and it is representative of the noise power in the subchannel. In normal operation, with the above equations (13) and (14), E2 (n) is smaller than El(p) and the difference depends on the improvement brought by the fine equalizer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Selon l'invention, un émetteur convertit un train de données d'entrée série en un jeu de sous-trains parallèles. Un modulateur OQAM (120) reçoit et transmet chaque sous-train à une entrée d'un banc de filtrage de synthèse (130). Une ou plusieurs entrées de synchronisation du banc de filtrage reçoivent un signal OQAM véhiculant une séquence de données qui contient les configurations de synchronisation de trame, de supertrame et d'hypertrame et qui indique également le nombre de bits affectés à chaque sous-voie. Un récepteur (200) comprend un banc de filtrage d'analyse (210) qui décompose le signal à porteuse multiple en un jeu de signaux élémentaires pour chaque sous-voie. Un bloc de traitement de synchronisation (270) reçoit la ou les sorties du banc de filtrage pour la ou les sous-voies de synchronisation. Ce bloc (270) comprend une première cascade de blocs qui commandent les instants d'échantillonnage du récepteur ainsi qu'une deuxième cascade de blocs qui extraient les configurations de synchronisation et les données d'affectation de bits de sous-voie. D'autres sorties du banc de filtrage sont chacune couplées à un égaliseur de sous-voie en cascade (220) suivi d'un extracteur de données (230) et d'un convertisseur parallèle-série (240).
PCT/US2000/042048 1999-11-09 2000-11-09 Systeme de transmission numerique a porteuse multiple mettant en oeuvre un transmultiplexeur oqam WO2001035561A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/111,821 US7072412B1 (en) 1999-11-09 2000-11-09 Multicarrier digital transmission system using an OQAM transmultiplexer
EP00989764A EP1232593A4 (fr) 1999-11-09 2000-11-09 Systeme de transmission numerique a porteuse multiple mettant en oeuvre un transmultiplexeur oqam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9914036A FR2800954B1 (fr) 1999-11-09 1999-11-09 Systeme de transmission numerique multiporteuse utilisant un transmultiplexeur oqam
FR99/14036 1999-11-09

Publications (1)

Publication Number Publication Date
WO2001035561A1 true WO2001035561A1 (fr) 2001-05-17

Family

ID=9551884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042048 WO2001035561A1 (fr) 1999-11-09 2000-11-09 Systeme de transmission numerique a porteuse multiple mettant en oeuvre un transmultiplexeur oqam

Country Status (3)

Country Link
EP (1) EP1232593A4 (fr)
FR (1) FR2800954B1 (fr)
WO (1) WO2001035561A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006527963A (ja) * 2003-06-18 2006-12-07 松下電器産業株式会社 ウェーブレット変換を使用してディジタルマルチキャリア信号を受信する方法と装置
US7590185B2 (en) 2002-09-25 2009-09-15 Panasonic Corporation Communication apparatus
US7869497B2 (en) 2002-08-30 2011-01-11 Nxp B.V. Frequency-domain decision feedback equalizing device and method
CN106302300A (zh) * 2015-06-24 2017-01-04 北京三星通信技术研究有限公司 一种基于滤波器组多载波系统的信号发送和接收的方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4161693B2 (ja) * 2002-11-25 2008-10-08 松下電器産業株式会社 マルチキャリア送信装置およびマルチキャリア受信装置ならびにマルチキャリア通信装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853802A (en) * 1987-10-28 1989-08-01 International Business Machines Corporation Single stage feedforward equalizer
US5644596A (en) * 1994-02-01 1997-07-01 Qualcomm Incorporated Method and apparatus for frequency selective adaptive filtering
US6047025A (en) * 1998-02-13 2000-04-04 Motorola, Inc. Method and apparatus for equallization in an asymmetric digital aubscriber line communications system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1210877A (fr) * 1983-08-04 1986-09-02 Nec Corporation Methode de synchronisation des canaux paralleles d'un systeme de transmission de donnees paralleles multiplexees orthogonalement et egaliseur automatique ameliore pour ce systeme
JPS6052147A (ja) * 1983-09-01 1985-03-25 Nec Corp タイミング同期方式
IT1281389B1 (it) * 1995-11-03 1998-02-18 Dante Tognetti Metodo per ottenere automaticamente in forma chiusa i coefficienti di una rete equalizzatrice in un sistema di trasmissione di dati
WO1998021861A1 (fr) * 1996-11-08 1998-05-22 France Telecom Construction de signaux pour transmission multiporteuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853802A (en) * 1987-10-28 1989-08-01 International Business Machines Corporation Single stage feedforward equalizer
US5644596A (en) * 1994-02-01 1997-07-01 Qualcomm Incorporated Method and apparatus for frequency selective adaptive filtering
US6047025A (en) * 1998-02-13 2000-04-04 Motorola, Inc. Method and apparatus for equallization in an asymmetric digital aubscriber line communications system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1232593A4 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7869497B2 (en) 2002-08-30 2011-01-11 Nxp B.V. Frequency-domain decision feedback equalizing device and method
US7590185B2 (en) 2002-09-25 2009-09-15 Panasonic Corporation Communication apparatus
CN101764774A (zh) * 2002-09-25 2010-06-30 松下电器产业株式会社 小波多载波通信设备
CN101764774B (zh) * 2002-09-25 2013-05-08 松下电器产业株式会社 小波多载波通信设备
JP2006527963A (ja) * 2003-06-18 2006-12-07 松下電器産業株式会社 ウェーブレット変換を使用してディジタルマルチキャリア信号を受信する方法と装置
US7760810B2 (en) 2003-06-18 2010-07-20 Panasonic Corporation Receiver and method for digital multi carrier transmission
JP4658042B2 (ja) * 2003-06-18 2011-03-23 パナソニック株式会社 ウェーブレット変換を使用してディジタルマルチキャリア信号を受信する方法と装置
CN106302300A (zh) * 2015-06-24 2017-01-04 北京三星通信技术研究有限公司 一种基于滤波器组多载波系统的信号发送和接收的方法及装置

Also Published As

Publication number Publication date
FR2800954A1 (fr) 2001-05-11
EP1232593A1 (fr) 2002-08-21
EP1232593A4 (fr) 2003-01-22
FR2800954B1 (fr) 2001-12-28

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