BR9709664A - Process, and, apparatus for implementing a bidirectional wire-connected transmission connection - Google Patents

Process, and, apparatus for implementing a bidirectional wire-connected transmission connection

Info

Publication number
BR9709664A
BR9709664A BR9709664-4A BR9709664A BR9709664A BR 9709664 A BR9709664 A BR 9709664A BR 9709664 A BR9709664 A BR 9709664A BR 9709664 A BR9709664 A BR 9709664A
Authority
BR
Brazil
Prior art keywords
transmission connection
sub
implementing
transmission
bands
Prior art date
Application number
BR9709664-4A
Other languages
Portuguese (pt)
Inventor
Jari Lindholm
Antti Tommiska
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of BR9709664A publication Critical patent/BR9709664A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • 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
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
    • H04B2215/068—Reduction of clock or synthesizer reference frequency harmonics by avoiding a reception frequency range

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Communication Cables (AREA)
  • Communication Control (AREA)
  • Telephonic Communication Services (AREA)

Abstract

"PROCESSO, E, APARELHO PARA IMPLEMENTAR UMA CONEXãO DE TRANSMISSãO LIGADA A FIO BIDIRECIONAL". A presente invenção refere-se a um processo e a um aparelho para implementar uma conexão de transmissão ligada a fio, especialmente uma conexão de transmissão VDSL. A conexão de transmissão é implementada em forma elétrica, de maneira que uma faixa de freq³ência separada seja reservada para um ou outra direção de transmissão. Para se permitir a filtração eficaz de interferências de radiofreq³ência pelo uso de um aparelho tão simples quanto possível, a faixa de freq³ência da linha de transmissão (13) é dividida em subfaixas limitadas por faixas de freq³ência de radioamador internacionais (AB1...AB6) e a conexão de transmissão é implementada em pelo menos algumas dessas subfaixas (a) pela geração para cada subfaixa a ser usada de uma onda portadora com seu próprio modulador e (b) pela divisão dos bits da corrente de bits (DATA-IN) a ser transmitidas entre os moduladores da direção de transmissão em questão, de modo que cada onda portadora seja modulada com alguns desse bits."PROCESS, E, APPLIANCE TO IMPLEMENT A TRANSMISSION CONNECTION CONNECTED TO BIDIRECTIONAL WIRE". The present invention relates to a method and an apparatus for implementing a wire-connected transmission connection, especially a VDSL transmission connection. The transmission connection is implemented electrically, so that a separate frequency range is reserved for one or the other transmission direction. In order to allow effective filtering of radio frequency interference by using a device as simple as possible, the frequency range of the transmission line (13) is divided into sub-bands limited by international radio frequency bands (AB1 ... AB6) and the transmission connection is implemented in at least some of these sub-bands (a) by generating for each sub-range to be used a carrier wave with its own modulator and (b) by dividing the bits of the bit stream (DATA-IN) a be transmitted between the modulators of the transmission direction in question, so that each carrier wave is modulated with some of these bits.

BR9709664-4A 1996-06-07 1997-05-09 Process, and, apparatus for implementing a bidirectional wire-connected transmission connection BR9709664A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI962362A FI962362A0 (en) 1996-06-07 1996-06-07 Foerfarande och anlaeggning Foer genomfoerande av en tvaodbaserad oeverfoeringsfoerbindelse
PCT/FI1997/000279 WO1997048206A1 (en) 1996-06-07 1997-05-09 Method and apparatus for implementing a wireline transmission connection

Publications (1)

Publication Number Publication Date
BR9709664A true BR9709664A (en) 2000-05-02

Family

ID=8546156

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9709664-4A BR9709664A (en) 1996-06-07 1997-05-09 Process, and, apparatus for implementing a bidirectional wire-connected transmission connection

Country Status (12)

Country Link
EP (1) EP0906676A1 (en)
JP (1) JP2000512450A (en)
AU (1) AU724605B2 (en)
BR (1) BR9709664A (en)
CA (1) CA2257799A1 (en)
CZ (1) CZ288913B6 (en)
FI (1) FI962362A0 (en)
HU (1) HUP0001983A3 (en)
IL (1) IL127362A0 (en)
NZ (1) NZ333199A (en)
PL (1) PL182887B1 (en)
WO (1) WO1997048206A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998052297A2 (en) * 1997-05-15 1998-11-19 Spectraplex, Inc. Parallel transmission method with diverse physical channel allocation
FI972346A (en) 1997-06-02 1998-12-03 Nokia Telecommunications Oy Method and apparatus for making transmission connection
AT407684B (en) * 1997-12-23 2001-05-25 Ericsson Austria Ag FILTER ARRANGEMENT
FI105973B (en) * 1998-11-19 2000-10-31 Tellabs Oy A method for determining the frequency bandwidth of modems employing a multicarrier system and a system employing the method
DE19926699C2 (en) 1999-06-11 2003-10-30 Vacuumschmelze Gmbh High-pass branch of a crossover for ADSL systems
JP2002077084A (en) * 2000-09-04 2002-03-15 Matsushita Electric Ind Co Ltd Signal distribution system, transmitter, receiver, medium and information assembly
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
US8175190B2 (en) 2005-07-27 2012-05-08 Qualcomm Atheros, Inc. Managing spectra of modulated signals in a communication network
EP2337245B1 (en) * 2009-12-17 2013-04-10 Alcatel Lucent Optical OFDM transmission having a variable transmission rate
EP2940934B8 (en) * 2014-04-28 2018-05-16 Alcatel Lucent Distribution point unit, and method and system for data transmission over a wired shared medium to a plurality of users

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
IT1273793B (en) * 1994-02-22 1997-07-10 Italtel Spa ORTHOGONAL FREQUENCY DIVISION MULTIPLATION COMPOSITE SYSTEM (OFDM) FOR THE TRANSMISSION OF DATA SEQUENCES
US5519731A (en) * 1994-04-14 1996-05-21 Amati Communications Corporation ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise

Also Published As

Publication number Publication date
EP0906676A1 (en) 1999-04-07
HUP0001983A3 (en) 2002-01-28
WO1997048206A1 (en) 1997-12-18
JP2000512450A (en) 2000-09-19
CA2257799A1 (en) 1997-12-18
IL127362A0 (en) 1999-10-28
AU724605B2 (en) 2000-09-28
HUP0001983A2 (en) 2000-10-28
PL182887B1 (en) 2002-03-29
NZ333199A (en) 2000-05-26
PL330924A1 (en) 1999-06-07
FI962362A0 (en) 1996-06-07
CZ288913B6 (en) 2001-09-12
CZ399398A3 (en) 1999-08-11
AU2702397A (en) 1998-01-07

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]