NO20002138L - Digital transmission systems and methods for transmitting data with reduced NEXT - Google Patents

Digital transmission systems and methods for transmitting data with reduced NEXT

Info

Publication number
NO20002138L
NO20002138L NO20002138A NO20002138A NO20002138L NO 20002138 L NO20002138 L NO 20002138L NO 20002138 A NO20002138 A NO 20002138A NO 20002138 A NO20002138 A NO 20002138A NO 20002138 L NO20002138 L NO 20002138L
Authority
NO
Norway
Prior art keywords
methods
transmitting data
transmission systems
digital transmission
reduced next
Prior art date
Application number
NO20002138A
Other languages
Norwegian (no)
Other versions
NO20002138D0 (en
Inventor
Gunnar Bahlenberg
Daniel Bengtsson
Siwert Hokansson
Anders Isaksson
Lars-Ke Isaksson
Mikael Isaksson
Magnus Johansson
Maurtiz Lahti
Lis-Marie Ljunggren
Hans Lundberg
Tomas Nordstroem
Lennart Olsson
Sven-Rune Olofsson
Tomas Stefansson
Hans Iman
Goeran Ikvist
Per Idling
Petra Dentgen
Franck Sjoeberg
Original Assignee
Telia Ab
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 Telia Ab filed Critical Telia Ab
Publication of NO20002138D0 publication Critical patent/NO20002138D0/en
Publication of NO20002138L publication Critical patent/NO20002138L/en

Links

Classifications

    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • 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
    • H04L5/023—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Optical Communication System (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Den foreliggende oppfinnelse kombinerer fordelene med OFDD med frekvensoppdelt dupleks (FDD), og muliggjør dermed at rekkevidden for et VDSL-transmisjonssystem kan utvides. Den foreliggende oppfinnelse krever anvendelse av et ekstra syklisk prefiks, og at for lengre linjer så anvendes ikke frekvensene over FDD-båndet, med andre ord betyr dette at tidssynkroniseringen utføres mellom alle sendere i ONUer og NTer, tidsprogresjon beregnes fra linjelengden, og for- skjellige sub-bærere anvendes i oppstrøms- og nedstrøms retninger.The present invention combines the advantages of OFDD with frequency divided duplex (FDD), thus enabling the range of a VDSL transmission system to be expanded. The present invention requires the use of an extra cyclic prefix, and that for longer lines the frequencies over the FDD band are not used, in other words this means that the time synchronization is performed between all transmitters in ONUs and NTs, time progression is calculated from the line length, and various sub-carriers are used in upstream and downstream directions.

NO20002138A 1997-11-03 2000-04-27 Digital transmission systems and methods for transmitting data with reduced NEXT NO20002138L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9704009A SE510641C2 (en) 1997-11-03 1997-11-03 Digital transmission in telecommunication systems
PCT/SE1998/001973 WO1999023764A1 (en) 1997-11-03 1998-10-30 Improvements in, or relating to, digital transmission

Publications (2)

Publication Number Publication Date
NO20002138D0 NO20002138D0 (en) 2000-04-27
NO20002138L true NO20002138L (en) 2000-06-29

Family

ID=20408838

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002138A NO20002138L (en) 1997-11-03 2000-04-27 Digital transmission systems and methods for transmitting data with reduced NEXT

Country Status (6)

Country Link
EP (1) EP1025654A1 (en)
JP (1) JP2001522190A (en)
EE (1) EE200000183A (en)
NO (1) NO20002138L (en)
SE (1) SE510641C2 (en)
WO (1) WO1999023764A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9900788L (en) * 1998-11-21 2000-05-22 Telia Ab Improvements to, or with respect to, VDSL transmission systems
FR2825860B1 (en) * 2001-06-06 2005-03-18 St Microelectronics Sa MASTER-SLAVE DATA TRANSMISSION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING
FR2825859A1 (en) * 2001-06-06 2002-12-13 St Microelectronics Sa METHOD FOR TRANSMITTING DATA IN MULTIPLEXING BY DIVISION OF ORTHOGONAL FREQUENCIES
FR2825861A1 (en) 2001-06-06 2002-12-13 St Microelectronics Sa FREQUENCY ALLOCATION IN ORTHOGONAL MULTIPORTER MODULATION
EP1313255A3 (en) * 2001-11-19 2006-09-20 Alcatel Method for distributing operating tones among communication loops
KR100447242B1 (en) 2002-01-31 2004-09-04 주식회사 휴커넥스 Vdsl system based on discrete multitone and method for determining the length of cyclic prefix samples on the same system
KR101585846B1 (en) * 2013-12-31 2016-01-15 주식회사 엔젤해피 Wireless trasmitting/receiving apparatus and method using orthogonal frequency division duplexing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9502775L (en) * 1995-08-04 1997-02-05 Telia Ab Procedure for suppressing near-interrogation in bidirectional communication in wireline networks

Also Published As

Publication number Publication date
EE200000183A (en) 2001-04-16
SE510641C2 (en) 1999-06-14
SE9704009D0 (en) 1997-11-03
NO20002138D0 (en) 2000-04-27
JP2001522190A (en) 2001-11-13
SE9704009L (en) 1999-05-04
EP1025654A1 (en) 2000-08-09
WO1999023764A1 (en) 1999-05-14

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