SE510641C2 - Digital transmission in telecommunication systems - Google Patents

Digital transmission in telecommunication systems

Info

Publication number
SE510641C2
SE510641C2 SE9704009A SE9704009A SE510641C2 SE 510641 C2 SE510641 C2 SE 510641C2 SE 9704009 A SE9704009 A SE 9704009A SE 9704009 A SE9704009 A SE 9704009A SE 510641 C2 SE510641 C2 SE 510641C2
Authority
SE
Sweden
Prior art keywords
present invention
used
stream
digital transmission
fdd
Prior art date
Application number
SE9704009A
Other languages
Swedish (sv)
Other versions
SE9704009D0 (en
SE9704009L (en
Inventor
Lennart Olsson
K-G Bahlenberg
Daniel Bengtsson
Siwert Haakansson
Anders Isaksson
L-Aa Isaksson
Mikael Isaksson
Magnus Johansson
Mauritz Lathi
Karin L-M Ljunggren
Hans Lundberg
Tomas Nordstroem
S-R Olofsson
Tomas Stefansson
Hans Oehman
S G Oekvist
Per Oedling
Petra Dentgen
Frank 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
Priority to SE9704009A priority Critical patent/SE510641C2/en
Publication of SE9704009D0 publication Critical patent/SE9704009D0/en
Publication of SE9704009L publication Critical patent/SE9704009L/en
Publication of SE510641C2 publication Critical patent/SE510641C2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/02Channels characterised by the type of signal
    • H04L5/023Multiplexing of multicarrier modulation signals

Abstract

The present invention combines the advantages of OFDD with Frequency Divided Duplex (FDD), thus enabling the reach of a vdsl transmission system to be extended. The present invention requires that: the use of an extra cyclic prefix; and for longer lines, the frequencies above the FDD band are not used, in other words. This in turn means that: time-synchronisation is performed between all transmitters in the ONUs and the NTs; timing advance is calculated from the line length; and different sub-carriers are used in up-stream and down-stream directions.
SE9704009A 1997-11-03 1997-11-03 Digital transmission in telecommunication systems SE510641C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9704009A SE510641C2 (en) 1997-11-03 1997-11-03 Digital transmission in telecommunication systems

Applications Claiming Priority (6)

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
EEP200000183A EE200000183A (en) 1997-11-03 1998-10-30 Digital transmission, or related enhancements
JP2000519509A JP2001522190A (en) 1997-11-03 1998-10-30 Digital transmission, or improvements on this
EP19980953128 EP1025654A1 (en) 1997-11-03 1998-10-30 Improvements in, or relating to, digital transmission
NO20002138A NO20002138L (en) 1997-11-03 2000-04-27 Digital transmission systems and fremgangsmÕte for Õ transmit data with reduced NEXT

Publications (3)

Publication Number Publication Date
SE9704009D0 SE9704009D0 (en) 1997-11-03
SE9704009L SE9704009L (en) 1999-05-04
SE510641C2 true SE510641C2 (en) 1999-06-14

Family

ID=20408838

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704009A SE510641C2 (en) 1997-11-03 1997-11-03 Digital transmission in telecommunication systems

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 relating to, VDSL transmission systems
FR2825859A1 (en) * 2001-06-06 2002-12-13 St Microelectronics Sa Method for transmission of data multiplexing by orthogonal frequency division
FR2825860B1 (en) * 2001-06-06 2005-03-18 St Microelectronics Sa Master-slave data transmission in orthogonal frequency division multiplexing
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 Alsthom Compagnie Generale D'electricite 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 A method of suppressing near-end crosstalk at bidirectional communication in wire mesh

Also Published As

Publication number Publication date
SE9704009D0 (en) 1997-11-03
JP2001522190A (en) 2001-11-13
NO20002138D0 (en) 2000-04-27
EE200000183A (en) 2001-04-16
SE9704009L (en) 1999-05-04
WO1999023764A1 (en) 1999-05-14
NO20002138L (en) 2000-06-29
EP1025654A1 (en) 2000-08-09

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