SE9704009L - Digital transmission in telecommunication systems - Google Patents

Digital transmission in telecommunication systems

Info

Publication number
SE9704009L
SE9704009L SE9704009A SE9704009A SE9704009L SE 9704009 L SE9704009 L SE 9704009L SE 9704009 A SE9704009 A SE 9704009A SE 9704009 A SE9704009 A SE 9704009A SE 9704009 L SE9704009 L SE 9704009L
Authority
SE
Sweden
Prior art keywords
digital transmission
telecommunication systems
present
stream
fdd
Prior art date
Application number
SE9704009A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE510641C2 (en
SE9704009D0 (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
Priority to EEP200000183A priority patent/EE200000183A/en
Priority to JP2000519509A priority patent/JP2001522190A/en
Priority to PCT/SE1998/001973 priority patent/WO1999023764A1/en
Priority to EP98953128A priority patent/EP1025654A1/en
Publication of SE9704009L publication Critical patent/SE9704009L/en
Publication of SE510641C2 publication Critical patent/SE510641C2/en
Priority to NO20002138A priority 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

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 (6)

Application Number Priority Date Filing Date Title
SE9704009A SE510641C2 (en) 1997-11-03 1997-11-03 Digital transmission in telecommunication systems
EEP200000183A EE200000183A (en) 1997-11-03 1998-10-30 Digital broadcasting or related enhancements
JP2000519509A JP2001522190A (en) 1997-11-03 1998-10-30 Improvements in or related to digital transmission
PCT/SE1998/001973 WO1999023764A1 (en) 1997-11-03 1998-10-30 Improvements in, or relating to, digital transmission
EP98953128A 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 methods for transmitting data with reduced NEXT

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
SE9704009D0 SE9704009D0 (en) 1997-11-03
SE9704009L true SE9704009L (en) 1999-05-04
SE510641C2 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 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
FR2825861A1 (en) 2001-06-06 2002-12-13 St Microelectronics Sa FREQUENCY ALLOCATION IN ORTHOGONAL MULTIPORTER MODULATION
FR2825859A1 (en) * 2001-06-06 2002-12-13 St Microelectronics Sa METHOD FOR TRANSMITTING DATA IN MULTIPLEXING BY DIVISION OF ORTHOGONAL FREQUENCIES
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
SE510641C2 (en) 1999-06-14
NO20002138L (en) 2000-06-29
NO20002138D0 (en) 2000-04-27
WO1999023764A1 (en) 1999-05-14
JP2001522190A (en) 2001-11-13
EP1025654A1 (en) 2000-08-09
SE9704009D0 (en) 1997-11-03
EE200000183A (en) 2001-04-16

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