Sökning: onr:"swepub:oai:DiVA.org:ltu-32965" >
Self-synchronizing ...
Self-synchronizing a DMT-based VDSL system
-
- Nilsson, Rickard (författare)
- Luleå tekniska universitet,Signaler och system
-
- Sjöberg, Frank (författare)
- Luleå tekniska universitet
-
- Isaksson, Mikael (författare)
- Luleå tekniska universitet
-
visa fler...
-
- Cioffi, J.M. (författare)
- Stanford University
-
- Wilson, S.K. (författare)
- ArrayComm, San Jose
-
visa färre...
-
(creator_code:org_t)
- Piscataway, NJ : IEEE Communications Society, 2001
- 2001
- Engelska.
-
Ingår i: Where minds meet. - Piscataway, NJ : IEEE Communications Society. ; , s. 1249-1253
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- We present an algorithm for self-synchronizing all modems in a discrete multitone (DMT)-based very high-speed digital subscriber line (VDSL) system using the Zipper duplex method. This solves the problem with non-orthogonal near-end crosstalk (NEXT) that appears in systems with unsynchronized modems. The algorithm we present runs autonomously in each VDSL-modem. It uses the auto-correlation of the DMT-signal to determine the frame-offset of other users, and adjusts the own frame-timing to be better aligned with the other users. With our method all modems will be self-synchronized to within a small fraction of the total DMT frame-length. This self-synchronization suppresses the NEXT to a level far below the background noise-floor. This means that our self-synchronized system has the same performance as a system where all modems are perfectly synchronized to a master clock
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Signalbehandling
- Signal Processing
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)