Concepts for DMT Transmission with Dynamic Carrier Allocation

Bauer, Carsten ; Schwarz, Johannes

Document Type: Conference or workshop publication
Year of publication: 2004
Book title: ISCCSP 2004 : First International Symposium on Control, Communications, and Signal Processing : 21-24 March, 2004, Hammamet, Tunesia ; [proceedings]
Page range: 381-384
Place of publication: Piscataway, NJ [u.a.]
Publishing house: IEEE Operations Center
ISBN: 0-7803-8379-6
Publication language: English
Institution: School of Business Informatics and Mathematics > Elektrotechnik (Fliege Em)
Subject: 004 Computer science, internet
Abstract: Recently, Multi-Carrier Modulation (MCM) systems have become|quite popular due to many advantages. One of the most important|features of Discrete Multi-Tone (DMT) systems is rate adaptability,|and the maximum data rate for an existing loop can be easily|determined by means of adaptive loading algorithms. However,|time-variant disturbers, e.g. narrow band interference, can lead|to a significant performance loss which may be counteracted by|decreasing the data rate. Yet dynamic rate adaption is difficult|as higher protocol layers are concerned. In this paper we present|system concepts for dynamic carrier allocation and seamless rate|adaption to mitigate the introduced performance degradation. This|includes strategies for bit swapping to maintain the current data|rate as well as dynamic rate adaption. Protocols for robust and fast exchange of allocation tables between receiver and transmitter will be presented.

Dieser Eintrag ist Teil der Universitätsbibliographie.

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