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EnglishThis paper deals with the problem of finding an optimal subcarrier allocation strategy for uplink and downlink communications in an OFDMA metropolitan wireless system. In particular a two steps approach is considered; at the first step the scheduler establishes the amount of resources to assign to users on the basis of their quality of service (QoS) constraints, while, at the second step, channel conditions are used to allocate subcarriers to users. A simple strategy for choosing the appropriate modulation and coding scheme according to the channel conditions of the assigned subcarriers is also proposed.
| Titolo: | Adaptive Scheduling Algorithms for Multimedia Traffic in Wireless OFDMA Systems | |
| Autore/i: | M. Cecchi; R. Fantacci; D. Marabissi; TARCHI, DANIELE | |
| Autore/i Unibo: | ||
| Anno: | 2008 | |
| Titolo del libro: | Proceedings of IEEE Global Telecommunications Conference, 2008 | |
| Pagina iniziale: | 1 | |
| Pagina finale: | 5 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/GLOCOM.2008.ECP.997 | |
| Abstract: | This paper deals with the problem of finding an optimal subcarrier allocation strategy for uplink and downlink communications in an OFDMA metropolitan wireless system. In particular a two steps approach is considered; at the first step the scheduler establishes the amount of resources to assign to users on the basis of their quality of service (QoS) constraints, while, at the second step, channel conditions are used to allocate subcarriers to users. A simple strategy for choosing the appropriate modulation and coding scheme according to the channel conditions of the assigned subcarriers is also proposed. | |
| Data prodotto definitivo in UGOV: | 24-feb-2011 | |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
File in questo prodotto:
http://hdl.handle.net/11585/99660
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