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EnglishThis paper addresses the problem of allocating users to radio resources (i.e., sub-carriers) in the downlink of an OFDMA cellular system. We consider a classical multi-cellular environment with a realistic interference model and a margin adaptive approach, i.e., we aim at minimizing total transmission power while maintaining a certain given rate for each user. We discuss computational complexity issues of the resulting model and present a heuristic approach that finds optima under suitable conditions, or "reasonably good" solutions in the general case. Computational experiences show that, in a comparison with a commercial state-of-the-art optimization solver, our algorithm is quite effective in terms of both infeasibilities and transmitted powers and extremely efficient in terms of CPU times. © 2009 Springer Berlin Heidelberg.
Abrardo, A., Detti, P., Nicosia, G., Pacifici, A., & Servilio, M. (2009). Optimum channel allocation in OFDMA multi-cell systems. In Network Control and Optimization, NET-COOP 2008 (pp. 103-111). Heidelberg, Germany : Springer Verlag [10.1007/978-3-642-00393-6_13].
| Autori: | ||
| Autori: | Abrardo, A; Detti, P; Nicosia, G; Pacifici, A; Servilio, M | |
| Titolo: | Optimum channel allocation in OFDMA multi-cell systems | |
| Data di pubblicazione: | 2009 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/978-3-642-00393-6_13 | |
| Settore Scientifico Disciplinare: | Settore MAT/09 - Ricerca Operativa | |
| Lingua: | English | |
| Rilevanza: | Rilevanza internazionale | |
| Tipo: | Articolo scientifico in atti di convegno | |
| Tipologia: | Contributo in libro | |
| Citazione: | Abrardo, A., Detti, P., Nicosia, G., Pacifici, A., & Servilio, M. (2009). Optimum channel allocation in OFDMA multi-cell systems. In Network Control and Optimization, NET-COOP 2008 (pp. 103-111). Heidelberg, Germany : Springer Verlag [10.1007/978-3-642-00393-6_13]. | |
| Appare nelle tipologie: | 03 - Contributo in libro |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| LNCS-NetCoop2009.pdf | Articolo principale | N/A | EmbargoOpen Access Visualizza/Apri |
http://hdl.handle.net/2108/34758
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