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A cross-layer scheduling strategy for the downlink of a MIMO-OFDMA system with heterogeneous traffic
dc.contributor.author | Tralli, V. |
dc.contributor.author | Pérez Neira, Ana Isabel |
dc.contributor.author | Henarejos Hernández, Pol |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2010-09-22T11:06:15Z |
dc.date.available | 2010-09-22T11:06:15Z |
dc.date.created | 2009 |
dc.date.issued | 2009 |
dc.identifier.citation | Tralli, V.; Pérez, A.; Henarejos, P. A cross-layer scheduling strategy for the downlink of a MIMO-OFDMA system with heterogeneous traffic. A: COST 2100. "COST 2100". Viena: 2009. |
dc.identifier.uri | http://hdl.handle.net/2117/9025 |
dc.description.abstract | in this paper we propose and investigate a cross-layer multiuser scheduling strategy for the support of heterogeneous traffic in the downlink of a MIMO-OFDMA system. It jointly considers different objectives: maximize the sum-rate on the radio channel, ensure a fair allocation of resources among users belonging to the same traffic class, consider the dynamics of traffic sources by looking at the delay of data packets in the queues, contribute to maximize quality of service figures at the application level. To exploit temporal diversity and to reduce complexity, the ergodic weighted sum-rate is maximized and dual optimization with stochastic approximation is applied to derive on-line algorithms. The numerical results show the capability of the scheduler to allocate physical layer resources according to rate constraints imposed for each different traffic class and with fairness inside each class, even in presence of different channels conditions and different network loads. |
dc.format.extent | 1 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject.lcsh | MIMO systems |
dc.subject.lcsh | Radio--Interference |
dc.subject.lcsh | Signal theory (Telecommunication) |
dc.title | A cross-layer scheduling strategy for the downlink of a MIMO-OFDMA system with heterogeneous traffic |
dc.type | Conference report |
dc.subject.lemac | Senyal, Teoria del (Telecomunicació) |
dc.contributor.group | Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal |
dc.relation.publisherversion | http://www.cttc.es/resources/doc/091207-n-cost-fin-52014.pdf |
dc.rights.access | Open Access |
local.identifier.drac | 2811373 |
dc.description.version | Postprint (published version) |
local.citation.author | Tralli, V.; Pérez, A.; Henarejos, P. |
local.citation.contributor | COST 2100 |
local.citation.pubplace | Viena |
local.citation.publicationName | COST 2100 |