Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks
An algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. The proposed algorithm utilizes Medium Access Control layer mechanisms for message exchange between secondary nodes that operate in license exempt spectrum bands, in order to achieve interference mitigatio...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2010/458636 |
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| _version_ | 1832552894271848448 |
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| author | Andreas Merentitis Dionysia Triantafyllopoulou |
| author_facet | Andreas Merentitis Dionysia Triantafyllopoulou |
| author_sort | Andreas Merentitis |
| collection | DOAJ |
| description | An algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. The proposed algorithm utilizes Medium Access Control layer mechanisms for message exchange between secondary nodes that
operate in license exempt spectrum bands, in order to achieve interference mitigation. A fuzzy logic reasoner is
utilized in order to take into account the effect of the coexistence of a large number of users in the interference as
well as to cope for uncertainties in the message exchange, caused by the nodes' mobility and the large delays in
the updating of the necessary information. The proposed algorithm is applied in Filter Bank Multicarrier, as well
as Orthogonal Frequency Division Multiplexing systems, and its performance is evaluated through extensive
simulations that cover a wide range of typical scenarios. Experimental results indicate improved behaviour
compared to previous schemes, especially in the case of uncertainties that cause underestimation of the
interference levels. |
| format | Article |
| id | doaj-art-0e71023679ce4bfa8f7bbd73c0564615 |
| institution | Kabale University |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-0e71023679ce4bfa8f7bbd73c05646152025-02-03T05:57:33ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862010-01-01201010.1155/2010/458636458636Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio NetworksAndreas Merentitis0Dionysia Triantafyllopoulou1Department of Informatics and Telecommunications, University of Athens, Panepistimiopolis, Ilissia, 15784 Athens, GreeceDepartment of Informatics and Telecommunications, University of Athens, Panepistimiopolis, Ilissia, 15784 Athens, GreeceAn algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. The proposed algorithm utilizes Medium Access Control layer mechanisms for message exchange between secondary nodes that operate in license exempt spectrum bands, in order to achieve interference mitigation. A fuzzy logic reasoner is utilized in order to take into account the effect of the coexistence of a large number of users in the interference as well as to cope for uncertainties in the message exchange, caused by the nodes' mobility and the large delays in the updating of the necessary information. The proposed algorithm is applied in Filter Bank Multicarrier, as well as Orthogonal Frequency Division Multiplexing systems, and its performance is evaluated through extensive simulations that cover a wide range of typical scenarios. Experimental results indicate improved behaviour compared to previous schemes, especially in the case of uncertainties that cause underestimation of the interference levels.http://dx.doi.org/10.1155/2010/458636 |
| spellingShingle | Andreas Merentitis Dionysia Triantafyllopoulou Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks International Journal of Digital Multimedia Broadcasting |
| title | Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks |
| title_full | Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks |
| title_fullStr | Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks |
| title_full_unstemmed | Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks |
| title_short | Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks |
| title_sort | resource allocation with mac layer node cooperation in cognitive radio networks |
| url | http://dx.doi.org/10.1155/2010/458636 |
| work_keys_str_mv | AT andreasmerentitis resourceallocationwithmaclayernodecooperationincognitiveradionetworks AT dionysiatriantafyllopoulou resourceallocationwithmaclayernodecooperationincognitiveradionetworks |