Collision avoidance in TV white spaces: A cross-layer design approach for cognitive radio networks

Autor: Foukalas, F. Karetsos, G.T.

One of the most promising applications of cognitive radio networks (CRNs) is the efficient exploitation of TV white spaces (TVWSs) for enhancing the performance of wireless networks. In this paper, we propose a cross-layer design (CLD) of carrier sen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::eb5808ed99eacb3c69fa286a09a5161b
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3036031

On the performance of adaptive modulation in cognitive radio networks

Autor: Foukalas, F. Karetsos, G.T.

We study the performance of cognitive radio networks (CRNs) when incorporating adaptive modulation at the physical layer. Three types of CRNs are considered, namely opportunistic spectrum access (OSA), spectrum sharing (SS) and sensing-based SS. We o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::f3b96afc11b2442442040206ce39ac51
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3036410

Capacity optimization through sensing threshold adaptation for cognitive radio networks

Autor: Foukalas, F.T. Karetsos, G.T. Merakos, L.F.

We propose capacity optimization through sensing threshold adaptation for sensing-based cognitive radio networks. The objective function of the proposed optimization is the maximization of the capacity at the secondary user subject to transmit power

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::3f66d1b52f0840cbc4a23e2cdd7b5ab9
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3064459

Spectral efficiency of cognitive radio networks under interference constraint and QoS guarantees

Autor: Foukalas, F.T. Karetsos, G.T. Merakos, L.

We study the problem of maximizing spectral efficiency of cognitive radio network deployments subject to an interference constraint and under specific quality of service (QoS) guarantees. The interference constraint corresponds to the upper limit of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::e4910c9f48cb5e1218d507182c325b0b
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3028144

Admission control for QoS support in heterogeneous 4G wireless networks

Autor: Tragos, E.Z., Tsiropoulos, G., Karetsos, G.T., Kyriazakos, Sofoklis

Publikováno v: Tragos, E Z, Tsiropoulos, G, Karetsos, G T & Kyriazakos, S 2008, ' Admission control for QoS support in heterogeneous 4G wireless networks ', IEEE Network, vol. 22, no. 3, pp. 30-37 . https://doi.org/10.1109/MNET.2008.4519962

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0814e6696412cf220f8ef4238d052296
https://vbn.aau.dk/da/publications/ec678ec0-9857-11de-802f-000ea68e967b