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pro vyhledávání: '"Karetsos, G. T."'
We devise a cross-layer design (CLD) of carrier sensing multiple access with collision avoidance (CSMA/CA) at the medium access control (MAC) layer with spectrum sensing (SpSe) at the physical layer for cognitive radio networks (CRNs). The proposed C
Externí odkaz:
http://arxiv.org/abs/1312.2188
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:
http://arxiv.org/abs/1304.0732
We propose a joint optimal power allocation and sensing threshold selection for capacity maximization at the secondary user (SU) in spectrum sharing (SS) cognitive radio networks (CRNs). Hence, both optimal power allocation (OPA) and spectrum sensing
Externí odkaz:
http://arxiv.org/abs/1212.0239
Opportunistic spectrum access is based on channel state information and can lead to important performance improvements for the underlying communication systems. On the other hand adaptive modulation is also based on channel state information and can
Externí odkaz:
http://arxiv.org/abs/1210.6910
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