Adaptive Modulation over Nakagami Fading Channels
Wireless Personal Communications: An International Journal
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Principles of communication systems simulation with wireless applications
Principles of communication systems simulation with wireless applications
IEEE Transactions on Wireless Communications
Joint cross-layer scheduling and spectrum sensing for OFDMA cognitive radio systems
IEEE Transactions on Wireless Communications
IEEE 802.22: the first cognitive radio wireless regional area network standard
IEEE Communications Magazine
Cross-layer design proposals for wireless mobile networks: a survey and taxonomy
IEEE Communications Surveys & Tutorials
Cross-Layer combining of adaptive Modulation and coding with truncated ARQ over wireless links
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency
IEEE Communications Magazine
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
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Cognitive radio is considered as one of the most important enablers for achieving enhanced spectral efficiency in wireless communications. In this work, we present a cross-layer design for reliable data transmission over a cognitive radio network which combines adaptive modulation at the physical layer and hybrid automatic repeat request at the data link layer. The cognitive radio network follows the principles of opportunistic spectrum access that utilises an optimal power adaptation policy for channel allocation. The obtained numerical results denote that the considered approach achieves significant spectral efficiency improvement and therefore it could be deployed in wireless communication networks that encompass cognitive capabilities. Furthermore, we assess the introduced interference and we show that it can be kept within levels that do not jeopardise our design.