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Cognitive Radio (CR) is an efficient way of spectrum utilization in the way that secondary users (SU) with high bandwidth (BW) requirements such as multimedia users, can get access to the licensed frequency resources opportunistically and resolve their BW limitation. Among all the multimedia formats, JPEG2000 has many features that makes it suitable for cognitive radio networks. In this paper a channel...
Cooperative spectrum sensing (CSS) in cognitive radio networks conducts cooperation among sensing users to jointly sense the sparse spectrum and utilize available spectrums. Greedy multiple measurement vectors (MMVs) algorithm in the context of compressed sensing can ideally model the wideband CSS scenario to efficiently solve the support detection problem for identification of occupied channels....
In this paper, we investigate the performance of relay selection in an underlay cognitive radio system in the presence of primary user (PU) interference. In particular, we consider a secondary multi-relay network operating in the amplify-and-forward (AF) mode and only the “best” relay which satisfies an index of merit is selected. The proposed selection strategy takes into consideration the effect...
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