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- 2Spectrum Sensing
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Analysis of Non-Coherent Detectors for Opportunistic Spectrum Access in Broadband Wireless Networks
DownloadSpring 2016
The exponential growth in the number of wireless broadband service users demands an enormous increase in the available communication bandwidth, which inherently translates into an increased demand for the radio frequency spectrum. Opportunistically accessing the unused portions of the spectrum...
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Design of Asynchronous Cooperative Spectrum Sensing Scheme and Wideband Dynamic Spectrum Access Algorithm for Cognitive Radio Networks
DownloadFall 2013
Dynamic spectrum access (DSA) is a promising solution for mitigating the problem of crowded radio spectrum and enhancing the utilization efficiency of spectrum resources, making it a hot research topic. In DSA, spectrum sensing is crucial and cooperative spectrum sensing (CSS) is confirmed as a...
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Spring 2021
Due to the unprecedentedly high demand of wireless spectrum, one of the central missions in wireless networks is to technically improve the spectrum efficiency. Thus, many techniques have been devised, in which non-orthogonal multiple access (NOMA) is quite promising. In NOMA, the strengthened...
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Fall 2014
Cognitive radio has been considered as a promising way to deal with the overcrowded wireless spectrum. In cognitive radio, when licensed users (primary users) do not use their licensed spectrum, they may lease the spectrum to unlicensed users (secondary user). In a cognitive radio network, a...
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Fall 2017
Future fifth generation (5G) cellular standards incorporate new emerging technologies such as cognitive radio, device to device (D2D), interweave, energy harvesting, massive MIMO, and millimeter wave networks. However, the achievable gains of these technologies are limited by the spatial...