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In this paper, we consider a multi-input-multi-output cognitive radio (MIMO-CR) system which consists of one secondary user (SU) and one secondary destination (SD), in which one eavesdropper (E) attempts to tap the information from SU to SD. All of the aforementioned nodes are equipped with multiple antennas. For enhancing physical layer security, we propose so-called optimal antenna selection (OAS)...
In this paper, we consider a multiple-input–multiple-output (MIMO) system consisting of one source, one destination, and one eavesdropper, where each node is equipped with an arbitrary number of antennas. To improve the security of source–destination transmissions, we investigate the antenna selection at the source and propose the optimal antenna selection (OAS) and suboptimal antenna selection (SAS)...
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