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Collaborative spectrum sensing has been proposed to significantly improve the performance of spectrum sensing in cognitive radio networks (CRNs). However, a serious attack, called a primary user emulation attack (PUEA), could decrease the performance of collaborative spectrum sensing. In this letter, according to mobile CRNs, we propose a novel robust collaborative spectrum sensing method using physical-layer...
It is believed that effective communications are important to a successful response to emergency situations. Especially, when a terrorist attack happens, the ability to share multimedia information promptly and directly affects the ability to fight terrorists and save lives. In this paper, a novel network which is based on TD-LTE is designed for counter-terrorism emergency communication in urban area...
The adaptive fuzzy vibration control problem of large flexible truss with Hexapod active interface is studied. Firstly, independent modal space model of flexible truss with Hexapod active interface is established with energy method. A stable direct adaptive fuzzy controller is designed based on fuzzy control theory and classical adaptive control theory. Finally, flexible truss active vibration control...
A newly designed attitude sensing system is proposed to realize 3 Euler angles measurement of precision pointing hexapod. The attitude sensing system consists of biaxial inclinometer and laser displacement sensors. Due to the measurement of irrelevant degree of freedom (DOF) is avoided, the complexity and cost of the attitude sensing system is relatively low in comparison with ordinary 6 DOF measurement...
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