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In this paper, we consider the existence and uniqueness of positive solutions to fractional integro-differential equations by using mixed monotone operator. On this basis, we investigate the control problem of positive solutions to our equation and obtain the existence condition of an optimal control that minimizes the nonlinear cost functional.
This paper studies the detection of the primary signal under noise uncertainty. A coherent MAC (Multiple Access Control) cooperative sensing scheme is proposed, adopted dual-threshold detection determined by the noise uncertainty range. Using the one-bit hard combine make the cooperative overhead reduce from O(N) to O(1). Simulation shows that the proposed method is superior to the traditional collaborative...
Time delay is a kind of common nonlinearity, which is consisted in many parts of suspension system of high speed maglev train.In this paper, the dynamic behavior of suspension system of maglev train with time-delayed velocity and acceleration feedback signal is considered with rigid guideway. Taking time delay as its bifurcation parameter, the condition with which the Hopf bifurcation may occur is...
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