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In this paper, the authors examine a cognitive MISO system with both cognitive link and primary link communicate using multiple transmission antennas. High layer information is used to predict the idle slot existing possibility and investigate the possibility of detection errors in real circumstances. How much influence of idle slot probability and detection error will bring to stability of the cognitive...
A new fractional-order chaotic system, fractional-order Lorenz-Stenflo (LS) system, is found in this paper. Chaos can exist in the fractional-order LS system with order as low as 3.6. The chaotic dynamics of this system is investigated. Then based on Laplace transformation theory, the controller of complete synchronization is designed for this system. Moreover using stability theory of linear fractional-order...
In this paper, discrete Hopfield neural networks with weight function matrix (DHNNWFM) and discrete Hopfield neural networks with weight function matrix and delay (DHNNWFMD) are introduced. And the stability properties of DHNNWFMD that weight function matrix is a symmetric function matrix are studied. And we obtain a important result that If the weight function matrix is a symmetric function matrix...
The stability analysis of discrete Hopfield neural networks(DHNNs) not only has an important theoretical significance, but also can be widely used in the associative memory, combinatorial optimization, etc. Most matrixes of DHNNs and DHNNs with delay are constant matrixes. The stability of discrete Hopfield neural networks with weight function matrix (DHNNWFM) is studied. A new stability condition...
Wang and Chen hyperchaotic systems are newly proposed continuous four-dimensional chaotic systems. According to these hyperchaotic systems, an improved generalized projected synchronization method is proposed in this paper. The stability conditions for error systems are analyzed by using stability theory of linear systems. Compared with previous chaotic synchronization methods, the improved generalized...
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