Event-triggered H∞ filtering over wireless sensor networks under unknown periodic DoS jamming attacks

This paper investigates event-triggered H∞ filtering problem over wireless sensor networks under unknown periodic Denial-of-Service (DoS) jamming attacks. Firstly, a novel event-triggered mechanism is introduced to determine whether sensor's current sampled-data should be transmitted to reduce the communication burden for filter design. Secondly, based this event-triggered scheme, the filtering error system, which includes the unknown periodic DoS jam­ming attacks, is transformed into a switched system. By using time-varying Lyapunov-krasovskii functional method, sufficient conditions are derived such that the filtering error system is globally exponential stability(GES) and satisfies the prescribed H∞ performance. Thirdly, the co-design method for the filter parameters and triggering parameters can be formulated by solving a set of LMIs. Finally, the effectiveness of the proposed method is demonstrated by a practical example.

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