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The synthesis of frequency diverse arrays (FDAs) able to achieve time-invariant spatial focusing performance in the short-range is addressed. Two time-modulated optimized frequency offset schemes are presented that allow focusing the energy at a single target location and multiple target locations, respectively. A set of numerical examples is reported and discussed to validate the effectiveness of...
It is a common problem for Wireless LAN (WLAN) users when they face more than one available Access Point (AP): which one may serve them better? In the real world, most WLAN devices and users select the AP by Received Signal Strength (RSS), which doesn't consider the load of APs. Therefore, the RSS-based scheme may result in load imbalance and utilization degradation. This paper proposes a simple scheme...
This paper proposes a novel network event correlation approach based on set covering. Firstly, we present a triple-layer belief network FPM by considering alarm loss and spurious faults into the bipartite graph FPM which used by IHU algorithm, then present the measurement of fault hypothesis. On basic of this model, we present a recursive algorithm for creating fault hypotheses. Compared with the...
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