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Object tracking in wireless sensor networks is to track moving objects by scattered sensors. These sensors are typically organized into a tree to deliver report messages upon detecting object's move. Existing tree construction algorithms all require a mobility profile that is obtained based on historical statistics. In this paper, we propose an analytic(More)
Object tracking in wireless sensor networks is to track mobile objects by scattered sensors. These sensors are typically organized into a tree to deliver report messages upon detecting object's move. Existing tree construction algorithms all require a mobility profile that characterizes the movement statistics of the target object. Mobility profiles are(More)
A method of input-voltage balancing of converters that have inputs connected in series and outputs in parallel is described. The proposed method maintains balance of input voltages by using the voltage-control loop of one converter to regulate the output voltage and by using the voltage-control loop in the remaining converters to regulate their respective(More)
The multiband orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) system suffered from the narrowband interference (NBI) due to the presence of coexistence communication system, such as worldwide interoperability for microwave access (WiMAX). If we deal with the NBI before the receiver, the performance of MB-OFDM UWB system can be(More)
Virtual reality may provide reliable simulation for object interactions, when embedding virtual objects with artificial attributes to emulated physical and mechanical properties. This paper presents an attributed boundary model (ABM) that emulates realtime and realistic deformations for VR applications. In the ABM, the physical, mechanical, topological and(More)
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