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The localization and tracking of moving targets is a challenging task in real-world applications where a centralized management and supervision of both indoor and outdoor areas is required. Within the framework of location-based services for humans/crowd/animals/vehicles, this work is aimed at discussing the so-called semantic wireless localization approach. Towards this purpose, the key-features...
This paper estimates the feasibility of operating field sensors using otherwise unwanted radio frequency (RF) energy in a wireless ad hoc sensor network. In the traditional concept, an exposed node is kept from any communication activities during a neighbor's transmission. To save energy, the node may go to sleep mode during its inactivity period. In contrast, it is proposed that whenever a node is...
In this work we present the development and proof of concept testing of a protoype wireless e-nose (w-nose) architecture capable of mesh shaped networking. The proposed w-nose is based on a TelosB by Crossbow Inc. and custom, power aware, TinyOS based components for data gathering and local processing. Sensor nodes are equipped with a small array of nonconductive polymer/CB based chemiresistors operating...
In this paper, we address the issue of transmission power control (TPC) in wireless ad hoc networks. Power control plays an important role in energy saving and network performance enhancement. However, the existing TPC schemes either face the problem of hidden and exposed terminal or have additional hardware requirements. We propose a novel distributed power control protocol, called Receiver Initiated...
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