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Advances in wireless communication and microelectronic devices technologies have achieved the success production of low-power micro-sensors, enabling the large scale deployment of wireless sensor networks (WSNs). In order to track objects energy efficiently in OTSNs, many methods have been proposed but the performance is still not satisfactory. In fact, improving the performance of flooding is necessary...
The use of closed-loop implantable telemetry devices is increasing as recent clinical studies have shown their efficiency and usefulness in detecting and treating various cardiac arrhythmias. In this paper, we present a single-chip closed-loop system providing closed-loop feedback of sensed cardiac patterns. This device promises more optimized stimulation parameters to cure rapid arrhythmias compared...
Location finding is a major application for indoor wireless sensor networks. Some of these applications include, but not limited to, logistic tracking for goods, monitoring of patients in hospitals, security application and location aware advertising. In practice, there are many factors such as noise, non-line of sight (NLOS) influence, device crystal clock time drift and accurate synchronisation...
Ranging and localization are some of the key applications in a wireless sensor network. Good accuracy can be obtained if the signals captured are of good qualities. In a practical scenario, crystal clock time drift in the devices in a wireless sensor network can greatly influence the ranging and localization accuracy. However, crystal clock time drift can be overcome by having multiple transmissions...
Indoor localization is becoming an important application for wireless sensor networks. In order to determine sensors location, ranging packets need to be transmitted. Therefore, a good scheduling scheme is needed in order to avoid collision during packet transmission. Current wireless cellular network allows sensors inside the network to transmit without packet collision by using frequency reuse method...
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