Henry Ponti Medeiros

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This paper presents a lightweight data compression method for wireless sensor networks monitoring environmental parameters with low resolution sensors. Instead of attempting to devise novel ad hoc algorithms, we show that, given general knowledge of the parameters that must be monitored, it is possible to efficiently employ conventional Huffman coding to(More)
This article analyzes wireless communication protocols that could be used in healthcare environments (e.g., hospitals and small clinics) to transfer real-time medical information obtained from noninvasive sensors. For this purpose the features of the three currently most widely used protocols-namely, Bluetooth(®) (IEEE 802.15.1), ZigBee (IEEE 802.15.4), and(More)
This paper studies the performance of asynchronous consensus algorithms in wireless sensors networks (WSNs). The application of such distributed consensus algorithms for the estimation of parameters or detection of events in WSNs has attracted increased attention recently. In this work the reliability of the wireless links between nodes is modeled by the(More)
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