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A self-calibrated centroid localization algorithm is presented for wireless sensor networks based on IEEE 802.15.4 radio standard. Beside common issues in ranging accuracy using either received signal strength (RSSI) or link quality (LQI), it is challenging to cope with the fast changing environments. Although good accuracy has been achieved with methods such as Weighted Maximum Likelihood Estimation...
In ZigBee networks, ZigBee Tree Routing (ZTR) is the simplest routing protocol with low overhead in which only parent-child links shall be used for packet transfer. However, there exist hop redundancy and traffic concentration in ZTR due to the limitation of tree topology. In this paper, we propose a novel tree-based routing algorithm, which is called Improved Shortcut Tree Routing (ISTR), to decrease...
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