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In wireless sensor networks, nodes are power-limited, hence, we need to save the energy of nodes to guarantee the operations of the network. In this paper, the energy consumption of nodes in the process of node location estimation is reduced by allocating the transmission power of the anchors. Based on the mathematical model of Direction of Arrival (DoA) estimation error variance as a function of...
Node localization plays a fundamental role in wireless sensor networks (WSNs). The distance vector hop (DV-Hop) algorithm is one of the best localization algorithms because of its low complexity, low cost, and simplicity. However, the localization accuracy can be poor when the number of anchor nodes is low. To improve this accuracy, a weighted DV-Hop algorithm based on the received signal strength...
One of the key methods for the optimization of parallel processing in a program is task scheduling. This intends to minimize implementation time for the entire program by determining schedule for optimally allocating tasks, which are processing units comprising the program, to available processor elements into pieces. Due to complexity of calculation and being a large-scale problem, the optimization...
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