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Localized topology control is attractive for generating reduced topologies with desirable features such as sparser connectivity and reduced transmit powers. In this paper, we propose an energy efficient localized topology control algorithm called X-LMST in order to achieve prolonged network lifetime. In X-LMST, each node is required to keep its one-hop neighborhood topology. Moreover, in X-LMST, a...
In this paper, we examine the energy efficiency of symmetric key cryptographic algorithms applied in wireless sensor networks (WSNs) and in our study we consider both stream ciphers and block ciphers. We derive the computational energy cost of the ciphers under consideration by comparing the number of CPU cycles required to perform encryption. After evaluating a number of symmetric key ciphers, we...
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