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Wireless Sensor Network (WSN) is an emerging application that has proved to be very effective due to its wide application and so has become very prominent various industries and research WSN's life is improved through clustering-based routing. Operation and network life are controlled by a large deployed sensor network whose major characteristic is self-organization and energy efficiency. The area...
The reverberation chamber has been making its way into the wireless test and measurement industry for some time now. Originally introduced for electromagnetic compatibility testing, the reverb is considered an average power measurement device, and as such, would seem to be an ideal tool for measuring total radiated power and sensitivity of wireless devices when pattern related information is not needed...
Distributed localization has been established as a key problem in wireless sensor networks and many localization algorithms have been proposed in this area. In this paper, a novel distributed TDOA passive localization method based on gossip algorithms is proposed, which can obviously improve the performance of the previous algorithms. According to our numerical results, adding the gossip mechanism...
We study bounded confidence opinion dynamics on graphs. At each iteration, agents average their opinions with those of their neighbors in the graph who have similar opinions. We show that these dynamics converge and study the limiting values. Then we propose and study a variation, called localized distributed averaging, which targets applications where nodes' opinions or measurements are only useful...
In this paper, we address the problem of orthogonal frequency-division multiplexing (OFDM) channel estimation in the presence of phase noise (PHN) and carrier frequency offset (CFO). In OFDM systems, PHN and CFO cause two effects: the common phase error (CPE) and the intercarrier interference (ICI) which severely degrade the accuracy of the channel estimate. In literature, several algorithms have...
Three applications in wireless networks where model-free stochastic learning is applicable, are discussed. The learning based optimization problems are formulated and simulation results are presented. Some open issues are also discussed.
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
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