Avirup Das

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With the advent of smarter technologies in cellular networks, often the bands used for lower versions remain unoccupied. To utilize that, in this paper, a new paradigm of cognitive radio has been proposed, where the nodes of a self-organized opportunistic ad hoc network act as the secondary users (SU) to use the white spaces of the existing cellular(More)
Given a random deployment of heterogeneous mobile nodes having different sensing ranges, this paper addresses the problem of covering a region using minimum number of nodes with minimum displacement. We propose an energy-efficient and light-weight self-organized distributed greedy heuristic to maximize area coverage such that the amount of computation,(More)
With the rapid increase in vehicular traffic in urban areas, optimal use of available resources is necessary to minimize the cost while maintaining the safety, and the quality of service. For this purpose, Vehicular Ad hoc Networks (VANETs) are emerging, connecting vehicles with static road side units (RSUs) serving as a backbone. For energy efficiency,(More)
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