Ramakrishna Janaswamy

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Topology control problems are associated with assignment of power levels to nodes of a wireless network so that the resulting graph topology satisfies certain properties. In this paper we consider the problem of power-efficient topology control with switched beam directional antennas taking into account their non-uniform radiation pattern within the(More)
Abstract Previous authors have shown that the asymptotic capacity of a multiple element antenna (MEA) system with transmit and receive antennas (termed an MEA) grows linearly with if, for all , the correlation of the fading for two antenna elements whose indices differ by remains fixed as antennas are added to the array. However, in practice, the total size(More)
The growing convergence among mobile computing devices and smart sensors boosts the development of ubiquitous computing and smart spaces, where localization is an essential part for realizing the big vision. Due to their large size, high cost, and high power consumption, the current widely accepted outdoor localization methods based on GPS and cellular(More)
We consider the problem of power-efficient topology control with switched beam directional antennas taking into account their non-uniform radiation pattern within the beamwidth. Previous work have all assumed uniform gain for these antennas. We construct optimal algorithms that take into account a model of non-uniform gain. Moreover, we argue that with such(More)