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Zero-range processes with decreasing jump rates exhibit a condensation transition, where a positive fraction of all particles condenses on a single lattice site when the total density exceeds a critical value. We study the onset of condensation, i.e. the behaviour of the maximum occupation number after adding or subtracting a subextensive excess mass of… (More)

- Eleni Stai, Michail Loulakis, Symeon Papavassiliou
- 2015 IEEE Wireless Communications and Networking…
- 2015

Network Utility Maximization (NUM) is often applied for the cross-layer design and optimization of wireless networks. In most approaches, the NUM framework is based on the assumption of known or ideal wireless channel conditions. However, realistic wireless channel capacities are stochastic (time-varying and random) bearing time-varying statistics,… (More)

- Eleni Stai, Michail Loulakis, Symeon Papavassiliou
- IEEE Trans. Wireless Communications
- 2015

Network Utility Maximization is often applied for the cross-layer design of wireless networks considering known wireless channels. However, realistic wireless channel capacities are stochastic bearing time-varying statistics, necessitating the redesign and solution of NUM problems to capture such effects. Based on NUM theory we develop a framework for… (More)

- Michail Loulakis
- 2008

We prove a strong form of the equivalence of ensembles for the invariant measures of zero range processes conditioned to a supercritical density of particles. It is known that in this case there is a single site that accomodates a macroscopically large number of the particles in the system. We show that in the thermodynamic limit the rest of the sites have… (More)

- Michail Loulakis
- 2004

We prove the symmetry of the diffusion coefficient that appears in the fluctuation-dissipation theorem for asymmetric simple exclusion processes. Mathematics Subject Classification (2000): Primary 60K35; secondary 82C22

- D. Cheliotis, Ioannis Kontoyiannis, Michail Loulakis, Stavros Toumpis
- 2017 IEEE International Symposium on Information…
- 2017

We study a simple one-dimensional, discrete-time network model that consists of two nodes moving on a discrete circle, changing their direction of movement randomly, and a single packet travelling in the clockwise direction, using combinations of transmissions between the two nodes (when they are co-located) and physical transports on their buffers. In this… (More)

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