Navid Hamed Azimi

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Conventional static datacenter (DC) network designs offer extreme cost vs. performance tradeoffs---simple leaf-spine networks are cost-effective but oversubscribed, while "fat tree"-like solutions offer good worst-case performance but are expensive. Recent results make a promising case for augmenting an oversubscribed network with reconfigurable inter-rack(More)
In this paper, we address the problem of preserving generated data in a sensor network in case of node failures. We focus on the type of node failures that have explicit spatial shapes such as circles or rectangles (e.g., modeling a bomb attack or a river overflow). We consider two different schemes for introducing redundancy in the network, by simply(More)
We explore the vision of an <i>all-wireless inter-rack datacenter fabric</i>. Such a fabric, if realized, can offer operator the ability to dynamically reconfigure the network topology to adapt to future traffic demands while eliminating concerns related to cabling complexity. A key enabler for our vision is the use of free space optical (FSO) technology(More)
—In this work, we address the problem of optimal spectrum management in continuous frequency domain in multiuser interference channels. The objective is to maximize the weighted sum of user capacities. Our main results are as follows: (i) For frequency-selective channels, we prove that in an optimal solution, each user uses maximum power; this result also(More)
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