Ahmad Gharanjik — accepted AI-conference papers

2016

Grab-n-Pull: An optimization framework for fairness-achieving networks

Mojtaba Soltanalian, Ahmad Gharanjik, M. R. Bhavani Shankar, Björn E. Ottersten

ICASSP 2016accepted

In this paper, we present an optimization framework for designing precoding (a.k.a. beamforming) signals that are instrumental in achieving a fair user performance through the networks. The precoding design problem in such scenarios can typically be formulated as a non-convex max-min fractional quad…

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2015

Robust precoding design for multibeam downlink satellite channel with phase uncertainty

Ahmad Gharanjik, M. R. Bhavani Shankar, Pantelis-Daniel M. Arapoglou, Mats Bengtsson, Björn E. Ottersten

ICASSP 2015accepted

In this work, we study the design of a precoder on the user downlink of a multibeam satellite channel. The variations in channel due to phase noise introduced by on-board oscillators and the long round trip delay result in outdated channel information at the transmitter. The phase uncertainty is mod…

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