2134/21229 Vikas Jumba Vikas Jumba Saeedeh Parsaeefard Saeedeh Parsaeefard Mahsa Derakhshani Mahsa Derakhshani Tho Le-Ngoc Tho Le-Ngoc Resource provisioning in wireless virtualized networks via massive-MIMO Loughborough University 2016 untagged Mechanical Engineering not elsewhere classified Distributed Computing 2016-05-13 14:38:40 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Resource_provisioning_in_wireless_virtualized_networks_via_massive-MIMO/9565556 © 2015 IEEE. This letter proposes a dynamic resource provisioning scheme for an OFDMA wireless virtualized network (WVN), where one base-station equipped with a large number of antennas serves users belonging to a number of service providers via different slices. In particular, joint power, sub-carrier, and antenna allocation problems are presented for both perfect and imperfect channel knowledge cases, aiming to maximize a sum-utility while maintaining a minimum rate per slice. Subsequently, relaxation and variable transformation are applied to develop the efficient algorithm to solve the formulated non-convex, combinational optimization problem. Simulation results reveal the benefits of applying a large number of antennas in this setup and evaluate the network performance for different system conditions.