In this paper, a novel optimization model for joint beamforming and power control in the downlink (DL) of a cell-free massive MIMO (CFmMIMO) system is presented. The objective of the proposed optimization model is to minimize the maximum user interference while satisfying quality of service (QoS) constraints and power consumption limits. The proposed min-max optimization model is formulated as a mixed-integer nonlinear program, that is directly tractable. Numerical results show that the proposed joint beamforming and power control scheme is effective and outperforms competing schemes in terms of data rate, power consumption, and energy efficiency.
@article{arxiv.2107.10749,
title = {Optimal Joint Beamforming and Power Control in Cell-Free Massive MIMO Downlink},
author = {Mohamed Elwekeil and Alessio Zappone and Stefano Buzzi},
journal= {arXiv preprint arXiv:2107.10749},
year = {2021}
}
Comments
Paper accepted for presentation in IEEE SPAWC 2021. Only personal use of this material is permitted. Permission from IEEE must be obtained for any other use