Title: 5GWireless
SNIC Project: LiU-2018-33
Project Type: LiU Compute
Principal Investigator: Amin Ghazanfari <amin.ghazanfari@liu.se>
Affiliation: Linköpings universitet
Duration: 2018-11-26 – 2021-06-01
Classification: 20204


This work studies the transmit power optimization in a multi-cell massive multiple-input multiple-output (MIMO) system. To overcome the scalability issue of network-wide max-min fairness (NWMMF), we propose a novel power control (PC) scheme. This scheme maximizes the geometric mean (GM) of the per-cell max-min spectral efficiency (SE). To solve this new optimization problem, we prove that it can be rewritten in a convex form and then solved using standard tools. To provide a fair comparison with the available utility functions in the literature, we solve the network-wide proportional fairness (NW-PF) PC as well. The NW-PF focuses on maximizing the sum SE, thereby ignoring fairness, but gives some extra attention to the weakest users. The simulation results highlight the benefits of our model which is balancing between NW-PF and NW-MMF. To run simulation for larger network setup I need to get access to SPUR resources.