Study of Robust Multiuser Scheduling and Power Allocation in Cell-Free MIMO Networks

arXiv (Cornell University)

Abstract

This paper introduces a robust resource allocation framework for the downlink of cell-free massive multi-input multi-output (CF-mMIMO) networks to address the effects caused by imperfect channel state information (CSI). In particular, the proposed robust resource allocation framework includes a robust user scheduling algorithm to optimize the network's sum-rate and a robust power allocation technique aimed at minimizing the mean square error (MSE) for a network with a linear precoder. Unlike non-robust resource allocation techniques, the proposed robust strategies effectively counteract the effects of imperfect CSI, enhancing network efficiency and reliability. Simulation results show a significant improvement in network performance obtained by the proposed approaches, highlighting the impact of robust resource allocation in wireless networks.

Authors 5

1. S. Mashdour

   University of York

   Affiliation as printed

   Univer- sity of York , United Kingdom, ⋆⋆ Chair of Information Theory and Data Analytics ,

2. A. R. Flores

   University of York

   Affiliation as printed

   Univer- sity of York , United Kingdom, ⋆⋆ Chair of Information Theory and Data Analytics ,

3. Shirin Salehi

   University of York

   Affiliation as printed

   Univer- sity of York , United Kingdom, ⋆⋆ Chair of Information Theory and Data Analytics ,

4. Rodrigo C. de Lamare

   Pontifícia Universidade Católica do Rio de Janeiro

   Affiliation as printed

   Centre for Telecommunications Studies , Pontifical Catholic University of Rio de Janeiro , Brazil ,

5. Anke Schmeink Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University , 52062 Aachen , Germany