Robust User Scheduling and Power Allocation in Cell-Free Massive MIMO Networks

International Symposium on Wireless Communication Systems, pp. 1–6

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 7

1. Saeed Mashdour

   Pontifícia Universidade Católica do Rio de Janeiro

   Affiliation as printed

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

2. André R. Flores

   Pontifícia Universidade Católica do Rio de Janeiro

   Affiliation as printed

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

3. Shirin Salehi Aachen Chair of Information Theory and Data Analytics

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair of Information Theory and Data Analytics,Aachen,Germany,52062

4. Rodrigo C. de Lamare

   Pontifícia Universidade Católica do Rio de Janeiro

   Affiliation as printed

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

5. Anke Schmeink Aachen Chair of Information Theory and Data Analytics

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair of Information Theory and Data Analytics,Aachen,Germany,52062

6. João P. S. H. Lima

   Centre for Research and Development in Telecommunications (Brazil)

   Affiliation as printed

   CPQD,Campinas,Brazil

7. Paulo Ricardo Branco da Silva

   Centre for Research and Development in Telecommunications (Brazil)

   Affiliation as printed

   CPQD,Campinas,Brazil