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

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 robu...

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Bibliographic Details
Published in:International Symposium on Wireless Communication Systems pp. 1 - 6
Main Authors: Mashdour, Saeed, Flores, Andre R., Salehi, Shirin, De Lamare, Rodrigo C., Schmeink, Anke, Lima, Joao P. S. H., Branco Da Silva, Paulo
Format: Conference Proceeding
Language:English
Published: IEEE 14.07.2024
Subjects:
cell-free
Downlink
imperfect CSI
Massive MIMO
Mean square error methods
MIMO
power allocation
robust optimization
Robustness
Scheduling algorithms
Simulation
user scheduling
Wireless networks
ISSN:2154-0225
Online Access:Get full text
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Summary: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.
ISSN:2154-0225
DOI:10.1109/ISWCS61526.2024.10639129