Multi-Agent Reinforcement Learning-Based Pilot Assignment for Cell-Free Massive MIMO Systems

• Published in: IEEE access Vol. 10; pp. 120492 - 120502
• Main Authors: Rahmani, Mostafa, Dehghani, Mohammad Javad, Xiao, Pei, Bashar, Manijeh, Debbah, Merouane
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Antennas; Cell-free massive MIMO; Contamination; Data communication; deep reinforcement learning; Fading channels; Interference; Machine learning; MIMO communication; Multiagent systems; pilot assignment; pilot contamination; Reinforcement learning; Spectral efficiency; Uplink; Wireless communication

Cell-free massive multiple-input multiple-output (CF-mMIMO) has been considered as one of the potential technologies for beyond-5G and 6G to meet the demand for higher data capacity and uniform service rate for user equipment. However, reusing the same pilot signals by several users, owing to limite...