@article{xu2026multi, title={Multi-Agent Reinforcement Learning for Movable Antenna-aided Cell-Free Massive MIMO Systems}, author={Bokai Xu and Jiayi Zhang and Shuaifei Chen and Ziheng Liu and Huahua Xiao and Derrick Wing Kwan Ng and Bo Ai}, journal={IEEE J. Sel. Areas Commun.}, year={to appear, 2026}, publisher={IEEE} }