Extension to Planar Movable-Antenna Apertures and Hardware Validation

Extend CSI-free positioning with the compositional kernelized bandit and CoMoveUCB algorithm from linear movable-antenna arrays to planar apertures, and validate the resulting approach on a hardware prototype.

Background

The paper develops CoMoveUCB for CSI-free positioning of multiple movable antennas arranged along a one-dimensional linear region. The method uses a compositional kernel that models unary and pairwise antenna-position interactions, while accounting for reachability constraints, actuation energy, and nonstationary rate feedback. The theoretical analysis and simulations are therefore limited to the linear-aperture setting and do not establish whether the framework extends to two-dimensional antenna motion.

The reported evaluation is entirely simulation-based. Consequently, the practical behavior of the proposed learning and actuation strategy under real mechanical constraints, hardware imperfections, measurement noise, and physical wireless propagation remains unresolved. The authors explicitly identify both planar-aperture extension and experimental hardware validation as open directions.