FollowSpot: Enhancing Wireless Communications via Movable Ceiling-Mounted Metasurfaces
Wenhai Lai, Kaiming Shen, Rui Zhang

TL;DR
This paper presents an efficient algorithm for optimally placing ceiling-mounted metasurfaces to maximize wireless signal quality, solving a complex nonlinear optimization problem with polynomial time complexity.
Contribution
The paper introduces a novel method that decouples placement variables, enabling global optimal solutions for MTS placement in polynomial time.
Findings
Algorithm guarantees global optimality.
Solution efficiently solves a nonlinear discrete optimization problem.
Numerical results confirm effectiveness and optimality.
Abstract
This paper studies the optimal placement of ceiling-mounted metasurfaces (MTSs) to help focus the wireless signal beam onto the target receiver, as inspired by the theatre spotlight. We assume that a total of MTSs are deployed, and that there are possible positions for each MTS. The resulting signal-to-noise (SNR) maximization problem is difficult to tackle directly because of the coupling between the placement decisions of the different MTSs. Mathematically, we are faced with a nonlinear discrete optimization problem with possible solutions. A remarkable result shown in this paper is that the above challenging problem can be efficiently solved within time. There are two key steps in developing the proposed algorithm. First, we successfully decouple the placement variables of different MTSs by introducing a continuous auxiliary variable ; the…
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Taxonomy
TopicsAdvanced Wireless Communication Technologies · Energy Harvesting in Wireless Networks · Antenna Design and Analysis
