Energy-Efficient Trajectory Design of a Multi-IRS Assisted Portable Access Point

In this article, we propose a framework for energy efficient trajectory design of an unmanned aerial vehicle (UAV)-based portable access point (PAP) deployed to serve set ground nodes (GNs). addition the PAP and GNs, system consists intelligent reflecting surfaces (IRSs) mounted on man-made structures increase number bits transmitted per Joule consumed measured as global efficiency (GEE). The GEE is designed by considering UAV propulsion consumption Peukert effect battery, which represents accurate battery discharge profile non-linear function power profile. problem solved in two phases: first, path feasible positions IRS modules are found using multi-tier circle packing method, required phase shift values calculated alternate optimization method that considers interdependence between amplitude responses element; second phase, flying velocity user scheduling novel multi-lap algorithm. Numerical evaluations show that: neglecting overestimates available flight time PAP; after certain threshold, increasing size reduces presence improves compared other baseline scenarios; saves more single-lap developed combination sequential convex programming Dinkelbach