Novel Time Division Duplex Schemes

This study investigates the benefits of time division duplex (TDD) and intelligent reflecting surfaces (IRSs) in next-generation wireless communication systems. The first part focuses on combining centralized dynamic-TDD with interference alignment (IA) to optimize performance in a wireless network. The proposed scheme achieves significant gains over existing methods. The second part addresses channel estimation in holographic massive MIMO systems, proposing a channel estimation scheme that outperforms benchmark methods in a poor scattering environment. Lastly, the study proposes a localization scheme utilizing multiple intelligent reflecting surfaces (IRSs) and a parametric physical channel model, demonstrating accurate localization in a challenging environment.