Large Intelligent Surface-Assisted Wireless Communication Exploiting Statistical CSI

Understand

Large intelligent surface (LIS)-assisted wireless communications have drawn attention worldwide.

• With the use of low-cost LIS on building walls, signals can be reflected by the LIS and sent out along desired directions by controlling its phases, thereby providing supplementary links for wireless communication systems.
• In this study, we evaluate the performance of an LIS-assisted large-scale antenna system by formulating a tight approximation of the ergodic capacity and investigate the effect of the phase shifts on the ergodic capacity in different propagation scenarios.
• In particular, we propose an optimal phase shift design based on the ergodic capacity approximation and statistical channel state information.