Low-Complexity Random Rotation-based Schemes for Intelligent Reflecting Surfaces

Understand

The employment of intelligent reflecting surfaces (IRSs) is a potential and promising solution to increase the spectral and energy efficiency of wireless communication networks.

• Despite their many advantages, IRS-aided communications have limitations as they are subject to high propagation losses.
• To overcome this, the phase rotation (shift) at each element needs to be designed in such a way as to increase the channel gain at the destination.
• However, this increases the system's complexity as well as its power consumption.