An Efficient CSI Acquisition Method for Intelligent Reflecting Surface-assisted mmWave Networks

Understand

Millimeter-wave (mmWave) communication is one of the key enablers of the fifth-generation cellular networks (5G).

• However, one of the fundamental challenges of mmWave communication is the susceptibility to blockage effects.
• One way to alleviate this effect is the use of Intelligent Reflecting Surface (IRS).
• Nevertheless, due to the large number of the reflecting elements on IRS, the channel estimation turns out to be a challenging problem.