Channel Estimation for Intelligent Reflecting Surface Assisted Multiuser Communications
Channel Estimation for Intelligent Reflecting Surface Assisted Multiuser Communications
In the intelligent reflecting surface (IRS) assisted communication systems, the acquisition of channel state information (CSI) is a crucial impediment for achieving the passive beamforming gain of IRS because of the considerable overhead required for channel estimation. Specifically, under the current beamforming design for IRS-assisted communications, KMN + KM channel …