IRS Reflection Pattern Prediction Considering Receiver's Movement Speed

The use of the intelligent reflecting surface (IRS) is being considered for wireless communications in high-frequency band. For prediction IRS reflection patterns, a method that accounts receiver movement by treating partially observed channel estimates as time series from current to certain period past has been studied. However, does not take into account speed receiver, which degrades performance when variety speeds exist. Therefore, this study, uses amplitude differences an indicator detect proposed. Numerical experiments show improvement proposed method.