Fig. 8From: Adaptive CSI and feedback estimation in LTE and beyond: a Gaussian process regression approachRMSE for various observation windows and user mobility. This figure shows the computed RMSE when the training window for the GPR is varied for users moving at 5, 10 and 60 km/h. a User speed 5 km/h, b user speed 10 km/h and c user speed 60 km/hBack to article page