Sinusoidal modeling and prediction of fast fading processes

Fast fading is a major difficulty for wireless systems operating at higher and higher carrier frequencies. As suggested by the Jakes (1974) fading simulation model, fading processes due to multipath propagation can be, by nature, modeled in baseband as a combination of multiple complex superimposed sinusoids. In this paper, starting with the observation of a flat faded and noise corrupted baseband modulated signal, we apply and modify the ROOT-MUSIC algorithm to model and further predict the complex fading process. The modeling/prediction performance is evaluated by both simulated and real-world fading data. It is shown that short-term prediction is feasible, and we conclude that the proposed approach may find many applications to improve a system´s performance under fast fading situations