time series prediction with wavelet transform project ??

I have a project about time series prediction by the help of wavelet transforms. this prediction has to be two parts:

1.synthetic random prediction 2.real prediction

namely, my code should contain 2 parts; for the first part synthetic (values given/taken by us) random and the other part real values prediction.

i want to find the future data looking at past data with synthetic and real prediction.

thank you for all contributions