Let a random process consist of a sequence of pulses- find

Question

Let a random process consist of a sequence of pulses with the following properties:

(i) the pulses are rectangular of equal duration,? (with no "dead" space in between pulses),

(ii) the pulse amplitudes are equally likely to be ,

(iii) all pulses amplitudes are statistically independent, and

(iv) the various members of the ensemble are not synchronized.
 (a) Find the mean function   

(b) Find the autocorrelation function  

(c) Is this process WSS?