We have earlier shown that
The plot of is as shown in Figure 5. Therefore,
Remark
(1) The representation of the band-pass process in terms of the in-phase and the quadrature phasecomponents is not unique. By selecting different we can have different representations.
is as shown in Figure 5. Therefore, 
in terms of the in-phase and the quadrature phasecomponents is not unique. By selecting different 
we can have different representations.