i want to investigate the relationship between the signal 
constellation and the sinc function in OFDM signal 
i have derived like this 
 
FOR EXAMPLE i want to see the effect of 00 then 
 
in the signal constellation it can be represented like  Aexp(pi/2) in 
phase domain  and in time domain 1/(2*j)[exp(-jwt+pi/2) +exp(-jwt+pi/2)]
 
so i proceed like this 
 
  i take the integral of the function        rect(t/T) * Aexp(pi/2) *  
1/(2*j)[exp(-jwt+pi/2) +exp(-jwt+pi/2)] dt 
 
  to get a sinc function but i didnt end up with a sinc 
function ......am i wrong  somewhere with my derivation .......
 
 THANX