ReComm
Member level 2
Dear Friends,
I simulate the IFFT block and compare its results with the theoretical basis
but i find difference between simulation and calculation
Attached is my IFFT Simulink model and reference to
**broken link removed**
i calculate the IFFT as follows
x(0) = x(0)+x(1)+x(2)+x(3) = -1+1+1-1 = 0 (which is true in scope1- simulink)
x(1) = [x(0)-x(2)] +(-j)[x(1)-x(3)] = 1/4 (-2-j2) = -0.5-j0.5 (false -.5+j0.5)
x(2) = [x(0)+x(2)] -[(x(1)+x(3)] = -1+1-1+1 = 0 +j0(true)
x(3) = [x(0)-x(3)] +(j)[x(1)-x(3)] = 1/4 (-2+j2) = -0.5+j0.5 (false -.5-j0.5)
it appears that x(1) is x(3) is exchanged !!!! why?
Kindly advice
wait your reply,
I simulate the IFFT block and compare its results with the theoretical basis
but i find difference between simulation and calculation
Attached is my IFFT Simulink model and reference to
**broken link removed**
i calculate the IFFT as follows
x(0) = x(0)+x(1)+x(2)+x(3) = -1+1+1-1 = 0 (which is true in scope1- simulink)
x(1) = [x(0)-x(2)] +(-j)[x(1)-x(3)] = 1/4 (-2-j2) = -0.5-j0.5 (false -.5+j0.5)
x(2) = [x(0)+x(2)] -[(x(1)+x(3)] = -1+1-1+1 = 0 +j0(true)
x(3) = [x(0)-x(3)] +(j)[x(1)-x(3)] = 1/4 (-2+j2) = -0.5+j0.5 (false -.5-j0.5)
it appears that x(1) is x(3) is exchanged !!!! why?
Kindly advice
wait your reply,