Complex input to IFFT to generate real value signal
I'm simulating OFDM in Simulink with the aim of later converting it
for a DSP.
I use BPSK before the OFDM operation. With BPSK, all my binary inputs
would be converted to either 1 or -1 in the IQ spectrum. In Simulink,
the outputs contain very small values for the imaginary part i in the
range of around -16
eg, binary 1 would be 1+1.22e-16i and binary 0 would be otherwise..
Would this small imag value be sufficient to fulfill the statement and
produce a real time signal? Would it cause any problems with the DSP