may i know what is the parameter that affecting the BER. i tried increasing the optical amplifier gain but to no avail, the BER rate stil in the range of 0.5. is there any component that can be used to dramatically increase the BER to the acceptable range?
i noticed that in the example file OFDM Coherent Detection Single Port Single Polarization 16QAM, the BER is 0.00779. is this value acceptable?