Dear Ahmad,
Thank you very much for your response. I believe the number of FFT points are represented as “maximum number of subcarriers” in the BER Test Set.
I do have basic familiarity with OFDM theory, but the BER Test Set calculation method is still not clear to me. To be more specific, if I want to implement an OFDM-CDMA structure, where every bit of the binary input is first multiplied by a code word, it is easy to implement the multiplication block through Matlab Component after the BER Test Set – please refer to an OFDM sample. That way, since the sequence length in the layout parameters is fixed, the overall bit rate and the input word length are reduced. However, I cannot figure out how to define the BER Test Set bit sequence the same as the Matlab Component output, so it correctly calculates the error.
Another approach is to replace the BER Test Set with a suitable program via Matlab Component, but it would then require a solid knowledge of how the BER Test Set works in OptiSystem. And that is why I started the thread.
Thank you again for helping me out.
Best regards,
Alistu