How do I know the baseband (BB) from FFT?

Hi, I have a signal in the frequency domain on the receiver side and I need to know the data that I have received to calculate the bit error rate (BER).

Answer 1

[Kaashyap Pappu]

If you have the frequency-domain samples, you can use the ifft function to get the time-domain samples. Following this, use the biterr function with you time-domain samples and the original transmitted sequence to determine the Bit-Error Rate.

Hope this helps!