Hi Ranjeet,
I remember Damian mentioning about using BER test set instead of BER analyzer on several occasions, once explaining the reason to be traning symbols, so I am not sure if BER analyzer can be used in the case you have mentioned. I’d use both to find out, though.
In order to use pilot symbols, you need to use OptiSystem 13 OFDM components. OS12 OFDM components do not have such capability. You can refer to the available OFDM examples in OptiSystem 13 samples where pilot and training signaling is used.
Regards