Hi Rajguru,
Thanks for replying.
I am aware of those pilots and training symbols. I once somewhere saw that the new OFDM component is completely re-written. Moreover in the simulation files I have attached, these things doesnot seem to be problem because as seen in the OS12 component the BER rate for transmission distance of 100KM the BER was 0, same is the case with OS13 block. But what difference I saw was in the RF spectrum analyzer outputs at both the designs. Do you have any answer for that?