Hi Dhananjay,
Thank you for further introducing the system. But as I perceive from a paper named “Flip-OFDM for Unipolar Communication Systems”, although in flip-OFDM all subcarriers are not used as in here, there is no mention of odd and even subcarriers. However, it’s ACO-OFDM in which odd subcarriers are only being used. Could you correct me if you think I am wrong? Thank you.