OTFS waveforms are considered in general for Beyond 5G communications. With aid of OFDM technology, the multipath fading channel is converted into flat fading channel. However what if the channel is fast changing or having doppler spread( High Delay Doppler i.e. time varying and moving: vehicle to vehicle or millimeter wave frequency band channel). In such scenario, SFFT (Symplectic Fast Fourier Transform: Time frequency localization or more specifically time localized frequency information) along with legacy OFDM converts the highly varying delay doppler wireless channel into sparse channel having few coefficients. The attached code( after running it will generate two plots) represents that during trans-receive of a signal over a wireless channel using OTFS waveform(ISFFT+ Legacy OFDM+SFFT), the wireless channel undergoes two transformations. The first plot represents how the channel coefficients are having distinct values along both time and frequency axes(Only OFDM transformation). On the other hand after undergoing through OTFS transformation (OFDM+SFFT) as in plot 2, the same channel which is high delay doppler having distinct coefficients (Require more storage and exact value to decode), results in sparse channel (Less coefficients to represent the same channel). This plots indirectly suggests that less pilots are required to estimate the same high delay doppler channel compared to OFDM systems.