Simple mathscripts for discontinuous symbol-syncronized fast-convolution (FC) processing are available through the below links. Discontinuous symbol-syncronized FC tranmitter (TX) and receiver (RX) processing principles are explained in J. Yli-Kaakinen et al., “Frequency-domain signal processing for spectrally-enhanced CP-OFDM waveforms in 5G new radio,” submitted to IEEE Transactions on Wireless Communications, 2020. discoTX.m discoRX.m FFTdecomp.m