In this paper, a novel waveform with low peak-to-average power ratio (PAPR) and high robustness against phase noise (PN) is presented. It follows the discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal model. This scheme, called 3MSK, inspired by continuous-phase shift keying (CPFSK), but it uses three frequencies in baseband model – specifically, 0 ...