DFT-Spread-OFDM-Based Chirp Transmission

In this study, we propose a framework for chirp-based communications by exploiting discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM). We show that well-designed frequency-domain spectral shaping (FDSS) filter DFT-s-OFDM can convert its single-carrier nature to linear combination of chirps circularly translated in the time domain. Also, properties series and Bessel function first kind, analytically obtain FDSS an arbitrary chirp. theoretically with low ripples domain result lower bit-error ratio (BER) via less noise enhancement. also address enhancement repetitions frequency. The proposed offers new way efficiently synthesize be used Internet-of-Things (IoT), dual-function radar communication (DFRC) or wireless sensing applications existing transceivers.