2019/10/24 by Shashank Tiwari, Suvra Sekhar Das · 1 citation
Engineering · Computer Science · #PAPR reduction in OFDM #Radar Systems and Signal Processing #Image and Signal Denoising Methods
paper · pdf · doi:10.1049/el.2019.2503
openalex publication_date 2019/10/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
Orthogonal time‐frequency space (OTFS) modulation is a recently proposed waveform for efficient data transfer in high‐speed vehicular scenario. Use of rectangular pulse shape in OTFS results in high out of band (OoB) radiation, which is undesirable for multi‐user scenarios. In this work, the authors present a circular pulse shaped framework for OTFS for reducing the OoB. The authors also design a low complexity transmitter for such a system. They argue in favour of orthogonal transmission for low complexity transceiver structure. The authors establish that frequency‐localised circulant Dirichlet pulse is one of the possible pulses having this desirable unitary property, which can reduce OoB radiation significantly (by around 50 dB) without any loss in BER. They also show that the proposed pulse‐shaped OTFS has a lower peak to average power ratio than conventional OTFS system.