Peak to average power ratio reduction techniques based on chirp selection for single and multi‐user orthogonal chirp division multiplexing system

This article deals with peak to average power (PAPR) reduction in a single and multi-user orthogonal chirp division multiplexing (OCDM) context. Two methods for PAPR based on the selection of frequency variation (up or down) chirps are first presented user system. The technique consists considering two OCDM signals generated up down chirps, respectively, selecting one offering lowest PAPR. second method is usual clipping, that case aims reduce clipping noise. An adapted receiver presented, maximum likelihood estimation chirp. Then, general procedure transmission introduced, where sub-band available bandwidth dedicated each user, whose varies within this sub-band. Next, techniques generalised Moreover, performance analysis developed, it shown through simulations theoretical numerical results match both Nyquist rate oversampled signals. It also reduces noise, improves bit error compared only.