Performance Analysis of OTFS Modulation in Vehicular Networks

Consider the vehicular network comprising of a fixed source hub, a fixed destination hub with single antenna. Assume that the source-to destination Vehicle Equipment (VE) channel is modelled as Rayleigh fading distribution and Eavesdropper Vehicle (EV) channel link from Source is modelled as Nagakami fading distribution. In this paper, we newly propose Orthogonal Time Frequency Modulation (OTFS) modulation at the transmitter for high speed vehicular networks. The Significance of OTFS modulation is to multiplex the information through two dimensional symmetrical basis capacities regarding postponement and Doppler areas valuable for rapid vehicles. We infer the tight shut structure expression for ergodic secrecy capacity of the proposed system model. It is observed that analytical and simulation result showed that the secrecy capacity improved significantly when compared with the existing system models.