PhySim-11p: Simulation model for IEEE 802.11p physical layer in MATLAB

Abstract

We present PhySim-11p, a simulation model for the IEEE 802.11p physical layer in MATLAB. The implemented simulation obtains Packet Error Rate (PER) versus Signal-to-noise Ratio (SNR) curves for the different transmission rates allowed by the standard. The model simulates a multi-path channel with Doppler shift, which is composed of Additive White Gaussian Noise (AWGN) and frequency–time selective fading. As a use case, we present the curves of PER versus SNR obtained from our software against nine PER theoretical models. The objective is to find the theoretical model that more closely approximates the simulated results when considering transmission parameters such as the modulation scheme M and the coding rate r. Our software aims to facilitate the study of different physical layer phenoms such as amplifier effects or channel estimation and the possibility of its inclusion in network simulators. Besides, it can be easily set up to model any OFDM physical layer of IEEE 802.11 (e.g., 802.11a).

Keywords

• PER
• IEEE 802.11p
• MATLAB
• OFDM