Hardware-in-the-Loop Framework for Testing Wireless V2X Communication

In this paper we present a hardware-in-the-loop (HiL) framework for testing wireless vehicle-to-everything (V2X) communication hardware, i.e., modems under realistic channel conditions. The framework includes a wireless channel emulator, which is capable of emulating non-stationary wireless channels in real-time. We validate the HiL framework by comparing the frame error rate (FER) obtained via emulation with data obtained during a V2X measurement campaign using the same IEEE 802.11p based modems. To do this we acquire measured time-variant channel transfer function and FER measurements simultaneously. The results show that our HiL approach is feasible and that we can obtain FER measurements in the laboratory that closely match the measurement results obtained on the road, giving the maximal distance of 0.099 between their cumulative distribution functions.

I. Introduction

The test and verification of wireless vehicle-to-everything (V2X) communication is an important step towards enabling connected and automated vehicle applications. A future advanced driver assistance system (ADAS) will use data from other road users and the infrastructure to improve its accuracy and reliability by extending its own sensor horizon. Therefore, testing and verifying these future features under various conditions and in different scenarios in a controlled and repeatable manner is of high importance.