Adaptive Channel estimation technique for ITS-G5 inter- vehicular communication systems

In recent years, vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication systems, known as V2X technologies, have been the interest of several research works in road safety and traffic ergonomics. The evaluation of their performance is a substantial step before their probable integration and use in real systems. V2X communications build on the ITS-G5 standard which is also named as Wireless Access in Vehicular Environment (WAVE). It is in this context that we have undertaken the present study concerning the effect of transmission range on V2X communications by considering the terminal mobility. The proposed method aims to improve the way the standardized and initial estimation method suggested in the V2V standard interacts with its environment. The proposed estimation schema introduces an Adaptive Channel Estimation technique based on pilot subcarriers allocation method. The results have proven that the suggested system responds well to instances involving degradation in the communication environment.