In this work, we focus on the Vehicle-to-Vehicle (V2V) radio channel characteristics of two vehicles meeting under the same direction condition and the opposite direction condition based on actual measurements. For two different conditions, we analyze and model the channel characteristics of small-scale fading distribution, Power delay profiles(PDP), received power and Doppler spread. Through the judgment of Akaike Information Criterion, it is concluded that the small-scale amplitude fading distribution has lower Rician and Weibull distributions in the case of meeting in the opposite direction. For the case of meeting in the same direction, the results of PDP and receiving energy show that there are more reflection paths and higher energy. Through the modeling of multipath model, it is proved that there is more obvious multipath. For the case of meeting in the opposite direction, there is a more obvious Rician and Weibull distribution in the small-scale amplitude characteristics, and a higher value in the Doppler spread. By comparing the results, we find that there are obvious differences in channel characteristics between the two meeting conditions. The above results can provide some reference for the application of V2V communication technology in intelligent transportation system.

在这项工作中，我们根据实际测量重点研究了在同向条件和对向条件下相遇的两辆车的车对车（V2V）无线电信道特性。对于两种不同的条件，我们对小规模衰落分布、功率延迟分布（PDP）、接收功率和多普勒扩展的信道特性进行了分析和建模。通过Akaike Information Criterion的判断，得出小尺度幅度衰落分布在相反方向相遇的情况下具有较低的Rician和Weibull分布。对于同方向相遇的情况，PDP和接收能量的结果表明反射路径更多，能量更高。通过对多径模型的建模，证明存在更明显的多径。对于相反方向相遇的情况，小尺度幅度特征有更明显的Rician和Weibull分布，多普勒扩展有更高的值。通过对比结果，我们发现两种满足条件在信道特性上存在明显差异。上述结果可为V2V通信技术在智能交通系统中的应用提供一定的参考。