Abstract
Vehicular communications can be characterized by dynamic scenarios and relatively low antenna heights of mobile transmitters (MTs) and mobile receivers (MRs). In recent years, research on vehicle-to-vehicle (V2V) communications, which mainly focused on channel models and measurements, has been widely developed over 5G communication systems. This paper presents an overview of current practices in V2V channel modeling, investigate the channel characteristics, including spatial correlation functions (CFs) and Doppler power spectrum densities (PSDs). Moreover, we compare V2V channel models with conventional fixed-to-mobile (F2M) cellular channel models to determine their fundamental distinctions. Then, recent developments on V2V channel models for 5G systems are discussed.
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