Ανάπτυξη γεωμετρικού στοχαστικού μοντέλου διαύλου για επικοινωνίες μεταξύ οχημάτων
Vehicle-to-vehicle communications (V2V) are one of the most promising upcoming technologies for the coverage of a wide spectrum of services both at comfort level and at the level of road safety. While the study of such kind of communication is a complicated process, more and more methods are developed in order to understand them in depth. Maybe one of the greatest approaches is the study of V2V communications through geometry based stochastic channel models. Depending on the propagation parameters and the techniques which are used, more and more such models are developed with a fast pace. For this purpose and within the framework of this Master Thesis, a model that extends the classic two ring reference model was developed. After a survey into the international bibliography where a large number of such kind of models was found , it was noticed that these were applicable only to a kind of communication links where the transmission distance was fixed and maintained large. Based on this assumption, an extension of this kind of reference model into a model that would take into account the distances between the two mobile terminals, was held. In this context the different statistical properties which, consequently, arise, are studied. The development of the simulation models is used the sum-of-sinusoids method (SoS), which has been widely accepted by academia and industry. The proposed model, provides to other researchers a convenient framework and guidelines for the study of such kind geometry based stochastic model from a different perspective as well as the potential of studying a variety of propagation scenarios.