Wireless transmission modeling for Vehicular Ad-hoc Networks

Modeling wireless transmission in stringent networks such as VANETs is a challenging task. This requires mathematically incorporating all the environmental effects present within such a dynamics atmosphere. The key attributes to model the wireless channel are physical constraints inherent to such networks such as lack of permanent infrastructure, limited knowledge in relation to the position of vehicles as well as interference that effects the strength of receive signal at each position of vehicles. The selection of an appropriate transmission model plays a key role in the routing decisions for VANET. This paper investigates such wireless transmission models for vehicular communication. It identifies the situations where a particular model can be beneficial. The paper also provides an insight into the use of practical parameters in theoretical transmission models. An analysis of the proposed transmission model is presented. The performance of different transmission models in terms of receive signal strength (RSS) is also presented. These results help to select a transmission model that suits best to a particular VANET communication scenario.