Analysis and Validation of a Shadowing Simulation Model Suited for Dynamic and Heterogeneous Wireless Networks

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Complete shadowing modelling is one of the key issues when performing system level simulation of wireless networks. So far, models have been defined considering fixed antenna heights and a cellular deployment of base stations over roofs. However in multi-hop networks, like vehicle-to-vehicle systems, mobile equipments can be in constant three-dimensional mobility and the height of transmitter and receiver may vary depending on the moment or the specific hop. Therefore, a new modelling approach is needed to take into account the impact of antenna height on shadowing. This paper presents and validates a shadowing simulation model based on multiple-edge diffraction. Such model provides an appropriate tool for simulating shadowing in cases where over-obstacle diffraction is the main propagation mechanism.