TY - JOUR A2 - Panagopoulos, Athanasios AU - Ledy, Jonathan AU - Boeglen, Hervé AU - Poussard, Anne-Marie AU - Hilt, Benoît AU - Vauzelle, Rodolphe PY - 2012 DA - 2011/08/03 TI - A Semi-Deterministic Channel Model for VANETs Simulations SP - 492105 VL - 2012 AB - Today's advanced simulators facilitate thorough studies on Vehicular Ad hoc NETworks (VANETs). However the choice of the physical layer model in such simulators is a crucial issue that impacts the results. A solution to this challenge might be found with a hybrid model. In this paper, we propose a semi-deterministic channel propagation model for VANETs called UM-CRT. It is based on CRT (Communication Ray Tracer) and SCME—UM (Spatial Channel Model Extended—Urban Micro) which are, respectively, a deterministic channel simulator and a statistical channel model. It uses a process which adjusts the statistical model using relevant parameters obtained from the deterministic simulator. To evaluate realistic VANET transmissions, we have integrated our hybrid model in fully compliant 802.11 p and 802.11 n physical layers. This framework is then used with the NS-2 network simulator. Our simulation results show that UM-CRT is adapted for VANETs simulations in urban areas as it gives a good approximation of realistic channel propagation mechanisms while improving significantly simulation time. SN - 1687-5702 UR - https://doi.org/10.1155/2012/492105 DO - 10.1155/2012/492105 JF - International Journal of Vehicular Technology PB - Hindawi Publishing Corporation KW - ER -