Abstract
Conference Title: 2016 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE) Conference Start Date: 2016, Dec. 11 Conference End Date: 2016, Dec. 13 Conference Location: Langkawi, Malaysia Accurate vehicle-positioning is an important part of intelligent transportation system (ITS). Existing positioning techniques based on Global Positioning System (GPS) are not suitable for vehicular positioning because of higher positioning errors. Recently, positioning based on vehicle-to-vehicle (V2V) and vehicle-to-roadside unit (V2R) communication has emerged as an alternative more accurate solution. In this paper, we present cooperative vehicular positioning technique that provides higher accuracy than GPS-based positioning by fusion of V2V and V2R communication information, using time-or-arrival (TOA) data. Vehicular channel model is developed considering realistic urban road scenario, using ray-tracing simulation. Path-loss and received power levels are investigated for dedicated short-range communication (DSRC) at 5.9 GHz band. Results show considerable improvements in performance and consistent error reduction of the proposed technique compared to GPS-based positioning. In addition, enhancement is achieved considering V2V along with communication with three roadside units (RSUs), compared to conventional techniques that use V2R communication with four RSUs.