Date Added: Jul 2011
Vehicular Ad hoc NETworks (VANETs) are new technologies that offer many opportunities to wide range interesting services. Safe driving applications in Intelligent Transport System (ITS) are major applications of VANETs. In the high-speed mobility environment of VANETs, failure transmission due to change of vehicle positions, fluctuation of channel condition and blocking by large vehicles may decrease reachability of vehicle information messages for safety usage. In this paper, the authors focus on an OFDM transmission technology, which is employed in IEEE 802.11p for ITS networks. In the proposed scheme, some vehicles forward a same OFDM signal at almost same instance, which is less than a guard interval period.