Antenna Diversity Scheme for Multipath Mitigation in Vehicular Adhoc Networks on Urban Roads

Multipaths are prominent in Vehicular Adhoc Network (VANET) urban environment due to obstructions by buildings and other vehicular nodes. To overcome the stringent requirements of minimal latency and high reliability of VANET safety applications, physical layer must be robust, scalable and should support low latency. Multipath mitigation is important in such an environment. It has found its application in wireless local area network (WLAN) mainly having static nodes or nodes with restricted mobility but no such work in area of VANET has been focused upon as yet. In this paper we have proposed a technique for multipath mitigation through antenna diversity for VANETs on urban road scenario. Outage capacity, a major parameter for analysis of scheme, has shown an improvement of 35% over scheme without diversity, and significant improvement has been found in other parameters, such as, packet delivery ratio, end-to-end delay and throughput.