期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2015
卷号：6
期号：2
页码：127-132
语种：English
出版社：Ayushmaan Technologies
摘要：Vehicle Ad hoc Networks (VANET) emerged as a subset of the Mobile Ad hoc Network (MANET) application; it is considered to be a significant approach to the ITS (Intelligent Transportation System). VANETs are introduced to assist drivers and improve safety issues and driving comfort, as a step towards constructing a safer, smoother, cleaner and more intelligent environment. At the present time vehicles are equipped with On Board Units (OBU) this enables vehicles to sense situations affecting other vehicles and manage communications. VANET is a new communication paradigm that enables the communication between vehicles moving at high speeds on the roads. This inspired to develop several new applications like, traffic engineering, traffic management, dissemination of emergency information to avoid hazardous ituations and other user applications.802.11p, also known as WAVE, is a standard protocol intended for future traffic systems in order to support safety and commercial non-safety applications for vehicular communication. 802.11p is amended from 802.11a, and both are based on OFDM. The main difference between 802.11a and 802.11p is that 802.11p uses 10 MHz frequency bandwidth (half of bandwidth of 802.11a) in order to make the signal more robust against fading and increase the tolerance. This paper investigate the performance of 802.11p for Vehicle-to-Vehicle communication through real-world experiments using different adhoc routing protocols. We measure throughput and packet losses of 802.11pin urban environments. In addition, the performance of routing protocol with different modulations by varying the number of vehicles to evaluate the feasibility of using rate adaptation for safety V-to-V applications.
关键词：Performance;Analysis;Ad Hoc Network;AODV;DSR;DSDV; NS2
