naa a22 4500 510791581 CHVBK 20180411083321.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0795-z doi (NATIONALLICENCE)springer-10.1007/s11277-012-0795-z Connectivity Analysis of Vehicular Ad Hoc Networks from a Physical Layer Perspective [Elektronische Daten] [P. Neelakantan, A. Babu] This paper investigates the network connectivity properties of a vehicular ad hoc network (VANET) from a physical layer perspective. Specifically, we investigate the minimum transmit power used by all vehicles, sufficient to guarantee network connectivity. As opposed to the conventional graph-theoretic approach, in this paper, the network connectivity problem is analyzed according to a physical layer-based quality of service constraint. Under this approach, a multi-hop path joining a pair of vehicles in a VANET is said to be connected if and only if the average route BER meets a target requirement. We derive closed form analytical expression for the minimum transmit power sufficient to ensure network connectivity. We also derive analytical expression for the maximum number of hops, a packet can traverse satisfying the route BER constraint, for a given transmit power. The validity of our theoretical analysis is verified by extensive simulation studies. The analysis provides a framework for investigating the impact of traffic dependent parameters such as vehicle arrival rate, vehicle density, mean and standard deviation of vehicle speed, highway length and physical layer-based parameters such as path loss exponent, fading factor, Doppler spread, and data rate on VANET connectivity characteristics. Springer Science+Business Media, LLC., 2012 Connectivity nationallicence Fading channels nationallicence Highway nationallicence Route bit error rate nationallicence Vehicular ad hoc network nationallicence Transmit power nationallicence Neelakantan P. National Institute of Technology, Calicut, India aut Babu A. National Institute of Technology, Calicut, India aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 45-70 0929-6212 71:1<45 2013 71 11277 https://doi.org/10.1007/s11277-012-0795-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0795-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Neelakantan P. National Institute of Technology, Calicut, India aut NATIONALLICENCE 700 1- Babu A. National Institute of Technology, Calicut, India aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 45-70 0929-6212 71:1<45 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer