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Characterization of Carrier Sense Multiple Access in Vehicular Propagation Channels

Mittag, J.; Hartenstein, H.

Wireless communications between vehicles is considered to be one of the building blocks in order to increase the safety level offered by future intelligent transportation systems. While it sounds intuitively convincing that a periodic exchange of status information, e.g. the current position, speed and driving direction, may help to avoid dangerous traffic situations or driving maneuvers, it is not clear whether the envisioned communications system, i.e. IEEE 802.11p, is sufficiently reliable and robust. In particular, it is not clear whether the employed Carrier Sense Multiple Access (CSMA) mechanism employed at the medium access control (MAC) layer is able to coordinate concurrent access by multiple network nodes in a highly dynamic environment as intended. In this paper, we evaluate the performance of the CSMA-based coordination mechanism employed by IEEE 802.11p. The evaluation is based on a network simulation framework that emulates the signal processing steps of a transceiver and accurately models the multi-path propagation effects of the wireless vehicular radio channel. Due to this accuracy, the execution of such high fideli ... mehr

Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Steinbuch Centre for Computing (SCC)
Publikationstyp Proceedingsbeitrag
Jahr 2013
Sprache Englisch
Identifikator ISBN: 978-3-642-33373-6
KITopen ID: 1000034371
Erschienen in High Performance Computing in Science and Engineering '12 Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2012, Part IV. [Konferenz]. Ed.: W. E. Nagel
Verlag Springer, Berlin
Seiten 561-569
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