Publications:How severe is the hidden terminal problem in VANETs when using CSMA and STDMA?
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|Title||How severe is the hidden terminal problem in VANETs when using CSMA and STDMA?|
|Author||Katrin Sjöberg and Elisabeth Uhlemann and Erik G. Ström|
|HostPublication||IEEE Vehicular Technology Conference (VTC Fall)|
|Conference||IEEE Vehicular Technology Conference, 5-8 Sept., San Francisco, CA, USA, 2011|
|Abstract||The hidden terminal problem is often said to be the major limiting performance factor in vehicular ad hoc networks. In this article we propose a definition of the hidden terminal problem suitable for broadcast transmissions and proceed with a case study to find how the packet reception probability is affected by the presence of hidden terminals. Two different medium access control methods; carrier sense multiple access (CSMA) from IEEE 802.11p and self-organizing time division multiple access (STDMA), are subject of investigation through computer simulations of a highway scenario with a Nakagami fading channel model. The results reveal that the presence of hidden terminals does not significantly affect the performance of the two MAC protocols. STDMA shows a higher packet reception probability for all settings due to the synchronized packet transmissions.|