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http://dx.doi.org/10.7471/ikeee.2018.22.4.1068

Performance analysis of CSMA based MAC protocols for underwater communications  

Song, Min-Je (Electronics and Telecommunications Research Institute(ETRI))
Jang, Youn-Seon (Dept. of Electronics Engineering, Chungnam National University)
Publication Information
Journal of IKEEE / v.22, no.4, 2018 , pp. 1068-1072 More about this Journal
Abstract
In underwater communications, there are many challenges due to energy limitations, long propagation delay, low data rate, and high power loss, unlike terrestrial RF communications. Especially, the propagation delay of underwater acoustic channel is five orders of magnitude higher than in electro-magnetic terrestrial channels due to the low speed of sound(1,500m/s). Thus, the MAC protocols for terrestrial communications are not suitable for underwater network. In this paper, we studied the considerations for MAC protocol in underwater acoustic channel. Here, we concentrated on CSMA based MAC protocols. From the results, we confirmed that the number of control packets has an important effect on the performance in underwater environment. These results would be useful in designing MAC protocols for underwater acoustic communications.
Keywords
sensor network; MAC(Media Access Control) protocol; CSMA(Carrier Sensing Multiple Access); underwater communication; acoustic wave;
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