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Evaluation of Proposed CSMA/CA Protocol in The Underwater Acoustic Networks  

Kim, Lack-Hoon (Dept. of Electronic Eng., Soongsil University)
Shim, Tae-Bo (Dept. of Electronic Eng., Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.46, no.1, 2009 , pp. 63-70 More about this Journal
Abstract
The purpose of this paper is to propose a CSMA/CA protocol to reduce the delay time and increase the throughput of the original CSMA/CA protocol. In underwater environments, the efficiency of the protocol is reduced due to the increase of the propagation delay time, which results in increase of the collision possibility causing lowering of the transmission efficiency Considering this propagation delay, this paper propose to insert the STANDBY frame in a CTS packet in order to avoid the TimeOut status of the CSMA/CA protocol. According to the simulated test results, proposed protocol is increased about 20% throughput than original CSMA/CA protocol. And the more value of propagation per transmission delay 'a' is low, the more throughput of protocol is better.
Keywords
Underwater Acoustic Communication; Underwater Network; Multiple Access Protocol; CSMA/CA;
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