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Underwater Wireless Communications in Freshwater at 2.4 GHz

Sendra, S. S. ; Lloret, J. L. ; Rodrigues, J. R. ; Aguiar, J. A.

IEEE Communications Letters Vol. 17, Nº 9, pp. 1794 - 1797, September, 2013.

ISSN (print): 1089-7798
ISSN (online):

Journal Impact Factor: 1,268 (in 2014)

Digital Object Identifier: 10.1109/LCOMM.2013.13.131214

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Abstract
There are few equations for underwater communi- cations in the related literature. They show that the speed prop- agation and absorption coefficient in freshwater are independent of the working frequency of the transmitted signals. However, some studies demonstrate that electromagnetic waves present lower losses when they are working at certain frequencies. In this paper, we perform a set of measurements of electromagnetic (EM) waves at 2.4 GHz in the underwater environment. In our study case, we fix the water conditions and we measure the behavior of EM as a function of several network parameters such as the working frequency, data transfer rates and modulations. Our results will show that higher frequencies do not mean worse network performance. We will also compare our conclusion with some statements extracted from other works.