Abstract
This paper investigates the total energy consumption in multi-hop underwater acoustic sensor networks (UWASNs) for a given target signal to noise ratio (SNR) requirement. Specifically, our aim is to minimize the energy consumption along the route between source and destination and to find the optimal hop distance that result in minimum energy consumption, by taking into account the propagation characteristics of sound signals through the underwater acoustic medium. The proposed study will form the basis for the design of energy efficient routing protocols that select minimum energy route in UWASNs. The impact of various characteristics of underwater acoustic signal propagation such as attenuation, noise, and the dependence of usable bandwidth and transmit power on distance, are considered for the energy consumption analysis. Further, analysis is carried out for both shallow and deep water scenarios under the assumption that each node can adjust its transmission power for a link so that the signal reaches the destination node, satisfying a target received SNR. We observe that, a linear equidistant network consumes minimum energy for both shallow as well as deep water scenarios.








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This work was supported by Naval Research Board, Ministry of Defence, Government of India under Grant No. DNRD/05/4003/NRB/283.
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Geethu, K.S., Babu, A.V. Minimizing the Total Energy Consumption in Multi-hop UWASNs. Wireless Pers Commun 83, 2693–2709 (2015). https://doi.org/10.1007/s11277-015-2564-2
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DOI: https://doi.org/10.1007/s11277-015-2564-2