A New Architecture for Underwater Acoustic Sensor Networks
Vahid Hadidi, REZA JAVIDAN, Ali Barati, Amin Hadidi

Abstract
Underwater acoustic sensor networks (UASNs), have ability to monitor and predict underwater environment and gather scientific data. Essentially UASNs consist of underwater sensor nodes, underwater automatic vehicles (AUVs) and stations that are located on surface of water, which is used as gateways to prepare radio link communication with offshore stations. Quality of service in these networks is limited with some parameters such as, bandwidth of acoustic channel, propagation delay of sound and high-level ambient noise in the water. In this paper, at first, several aspects of underwater acoustic communications are investigated, after that; different architectures of UASN are discussed. In addition, we propose a new multipath scheme for UASN, which can improve end-to-end packet error rate while achieving a good balance between the overall energy efficiency and the end-to-end packet delay. Simulation results show that our method is highly energy-efficient with low end-to-end packet delays.

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