Energy Efficiency in Underwater Sensor Networks: a Research Review

Abstract

In an energy-constrained underwater system environment it is very important to find ways to improve the life expectancy ofthe sensors. Compared to the sensors of a terrestrial Ad Hoc Wireless Sensor Network (WSN), underwater sensors cannotuse solar energy to recharge the batteries, and it is difficult to replace the batteries in the sensors. This paper reviews theresearch progress made to date in the area of energy consumption in underwater sensor networks (UWSN) and suggestsfurther research that needs to be carried out in order to increase the energy efficiency of the UWSN system.

Keywords

• Underwater acoustic sensor networks (UWSNs)
• Acoustic communications
• Energy efficiency
• Lithium-ion batteries
• Acoustic