HW/SW Co-Design of a Low-Cost Underwater Sensor Node with Intelligent, Secure Acoustic Communication Capabilities

Hu, Fei; Xiao, Yang; Tilghman, Paul; Mokey, Steven; Byron, James; Sackett, Andrew

doi:10.1201/9781420067125-c11

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“…Some approaches use common microphones and speakers to perform the conversion of electric signals into acoustic signals, and vice versa [ 15 , 16 ]. However, the efficiency of these transducers is quite low and an alternative should be explored to produce the conversion.…”

Section: Related Workmentioning

confidence: 99%

An Ultra-Low Power and Flexible Acoustic Modem Design to Develop Energy-Efficient Underwater Sensor Networks

Sanchez

Clavero

Yuste

et al. 2012

Sensors

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This paper is focused on the description of the physical layer of a new acoustic modem called ITACA. The modem architecture includes as a major novelty an ultra-low power asynchronous wake-up system implementation for underwater acoustic transmission that is based on a low-cost off-the-shelf RFID peripheral integrated circuit. This feature enables a reduced power dissipation of 10 μW in stand-by mode and registers very low power values during reception and transmission. The modem also incorporates clear channel assessment (CCA) to support CSMA-based medium access control (MAC) layer protocols. The design is part of a compact platform for a long-life short/medium range underwater wireless sensor network.

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Section: Related Workmentioning

confidence: 99%