Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Energy-Efficient Channel Coding Strategy for Underwater Acoustic Networks

2017; Multidisciplinary Digital Publishing Institute; Volume: 17; Issue: 4 Linguagem: Inglês

10.3390/s17040728

1424-8220

Grasielli Barreto, Daniel H. Simao, Marcelo Eduardo Pellenz, Richard Demo Souza, Edgard Jamhour, Manoel C. Penna, Glauber Brante, Bruno S. Chang,

Indoor and Outdoor Localization Technologies

Underwater acoustic networks (UAN) allow for efficiently exploiting and monitoring the sub-aquatic environment. These networks are characterized by long propagation delays, error-prone channels and half-duplex communication. In this paper, we address the problem of energy-efficient communication through the use of optimized channel coding parameters. We consider a two-layer encoding scheme employing forward error correction (FEC) codes and fountain codes (FC) for UAN scenarios without feedback channels. We model and evaluate the energy consumption of different channel coding schemes for a K-distributed multipath channel. The parameters of the FEC encoding layer are optimized by selecting the optimal error correction capability and the code block size. The results show the best parameter choice as a function of the link distance and received signal-to-noise ratio.