Title :
Performance analysis of digital acoustic communication in a shallow water channel
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC
fDate :
10/1/1995 12:00:00 AM
Abstract :
The major obstacle to underwater acoustic communication is the interference of multi-path signals due to surface and bottom reflections. High speed acoustic transmission over a shallow water channel characterized by small grazing angles presents formidable difficulties. The reflection losses associated with such small angles are low, causing large amplitudes in multi-path signals. In this paper we propose a simple but effective model for multi-path interference, which is then used to assess the performance of a digital communication system operating in a shallow water channel. The results indicate that transmission rates in excess of 8 kbits/s are possible over a distance of 13 km and channel depth of only 20 meters. Such a system offers improved performance in applications such as data collection from underwater sensors
Keywords :
acoustic signal processing; acoustic wave reflection; digital communication; interference (signal); multipath channels; underwater sound; 13 km; 20 m; 8 kbit/s; digital acoustic communication; grazing angles; multi-path signal interference; performance analysis; reflections; shallow water channel; underwater acoustic communication; Acoustic reflection; Acoustic sensors; Geometry; Information retrieval; Interference; Performance analysis; Sea surface; Transmitters; Underwater acoustics; Underwater communication;
Journal_Title :
Oceanic Engineering, IEEE Journal of