S Anandalatchoumy and G Sivaradje

In underwater acoustic communication, shallow water and deep water are two different mediums which exhibit many challenges to deal with due to the time varying multipath and Doppler Effect in the former case and multipath propagation in the latter case. In this paper, the characteristics of the acoustic propagation are described in detail and channel models based on the various propagation phenomena in shallow water channel and deep water channel as well are presented and the transmission losses incurred in each model are thoroughly investigated. Signal to noise ratio (SNR) at the receiver is thoroughly analyzed. Numerical results obtained through analytical simulations carried out in MATLAB bring to light the important issues to be considered so as to develop suitable communication protocols for Underwater Wireless Communication Networks (UWCNs) to provide effective and reliable communication.

BIND, DNS server, DNS protocols, RAD, UCBUnderwater Acoustic Communication, Transmission Loss, Shallow Water, Deep Water