The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Underwater acoustic communication, compared with Wireless Sensor Networks (WSNs) used in terrestrial environment, poses unique challenges due to the harsh underwater environment, such as limited bandwidth capacity, high and variable propagation delays, high bit error rates, and temporary losses connectivity caused by multipath and fading phenomena in spite of using a variety of applications in many...
The principles of sensor networks, with inexpensive low-power, wireless, in-situ sensing, are today going underwater with acoustic communication. With large acoustic delays, new modems use techniques such as low-power wakeup tones to reduce energy otherwise wasted on idle listening, and recent applications and MAC protocols integrate tones in their operation. While all wireless data-networks suffer...
Physical properties of hydroacoustic communication channels differ essentially from those of conventional terrestrial radio channels, the former being characterized by the long propagation delays, limited bandwidth, extremely complex and quickly varying reverberation, and the half-duplex nature of underwater acoustic modems. This motivates a substantial redesign of the algorithms and techniques of...
MAC protocol development for underwater acoustic modem has been an active research area for many years. The primary mode of investigation is through network simulations. Subsequent implementation in modems for testing in sea trials typically involves porting of simulation code into the appropriate programming language and software environment in a modem. Correct porting is critical since, if the modem...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.