Title :
High-Speed High-Frequency Acoustic Modem for Image Transmission in Very Shallow Waters
Author :
Beaujean, Pierre-Philippe J.
Author_Institution :
Florida Atlantic Univ., Dania Beach
Abstract :
A one-way, high-speed, high-frequency acoustic modem (HS-HFAM) operating between 260 kHz and 380 kHz has been developed to transmit compressed underwater images and status information in real-time. High data rates are made possible using a high-resolution decision feedback equalizer with parallel algorithm for tracking and compensating large Doppler. Experimental results show that this modem achieves 13298.2 information bits per joule at 87768 information bits per second and at a range of 88 m in ports and shallow waters.
Keywords :
modems; oceanographic equipment; remotely operated vehicles; underwater acoustic communication; underwater vehicles; HS-HFAM system; bit rate 87768 bit/s; frequency 260 kHz to 380 kHz; image transmission; one-way high-speed high-frequency acoustic modem; shallow waters; status information transmission; Acoustic transducers; Decision feedback equalizers; Doppler shift; Frequency; Image communication; Modems; Reverberation; Sea surface; Underwater acoustics; Underwater cables; Acoustic; High-speed; Modem; Underwater;
Conference_Titel :
OCEANS 2007 - Europe
Conference_Location :
Aberdeen
Print_ISBN :
978-1-4244-0635-7
Electronic_ISBN :
978-1-4244-0635-7
DOI :
10.1109/OCEANSE.2007.4302225
