Title :
BiDirectional optical communication with AquaOptical II
Author :
Doniec, Marek ; Rus, Daniela
Author_Institution :
Comput. Sci. & Artificial Intell. Lab., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
This paper describes AquaOptical II, a bidirectional, high data-rate, long-range, underwater optical communication system. The system uses the software radio principle. Each AquaOptical II modem can be programmed to transmit user defined waveforms and record the received waveforms for detailed analysis. This allows for the use of many different modulation schemes. We describe the hardware and software architecture we developed for these goals. We demonstrate bidirectional communication between two AquaOptical II modems in a pool experiment. During the experiment AquaOptical II achieved a signal to noise ration of 5.1 over a transmission distance of 50 m at pulse widths of 1 μsec, 500 ns, and 250 ns. When using discrete pulse interval modulation (DPIM) this corresponds to a bit-rate of 0.57 Mbit/s, 1.14 Mbit/s, and 2.28 Mbit/s.
Keywords :
modems; optical modulation; pulse width modulation; software radio; underwater optical wireless communication; waveform analysis; AquaOptical II modem; DPIM; bidirectional communication; bidirectional optical communication; bit rate 0.57 Mbit/s; bit rate 1.14 Mbit/s; bit rate 2.28 Mbit/s; discrete pulse interval modulation; hardware architecture; modulation schemes; pulse widths; received waveforms; signal to noise ratio; software architecture; software radio principle; transmission distance; underwater optical communication system; user defined waveforms; Field programmable gate arrays; High speed optical techniques; Modems; Optical fiber communication; Optical receivers; Optical sensors; Software;
Conference_Titel :
Communication Systems (ICCS), 2010 IEEE International Conference on
Conference_Location :
Singapor
Print_ISBN :
978-1-4244-7004-4
DOI :
10.1109/ICCS.2010.5686513
