25 April 2014 Physical layer simulator for undersea free-space laser communications
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Abstract
High bandwidth (10 to 100 Mbps), real-time data networking in the subsea environment using free-space lasers has a potentially high impact as an enabling technology for a variety of future subsea operations in the areas of distributed sensing, real-time wireless data transfer, control of unmanned undersea vehicles, and other submerged assets. However, the development and testing of laser networking equipment in the undersea environment are expensive and time consuming, and there is a clear need for a network simulation framework that will allow researchers to evaluate the performance of alternate optical and electronic configurations under realistic operational and environmental constraints. The overall objective of the work reported in this paper was to develop and validate such a simulation framework, which consists of (1) a time-dependent radiative transfer model to accurately predict the channel impulse characteristics for alternate system designs over a range of geometries and optical properties and (2) digital modulation and demodulation blocks which accurately simulate both laser source and receiver noise characteristics in order to generate time domain bit stream samples that can be digitally demodulated to predict the resulting bit error rate of the simulated link.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Fraser R. Dalgleish, Joseph J. Shirron, David Rashkin, Thomas E. Giddings, Anni K. Vuorenkoski Dalgleish, Ionut Cardei, Bing Ouyang, Frank M. Caimi, Mihaela Cardei, "Physical layer simulator for undersea free-space laser communications," Optical Engineering 53(5), 051410 (25 April 2014). https://doi.org/10.1117/1.OE.53.5.051410 . Submission:
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