Bio-Optical Modelling-Phytoplankton Absorption in ocean water

The nature of received signal when a PPM/OOK modulated signal passes through a channel characterized in terms of OAS for underwater environment. Optical signal of blue-green wavelength is greatly attenuated by the optically active substances (OAS) in water. The OAS considered here is the phytoplankton's since they tend to absorb the blue-green wavelength the most. To determine the specific absorption co-efficient of various species of phytoplankton, with different Photo synthetically Absorptive Radiation (PAR) two component model is used. Further performance metrics like Signal to Interference ratio (SIR) and Bit Error Rate (BER) for PPM and OOK modulation schemes are studied and compared. This is applied to the data's of Bay of Ville franche-France (Mediterranean sea), Kaduviyar estuary-Nagapattinam, Tamil Nadu in India and Palk Bay, south east coast of India.