An Empirical Comparison of Modulation Schemes in Turbulent Underwater Optical Wireless Communications

This paper presents an empirical comparison of different modulation schemes in still and turbulent water conditions. Using underwater channel emulator, it is shown that pulse position (PPM) subcarrier intensity (SIM) have inherent resilience to turbulence induced fading with SIM achieving higher data rates under all Finally, the signal processing technique termed pair-wise coding (PWC) applied optical wireless communications for first time. The performance PWC compared the, state-of-the-art, bit power loading optimisation algorithm. PWC, a maximum rate 5.2 Gbps achieved