Impact of Transceiver Alignment on a Software-defined Underwater Visible Light Communication System

Underwater visible light communication (UVLC) is believed to revolutionize the future of optical communication, where visible light of wavelength 400-500 nm range is used to transmit data underwater. In this paper we aim to find how the position of the receiver affects the accuracy of the received optical signal. The message signal is modulated using pulse position modulation (PPM) because of its high noise resistance through water. The position of the receiver is changed accordingly and the bits in error are recorded to discuss the relationship between angle of the receiver, bit-error-rate and received signal power.