Impact of orientation-based solar light noise on the performance of underwater optical wireless communication system and noise cancellation

Abstract

Absorption, scattering, turbulence, and ambient light affect the performance of underwater optical wireless communication (UOWC) systems. Solar light is a form of undersea ambient light that causes interference to the UOWC system severely, and various optical components have been used to suppress solar noise. Therefore, the UOWC channel realization must ensure suitable system-based parameters to offer optimal performance. However, UOWC system performance lacks verification with the system receiver (Rx) facing multiple orientations in a high intense solar light at undersea depth. This work discusses the impact of solar light on the UOWC system with its Rx facing different orientations. It is found that the Rx orientation plays a significant role in determining the system performance. Furthermore, we numerically demonstrate the cancellation of solar noise interference using back-to-back Rx with differential amplifier mechanisms and better noise cancellation for Rx horizontal orientation.