Comparative Performance Analysis of Analog and Digital Optical Wireless Communication Through Water-Filled Pipes Using Visible-Light LEDs. - Nonchanutt Chudpooti; Kamol Boonlom; Prayoot Akkaraekthalin; Weijia Zhang; Timothy J. Amsdon; Doldet Tantraviwat; Saad W. O. Luhaib; Joachim Oberhammer; Nutapong Somjit (IEEE Access, 2026)