Soubhi Hussein, Yaseein, Mohamad Yusoff Alias, Ayad A. Abdulkafi, Nazaruddin Omar, and Mohd Kamarulzamin Bin Salleh. 2018. “Expectation-Maximization-Based Channel Estimation Algorithm for OFDM Visible Light Communication Systems”. International Journal of Engineering & Technology 7 (4): 2638-45. https://doi.org/10.14419/ijet.v7i4.15994.