Analysis of Power Allocation in Visible Light-NOMA Communication Using Uniform Probability Distribution Function

This paper proposes the analysis of the power allocation (PA) technique in visible light - non orthogonal multiple access (VL-NOMA) communication systems using uniform probability distribution function (UPDF) for improved system performance. A light-emitting diode (LED) transmits data to two mobile users (near- and far-users) in the indoor environment. The issues of better reception in a room and in distances to detect the signal prompted this study. NOMA decodes the signals for achievable rate based on the inequality agreement of the two mobile users while UPDF concentrates on the percentage at which the two mobile users are placed within the room. We have developed a new approach named UPDF-NOMA to solve the problem for PA in the VL-NOMA scenario. The UPDF-NOMA approach will decide the detection area for transmitted signal in percentage within the system. We observe that UPDF-NOMA performs 60% detection of the signal at 2m to 2.1m distance in the system. The simulation analysis presents the detected signals using the MATLAB software tool.