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Abstract
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The presence of barriers causes leakage in the performance of multi-user multiple-input multiple-output visible light communication systems. To cope with this problem, optical reflecting intelligent surface is a promising technology. In this research, the integrated design of precoding and alignment matrices is developed to achieve the maximization of the average signal-to-interference plus noise ratio (SINR). One of the limitations is to keep the precoding output signal level in the linear region of the light-emitting diode’s transfer characteristic. Consequently, by taking into account the constraint imposed by the allocated transmit power associated with each user, an optimization problem is formulated. To solve the stated problem, we implement an alternating optimization algorithm designed to optimize the precoding and alignment matrices. The findings from the simulation indicate that the SINR achieved through the proposed method surpasses that of similar techniques.
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