  In this paper, we propose applying Non-Orthogonal Multiple Access (NOMA)
technology in a multiuser beam steering OWC system. We study the performance of
the NOMA-based multiuser beam steering system in terms of the achievable rate
and Bit Error Rate (BER). We investigate the impact of the power allocation
factor of NOMA and the number of users in the room. The results show that the
power allocation factor is a vital parameter in NOMA-based transmission that
affects the performance of the network in terms of data rate and BER.

Signal Processing