On the signal combinations for a uniquely decodable coded MIMO-FSO communication system

Performance Analysis of Power Allocation and User-Pairing Techniques for MIMO-NOMA in VLC Systems

“…For LED 1, U 1 represents the nearby user, and U 2 is the far user, as illustrated in Figure 1. In the case of FPA, U 1 achieves a consistently high data rate of 51.2 Mbit/s due to its high SINR according to (12). However, U 2 achieves a constant data rate of 5.2 Mbit/s in the range from Q = 0.1 to Q = 0.7, which is due to significant interference from U 1 .…”

“…The detailed simulation parameters of the system are shown in Table 1. We analyzed the achievable rate performance using (12) based on the model depicted in Figure 1, where U 1 remains stationary and centered between both LEDs. The distance between U 1 and U N was denoted by l, while the gap between U 1 and the room's edge was L = 2 m. We defined Q = l L as the normalized offset of U N with respect to U 1 , whereas…”

“…Motivated by this, the performance of NOMA-VLC systems is a topic of a lot of research interest [12]. In [13], a VLC system based on MIMO-NOMA was experimentally validated, although power allocation was not taken into account.…”