Analysis of Transmitter Half Angle and FOV Variations on Multiplexing Indoor Li-Fi Communication

Performance Analysis of Optical Channel Multiplexing System on Indoor Light

“…where q is the electron charge, h is the plank constant, and i(t) is the modulation current signal. Thus, by employing a multiplexing system involving several LED channels, the total LED responsiveness value is obtained, formulated as follows [18,19].…”

“…The increase in bandwidth resulting from the introduction of the proposed multiplexing system for both the mux two and mux four channel schemes is proportional to the increase in the number of channels as formulated by formula (4). The quantum efficiency percentage value can be determined using formula (5) [18,19].…”

“…where Δv is the channel spacing range (nm). By referring to formula (2), the current transfer of a 2-channel multiplexing system can be formulated as follows [18,19].…”

“…Li-Fi technology offers wide bandwidth and high data rates, providing opportunities for enhancing both transmitter and receiver efficiency and capacity [18]. However, Li-Fi technology faces limitations in accurately positioning devices for lineof-sight (LOS) conditions, necessitating the use of multiplexing systems to boost bandwidth efficiency, especially in indoor settings [18,19]. Research has proposed multiple input multiple output (MIMO) scenarios, with findings indicating that 2x2 and 4x4 channel multiplexing schemes result in nearly identical received power values.…”

“…The research has also investigated the influence of half-angle values and field of view (FOV) on the Li-Fi multiplexing system model [19], showing that angle variations from 30 o to 75 o meet the standards, even though with a bit rate limit of 20 Mbps per channel and propagation distance of up to 3 meters. The research suggests the implementation of indoor Li-Fi multiplexing using a transmitter half-angle value and a small FOV.…”