Performance Analysis of Optical-CDMA via FSO effect on Li-Fi system utilizing L'Band frequencies

Due to the significant need for modern technologies to meet the growing requirements of wide bandwidths, high levels of security, and high speeds. VLC Technology is one of the most promising technologies in the generations of communications. Li-Fi is a bidirectional wireless communication that transmits data via LED. However, LI-FI technology has a lot of challenges when dealing with a growing number of users, resulting in a decrease in system performance and signal attenuation on the FSO carrier line due to weather conditions in L-Bands. Use The approach OCDMA in This paper contributed to the full exploitation of the wavelength. The growth in the number of users in various weather conditions while maintaining the security of the system show results in the case of dust; the BER improved approximately from 10
⁻⁷
to 10
⁻¹⁵
. In the rain, Q-factor improved approximately from 2.252 to 5.922. In general, the ambitious results extracted enhanced the system's performance under different conditions.