Implementation of Adaptive Bit Decision Point to Improve Receiver Performance in Li-Fi System

The growing demand for high-reliability and low-latency wireless links requires increasingly modern wireless technologies predicted in 5G and beyond. In general, wireless communication devices currently use Radio Frequency (RF) in the data transmission process, so the exponential increase continues to make the radio spectrum below 10 GHz insufficient. While most of the mobile data traffic is consumed indoors, where Light Fidelity (Li-Fi) associated with Visible Light Communication (VLC) offers many special advantages and effective solutions to various wireless communication problems. Based on the current development of Li-Fi, researchers see that the receiver is very dependent on the processes that occur in the detector in interpreting changes in light intensity (signal) as data. For this reason, through this research, the researcher proposes an Adaptive Bit Decision Point (BDP) algorithm that allows the receiver to adapt to changes in the intensity of light captured by the detector, both changes to Ambien Light and changes to distance and angle to improve data reception performance on the Li-Fi system. The results show that the application of the Adaptive Bit Decision Point algorithm on the receiver of the Li-Fi system can provide a very significant performance increase