Applying polar codes to improve Li-fi system performance
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Date
2020
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Publisher
UMT.Lahore
Abstract
The demand for increase bandwidth and high speed in communication field has motivated researchers and scientist alike to work on making an efficient visible light communication system. But there are currently no efficient Li-Fi systems available for commercial use. This thesis has explored the avenue of implementing and evaluating Polar Code Error Correction Technique in Li-Fi systems. Polar Codes are a linear block error correcting code and in recent years have being adopted in many other systems due to promising efficiency. In this research, a Li-Fi system has been simulated and observed under indoor and outdoor environment conditions. The simulation environment was developed in MATLAB and the results are concluded in two case scenarios, notably in polar block size and environment based conditions. It was observed from the results that larger polar block size was stable and less noisy in both environmental stimuli due to the large number of polarized virtual channels. The results are also compared with currently widespread used IM/DD modulation technique and the Polar Codes are shown to have better performance than IM/DD technique. The conclusion is drawn as that the implementation of Polar Codes in Li-Fi system is viable solution but the larger polar block size is better at performance as compared to small block size.