Optical wireless communication systems are gaining popularity because of its benefits and advantages over conventional radio frequency (RF) communication systems. This paper presents the analysis of optical wireless communication system based on effect of various bit rates on the power received and bit error rate (BER) on the power received. From the mathematical analysis, optical wireless communication system with bit rate of 155 Mbps is proven to be the most suited to improve the performance of the system regarding attenuation effect on the link compared to bit rate of 622 Mbps, 1.5 Gbps, and 2.5 Gbps, respectively. It increased the system efficiency by 17%, 14% and 10% as compared to the three other bit rates in the studies of BER effects on power received. In addition, the plot between distance versus power received, bit rate of 155 Mbps had shown superior performance as it improves the link by 28% and 2% compared to 622 Mbps and 2.5 Gbps, where it is reliable for future optical wireless usage.
