Fundamental Channel Characteristic Comparison of Distinct LED Beams-Based Outdoor Free Space Optical Communications for 6G Wireless Networks

In upcoming 6G era, free space optical wireless communications (FSOC) are viewed as promising enabling techniques for backhaul and access of next-generation wireless networks. Channel modeling and characterization is the essential composition to predict FSOC system performance and feature, especially for outdoor application. Objectively, light emitting diodes (LED) are the popular and cost-efficient optical sources for short- and middle-range outdoor FSOC links. Up to know, the concerned LED beams are assumed to follow the well-known Lambertian radiation patterns for outdoor FSOC domain, which actually ignore the diversity and effect of the non-Lambertian radiation patterns of the commercially customized LEDs. For addressing the above issue, typical LUXEON Rebel non-Lambertian optical beam is adopted to configure the distinct LED beams-based outdoor FSOC links. Numerical results illustrate that more dispersive horizontal coverage characteristic could be derived from the LUXEON Rebel non-Lambertian FSOC links.