All-Optical Distributed MIMO for LiFi: Spatial Diversity Versus Spatial Multiplexing

LiFi or networked optical wireless communication is likely to play an important role in offloading mobile data traffic from radio into the spectrum. As number of Internet Things (IoT) devices growing, RF spectrum becomes a rare resource. Imaging IoT sensors like cameras, ultrasonic devices, and Lidars have real-time requirements, need high-capacity uplink, operate environments that cause are sensitive against electromagnetic interference. In this paper, for first time, we present realtime over all-optical fixed-wireless link based on distributed multiple-input multiple-output concept. For distributing signals, plastic fibers used as analog front-haul. We study operation two modes, i.e., spatial diversity multiplexing. mode, new combiner presented, which can support equal gain well selection combining. demonstrate combining highly effective enables similar performance up- downlink, it desirable industrial applications. multiplexing observe channel rank achievable throughput depend strongly user location. solutions, benefits angular mode switching together with multi-user conclude dynamic between practical approach.