Adaptive QAM-OFDM Radio-over-FSO Fronthaul: Semi-Analytical EVM Modeling and Outage Analysis
Analog radio-over-free-space optical (RoFSO) fronthaul can transport radio waveforms over rapidly deployable optical beams, but atmospheric fading, receiver noise, orthogonal frequency-division multiplexing (OFDM) peaks, analog bandwidth, and channel-state uncertainty degrade modulation quality. This paper develops a 1...