2 × 20 Gbps - 40 GHz OFDM Ro-FSO transmission with mode division multiplexingA. Amphawan, S. Chaudhary and V.W.S. ChanJ. Eur. Opt. Soc.-Rapid Publ., 9 (2014) 14041DOI: https://doi.org/10.2971/jeos.2014.14041
