Practical demonstration of spectrally efficient FDM millimeter wave radio over fiber systems for 5G cellular networking
This work reports the first demonstration of spectrally efficient frequency division multiplexed (SEFDM) signal transmission based on mm wave radio over fiber (RoF) technology. Such systems aim to satisfy the beyond 4G (5G) demands of low cost, low energy, millimeter wave carrier frequencies and high spectral efficiency. The proposed radio over fiber topology, using passive optical network (PON) infrastructure and low cost multimode fiber (MMF) is analyzed and a proof of concept SEFDM radio over 250m OM 1 MMF transmission with a 3m 60GHz wireless link is successfully demonstrated. Different systems are demonstrated, at raw data rates up to 3.7 Gb/s, showing SEFDM spectrum saving up to 40% relative to OFDM.
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