High Capacity Converged Passive Optical Network and RoF-Based 5G+ Fronthaul Using 4-PAM and NOMA-CAP Signals

Network architectural changes to satisfy all the 5G+ mobile network specifications and requirements are necessary due popularization of streaming cloud applications on omnipresent portable devices. The combination massive installation micro-cell antenna sites with access radio (C-RAN) architecture has recently been nominated as a promising technology for high-capacity fronthaul links, albeit at high cost. An alternative approach next-generation networks is utilize already deployed passive optical (PONs) where wireless wired services may coexist in converged manner. Non-orthogonal multiple (NOMA) modulation multi-band carrierless amplitude phase (NOMA-CAP) investigated format candidate increase capacity flexibility future networks. Here, we experimentally demonstrate convergence NOMA-CAP waveform single-carrier signal PON scenario using radio-over-fiber (RoF) technology. Specifically, fifteen bands, two NOMA power levels double capacity, transmit 15 Gb/s multiplexed digital 10 four-level pulse (PAM-4) downlink application. Two system implementations have considered, first electrical frequency division multiplexing (EFDM) secondly hybrid EFDM-wavelength (EFDM-WDM). Successful transmission through 25 km span standard single-mode fiber achieved negligible penalty both proposed solutions.