RESOURCE ALLOCATION AND PERFORMANCE OPTIMIZATION IN ROF-BASED FIBER-WIRELESS ACCESS NETWORKS
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The objective of the research is to study and demonstrate radio-over-fiber (RoF) based access technologies to improve the system performance of fiber-wireless networks. The proposed resource-allocation schemes can support RoF-based wireless overlay over fixed access networks, as well as facilitating photonic-assisted millimeter-wave (mmWave) generation and transmission that is essential for next-generation high-capacity radio access networks. Owing to the architecture convergence of radio and fixed access networks, mmWave signals for wireless services and digital signals for fixed services can be co-transmitted using the proposed schemes, bringing extra benefits with fiber resource re-use and optimization. To further enhance system performance, advanced waveforms, multiple access schemes, intelligent scheduling are also investigated and experimentally demonstrated for mobile fronthaul systems with mmWave transmission, which improve the spectral efficiency, robustness against interference, decoding accuracy, network flexibility, and resource allocation of RoF-based fiber-wireless access networks.