1.02Tb/s CPRI-Equivalent Rate Direct Detection Transmission Supporting 1024-QAM Using IQ Interleaved Digital-Analog Radio-over-Fiber for Mobile Fronthaul

Large-capacity and high-fidelity radio-over-fiber (RoF) solution is attractive for 5G-advanced and 6G mobile fronthaul. In this work, we experimentally demonstrate 1.02Tb/s CPRI-equivalent data rate supporting 1024-QAM OFDM signal transmission with direct detection. The SNR improvement is benefited from both low peak-to-average power ratio (PAPR) property of IQ interleaved digital-analog RoF (DA-RoF), and joint optimization of rounding factor and scaling factor, offering a cost-effective solution.