Sixteen-Channel 1920 Gbps Full-Duplex Optical Fiber Coherent Communication System Based on Dual Polarization-64 Quadrature Amplitude Modulation for 5G Fronthaul

This article presents a bidirectional optical fiber communication system employing Dual Polarization-64 Quadrature Amplitude Modulation and Digital Signal Processing (DP-64QAM and DSP). With sixteen channels operating at 120 Gb/s each, the system achieves a total capacity of 1920 Gbps. OptiSystem V.19 software simulations confirm compliance with ITU-T 5G fronthaul requirements in G-series Recommendations-Supplement 66. Performance evaluation focuses on Bit Error Rate (BER), incorporating an Optical Signal-to-Noise Ratio (OSNR) and an adaptable optical span. Simulation results establish the system’s suitability as an F1 and Fx 5G fronthaul link for functional splits of 1 to 7c, aligning with ITU-T stipulations (