A nonlinear equalization method using deep learning to improve RoF transmission quality of a continuous-phase frequency modulated two-channel C-ran connection

In this article, we establish a Digital Radio over Fiber (DRoF) information system with two wireless channels utilizing two advanced phase modulation techniques, namely Differential Phase Shift Keying (DPSK), for the CRAN connection and investigate parameters related to nonlinearity such as refractive index n2.