Mixed mmWave and Radio-Over-Fiber Systems With Fiber Nonlinearity

The performance of the mixed millimeter-wave and radio-over-fiber (mmWave RoF) amplify-and-forward systems is studied for the fifth-generation mobile networks. The impacts of optical fiber nonlinearity, optical modulator nonlinearity, and radio frequency co-channel interference on the performance of the mixed mmWave RoF systems are included. We present the analytical results for the outage probability and the average bit-error rate in a simplified closed form expressions and verify them using Monte Carlo simulations. By careful selection of the transmit optical power in the fiber, the impacts of fiber nonlinear distortion and receiver noise can be balanced to optimize the system performance.