Synchronization of a MIMO-OFDM based radio-over-fiber communication system in the presence of phase noise

Abstract

In this paper the impact of a Radio-over-Fiber (RoF) optical subsystem on the sensitivity to the phase noise of Orthogonal Frequency Division Multiplexing (OFDM) in a multiple-input multiple-output (MIMO) system is evaluated and a method for reducing the effect of this phase noise is presented using computer simulation. The study investigates the effect of phase noise on the system Bit Error Rate (BER) for different Output-Back-Off levels in the presence of optical subsystem's nonlinearity in an AWGN channel. Hence, a way to reduce its effect is presented by estimating this phase offset that it is called synchronization of phase noise.