Abstract
Abstract As per the increasing demand of users, the wireless network fulfils significant challenges in terms of capacity, data rate, reduced environmental impact and better receiver performance. Radio over fiber (RoF) is the technique by which radio signal is modulated over the optical fiber link. The functioning of RoF is dependent on the optical modulator, optical fiber and photodetector. In this paper, dual parallel Mach–Zehnder modulator (DPMZM) is used, which gives good results against intermodulation distortion (IMD) errors. In order to investigate the receiver performance, positive-intrinsic-negative (PIN) and avalanche photodiode (APD) photodetectors are utilized at the receiver end. The analytical analysis of DPMZM based RoF system is analyzed, and the simulation model is implemented using OptSIM software, including PIN and APD photodetectors. The performance is scrutinized against various optical fiber lengths. The performance of the proposed model is analyzed and investigated by the presence of desired components and distorted (IMD) components for 1 and 5 km optical fiber distance between the control station and base station.
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