Analisis Sistem Jaringan Radio over Fiber (RoF) Menggunakan Variasi Teknik Modulasi PSK Pada Wavelength Division Multiplexing

Abstract

In the era of information that continues to develop rapidly, the need for high transmission capacity is crucial in supporting network connectivity. Radio over Fiber (RoF) offers a solution by integrating wireless and fiber optic communication systems. This research analyzes the performance of Wavelength Division Multiplexing (WDM)-based RoF networks with 4-PSK, 8-PSK, and 16-PSK modulation variations, using Bit Error Rate (BER) and Q-Factor parameters. Analysis were performed with OptiSystem 7.0 at distances of 50-200 km and bitrates of 3-7 Gbps. The results show 4-PSK has the best performance for long distances, with the highest Q-Factor of 37.56 (50 km) and the lowest of 7.38 (200 km). Meanwhile, 8-PSK and 16-PSK are superior for short distances, with the highest Q-Factor of 36.88 and 36.83 (50 km), but degrade faster at long distances. In terms of BER, 4-PSK has the best value of 4.14 × 10-³ (50 km) and the worst of 7.00 × 10-³ (200 km), while 16-PSK has the lowest BER of 1.75 × 10-³ at 150 km. Thus, 4-PSK is more suitable for long distances, while 8-PSK and 16-PSK are more optimal for high bitrates at short distances (<150 km) in WDM-based RoF networks