This paper presents the numerical simulation studies of upgraded system for single-mode fiber (SMF wired)/free space optics (FSO wireless) under high-speed operation of 10 Gb/s. Further, the maximum reach of the system is analyzed based on various advanced modulation techniques, namely phase frequency shift keying (CPFSK), quadrature amplitude modulation, differential phase-shift keying, frequency shift keying, pulse amplitude modulation and different optical amplifiers, namely erbium-doped fiber amplifier, traveling wave semiconductor optical amplifier and parametric optical amplifier, respectively. The overall system studies are done by optiwave system software through which bit error rate and Q-factor are studied. The trade-off between different all-optical amplifiers and modulation techniques is studied to show the enhancement of upgrading system. The simulation results show that the maximum reach of distance belongs to CPFSK modulation scheme.

中文翻译：

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用于局域网通信网络的高速10 Gb / s有线/ FSO系统设计，可最大程度地覆盖

本文介绍了在10 Gb / s的高速操作下单模光纤（SMF有线）/自由空间光学（FSO无线）升级系统的数值模拟研究。此外，基于各种高级调制技术（即相频移键控（CPFSK），正交幅度调制，差分相移键控，频移键控，脉冲幅度调制和不同的光放大器，即）来分析系统的最大范围掺杂的光纤放大器，行波半导体光放大器和参量光放大器。整个系统研究是通过optiwave系统软件完成的，通过该软件可以研究误码率和Q因子。研究了不同全光放大器和调制技术之间的权衡，以显示升级系统的增强。仿真结果表明，最大距离属于CPFSK调制方案。