Simulation of ultra long reach and high speed date rate optical wireless multiplexing communication systems based on various modulation codes

Abstract This article has clarified ultralong reach and high data rate optical wireless multiplexing communication systems based on various modulation codes. Optical wireless communications can provide communication at high speed and achieve farther long distance compared to RF links. It is assured that the low bit rates can be used for long distance error-free transmission. The Q-factor decreases as the distance increases. The error at the receiving station increases with increase in transmission distance. Higher antenna aperture can achieve long distance transmission. The simulation results presented ultralong reach high speed date rates by utilizing VCSEL light sources and APD receivers. The optical signals with low bit rates can be used for long transmission reach. The performance of OWC link can be improved by using VCSELs and APDs. Therefore, the distance reach can be extended to 5000 km. The Q reduces and BER increases as the data rate increases for both NRZ and RZ schemes over various transmission reach on different temperature and various aperture diameters.