Studies On the Performance of a Short Haul Optical Link for Broadband Indoor and Outdoor Wireless Communication
DOI:
https://doi.org/10.64882/ijrt.v14.i4.2017Keywords:
Bit Error Rate (BER), Indoor Wireless Networks, Atmospheric Turbulence, Optical Link Performance, Broadband Communication, Li-Fi, Visible Light Communication (VLC), Free Space Optics (FSO), Optical Wireless Communication (OWC)Abstract
The exponential growth of broadband wireless communication has created an increasing demand for communication technologies capable of supporting ultra-high data rates, enhanced reliability, and efficient spectrum utilization. Conventional Radio Frequency (RF) communication systems suffer from limited spectrum and high electromagnetic interference, and bandwidth congestion, therefore alternative wireless communication technologies need to be explored. Optical Wireless Communication (OWC) is an appealing technology as it can use the huge unlicensed optical spectrum to deliver fast, secure, and energy-efficient wireless communication. The review is focused on the performance of short-haul optical links for broadband indoor/outdoor wireless communication, especially Free Space Optical (FSO) and Visible Light Communication (VLC) technologies. Indoor and outdoor optical communication systems are covered in detail, along with their construction, performance characteristics, and applications. The effects of atmospheric attenuation, turbulence, scintillation, beam wander, and alignment problems on these systems' performance are also highlighted. Additionally, based on prior theoretical, computational, and experimental research, the many methods employed to enhance performance, including aperture averaging, receiver diversity, and wavelength optimization, are examined. The results demonstrate that compared to shorter wavelengths, longer wavelengths (1550 nm) exhibit improved Bit Error Rate (BER) performance and exhibit less scintillation effect. Furthermore, it is demonstrated that large receiver apertures and partially coherent optical beams can greatly improve the reliability of communication in turbulent atmosphere. The review shows that Optical Wireless Communication (OWC), when combined with hybrid RF–FSO architectures, Artificial Intelligence (AI), and the newly emerging 5G/6G communication networks, has substantial potential to deliver ultra-high speed, secure, and reliable wireless broadband connectivity for the future communication system.
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