• Nitin Garg
• Dr. Anwar Ahmad

Optical wireless communication (OWC) has many advantages over RF communication like High Bandwidth and transmission rate, License free spectrum, Easy to employ and deploy, Cost effective, low Interference and power and Security. Due to this OWC gained significance importance. OWC is line of sight communication and weather dependent technology. Any changes in the atmosphere affect the OWC channel and lead to atmospheric turbulence. Also misalignment between the OWC transceiver due to various factors like thermal expansion, wind loads, earthquakes lead to pointing losses. This paper presents the comprehensive survey on the different atmospheric turbulence models. This paper also focuses on various pointing error models and effect on the atmospheric channel. In this paper we compare the performance of different atmospheric turbulence models and also discuss most generalized turbulence channels modeled by M´alaga (M) distribution. This paper also discusses the advantage and application of OWC system.

Atmospheric turbulence, pointing errors, Optical wireless communication (OWC), Log-normal, Gamma-Gamma distribution, M´alaga (M) distribution,

"Optical Wireless Communication: Atmospheric turbulence and pointing error models ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.201-210, April-2019, Available :http://www.jetir.org/papers/JETIR1904028.pdf

"Optical Wireless Communication: Atmospheric turbulence and pointing error models ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp201-210, April-2019, Available at : http://www.jetir.org/papers/JETIR1904028.pdf