期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2020
卷号：98
期号：11
页码：1901-1919
出版社：Journal of Theoretical and Applied
摘要：The In recent years, the broadband services demand has increased considerably. The size of the radio frequency spectrum (RF) (3 kHz to 300 GHz) should limit the growth of future wireless systems unless new parts of the spectr are opened. Even with the use of advanced engineering, such as signal processing and advanced modulation schemes, it will be very difficult to meet the demands of users in the coming dec-ades, using frequencies existing carriers. On the other hand, there is a potential spectrum band can provide tens of Gbps to Tbps for users in the near future. Communication technology FSO (Free Space Optical), also known as optical wireless communication (OWC: optical wireless communication) has generated great interest in recent years. In some cases, the FSO is considered an alternative to existing technologies such as radio frequency. In other cases, FSO is considered a strong candidate to complete and integrate next-generation technologies, such as wireless networks 5G.Accordingly, the FSO technology is widely deployed in various indoor environments (e.g. data centers), terrestrial (e.g. mobile networks) and spatial (e.g., inter-satellite communication and deep space) and subsea systems (e.g., submarine detection). Gradually, as the portfolio of applications of FSO technology develops, the need for a clear investigation for cooperative systems FSO links is the same. Most surveys of existing cooperative systems are surveys at one level and therefore not inclusive enough to reflect changes and recent and emerging developments in different con-figurations of cooperative systems FSO. In this article we give an overview on the most important coopera-tive systems encountered in OWC systems in indoor environments, terrestrial, space and underwater. We use surveys offered to review and summarize the experimental work and the major systems of cooperative systems FSO in the area until 2019.Using the survey suggested, we aim to give researchers an opportunity to tap into the growing field and expansion of cooperative systems FSO technology in different environ-ments. The proposed survey can also help to organize and systematically present the advances in technol-ogy research cooperative FSO systems.
关键词：Cooperative System;Free Space Optical (FSO);Indoor;Optical Wireless Communications (OWC);Space;Terrestrial;Underwater;Wireless Communications.
