A threshold-based multiple optical signal selection scheme for WDM FSO systems
- Authors
- Nam, Sung Sik; Alouini, Mohamed-Slim; Ko, Young-Chai; Cho, Sung Ho
- Issue Date
- Jul-2017
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Free-space optical communication; Heterodyne detection; Log-normal turbulence; Wavelength division multiplexing
- Citation
- 2017 13th International Wireless Communications and Mobile Computing Conference, IWCMC 2017, pp.870 - 875
- Indexed
- SCOPUS
- Journal Title
- 2017 13th International Wireless Communications and Mobile Computing Conference, IWCMC 2017
- Start Page
- 870
- End Page
- 875
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/19589
- DOI
- 10.1109/IWCMC.2017.7986400
- Abstract
- In this paper, we propose a threshold-based-multiple optical signal selection scheme (TMOS) for free-space optical systems based on wavelength division multiplexing. With the proposed TMOS, we can obtain higher spectral efficiency while reducing the potential increase in complexity of implementation caused by applying a selection-based beam selection scheme without a considerable performance loss. Here, to accurately characterize the performance of the proposed TMOS, we statistically analyze the characteristics with heterodyne detection technique over independent and identically distributed Log-normal turbulence conditions taking into considerations the impact of pointing error. Specifically, we derive exact closed-form expressions for the average bit error rate, and the average spectral efficiency by adopting an adaptive modulation. Some selected results shows that the average spectral efficiency can be increased with TMOS while the system requirement is satisfied.
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