Performance Analysis of RoFSO Links with Diversity Reception for Transmission of OFDM Signals Under Correlated Log-normal Fading Channels

Authors

  • Fan Bai Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan
  • Yuwei Su Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan
  • Takuro Sato Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan

DOI:

https://doi.org/10.13052/jicts2245-800X.224

Keywords:

Free Space Optical (FSO), Orthogonal Frequency Division Multiplexing (OFDM), spatial diversity, channel correlation, atmospheric turbulence, Maximum Ratio Combining (MRC), Equal Gain Combining (EGC)

Abstract

Free space optical (FSO) communication has been receiving growing attention with recent commercialization successes as a cost-effective and high bandwidth optical access technique. Meanwhile, FSO communication has been regard as an attractive solution to bridging the gap between the wireless communications and optical fiber communications. However, a significant performance degradation in FSO communication system due to the atmospheric turbulence impairs the transmission performance improvement. FSO system employing the spatial diversity technique can be used to mitigate the effect of turbulence and improve the transmission performance. In this paper, a novel analytical approach is presented to evaluate the transmission performance of OFDM-FSO system with diversity reception considering effect of channel correlation. A detailed mathematical model for OFDM-FSO system over turbulent channel modeled by correlated Log-normal distribution is provided. Then, We derive the signal-to-noise ratio (SNR), bit error ratio (BER) and outage probability expressions taking into account the diversity combining schemes (i.e. MRC, EGC), effects of atmospheric turbulence, channel correlation and aperture size of receiver lens. The results of this study show that the most significant parameters that degrade the system performance. Furthermore, the obtained numerical results can be useful for designing, evaluating and enhancing the FSO system's ability to transmit wireless signal under actual conditions.

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Author Biographies

Fan Bai, Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan

Fan Bai received his B.E. degree in communication engineering from Changchun University of Science and Technology, Jilin Province, China, in 2007. From 2007 to 2010, he was with Beijing research and development center, ZTE Corporation, China, as system engineer. He received his M.Sc. degree in computer system and network engineering from the Waseda University, Japan, in 2013. He is currently pursuing his Ph.D. degree in Graduate School of Global Information and Telecommunication Studies (GITS), Waseda University, Japan. His research interests include optical wireless communications, optical fiber communications and digital signal processing. He is a student member of IEICE.

Yuwei Su, Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan

Yuwei Su was born in 1989 and received the B.E. degree from University of Electronic Science and Technoloy of China, Chengdu, China, in 2012. He received the M.S. Degree from Waseda University, Japan. He is currently working toward the Ph.D. degree in the School of Fundamental Science and Engineering, Waseda University. His areas of interests include wireless communication, free space optics and optical science and technology.

Takuro Sato, Graduate School of Globe Information and Telecommunication Studies, Waseda University, Tokyo 169-0072, Japan

Takuro Sato, professor. He received the Ph.D dgree in electronics from Niigata University, Japan, in 1994. From 1973 to 1995, he was with research and development laboratories, OKI electric Co., Ltd, Japan, as project leader. From 1995 to 2004, he was with department of information and electronics engineering, Niigata institute of technology, Japan, as professor. From 2004 to now, he was with graduate school of globe information and telecommunication studies as professor, Waseda university, Japan. His research interests include wireless communication, ICN/CCN, smart grid. Prof. Sato is a IEEE fellow, IEICE fellow.

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Published

2014-12-11

How to Cite

Bai, F. ., Su, Y. ., & Sato, T. . (2014). Performance Analysis of RoFSO Links with Diversity Reception for Transmission of OFDM Signals Under Correlated Log-normal Fading Channels. Journal of ICT Standardization, 2(2), 129–150. https://doi.org/10.13052/jicts2245-800X.224

Issue

2014: Vol 2 Iss 2

Section

Articles