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Square-Law Combining-Aided SIM/SM for Optical Wireless Communication
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 Title & Authors
Square-Law Combining-Aided SIM/SM for Optical Wireless Communication
Lee, Jeong-Ho; Hwang, Seung-Hoon;
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In this paper, we propose an SIM/SM system with a square-law combining. In an outdoor environment, the performance of SIM/SM deteriorates due to an atmospheric turbulence. The square-law combining technique can enhance the performance of the SIM/SM by employing square-and-integrate operation at the receiver side. For various spectral efficiencies, the performance gain increases as the number of photodetectors increases. Furthermore, as the turbulence strength increases, the performance gain also increases.
subcarrier intensity modulation;spatial modulation;square-law combining;
 Cited by
Z. Ghassemlooy, et al., Optical wireless communications system and channel modelling with matlab, 1st Ed., CRC Press, 2012.

Y. Cheng and S. H. Hwang, "Subcarrier intensity modulation / spatial modulation for optical wireless communications," J. KICS, vol. 38A, no. 12, pp. 1086-1093, Dec. 2013. crossref(new window)

W. O. Popoola, et al., "Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel," IET Optoelectronics, vol. 2, no. 1, pp. 16-23, Feb. 2008. crossref(new window)