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Proceedings Paper

A novel asymmetrically clipped STTC for IM/DD MIMO atmospheric optical communications
Author(s): Ming-hua Cao; Bo Xiao; Hui-qin Wang; Yue Zhang
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Paper Abstract

Conventional space-time trellis code cannot be directly applied to the intensity modulation/direct detection atmospheric optical transmission systems due to the complex and negative signal problem. An asymmetrically clipped space-time trellis code scheme is proposed, which combines the Hermitian symmetry of the inverse fast Fourier transform and the N/4 points to N points signal mapping to make the processed bipolar signal sequence satisfies the odd harmonic symmetry. The conversion of complex signal to positive real signal can then be achieved by clipping the bipolar signal sequence. Monte Carlo method is utilized to verify the feasibility of the proposed scheme. The results show that the proposed method can effectively resist the atmosphere scintillation.

Paper Details

Date Published: 14 February 2019
PDF: 5 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104817 (14 February 2019); doi: 10.1117/12.2520202
Show Author Affiliations
Ming-hua Cao, Lanzhou Univ. of Technology (China)
Bo Xiao, State Grid Gansu Electric Power Co. (China)
Hui-qin Wang, Lanzhou Univ. of Technology (China)
Yue Zhang, Lanzhou Univ. of Technology (China)

Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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