A novel asymmetrically clipped STTC for IM/DD MIMO atmospheric optical communications

Ming-hua Cao; Bo Xiao; Hui-qin Wang; Yue Zhang

doi:10.1117/12.2520202

14 February 2019 A novel asymmetrically clipped STTC for IM/DD MIMO atmospheric optical communications

Ming-hua Cao, Bo Xiao, Hui-qin Wang, Yue Zhang

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 1104817 (2019) https://doi.org/10.1117/12.2520202
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

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.

Citation Download Citation

Ming-hua Cao, Bo Xiao, Hui-qin Wang, and Yue Zhang "A novel asymmetrically clipped STTC for IM/DD MIMO atmospheric optical communications", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104817 (14 February 2019); https://doi.org/10.1117/12.2520202

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