Application of intra-symbol frequency domain averaging algorithm in IM/DD 16QAM OFDM

Shuailong Yang; Fengguang Luo; Liu Yang; Biyu You; Yao Ni; Danhui Chen; Bin Li; Deming Liu

doi:10.1117/12.2522657

10 May 2019 Application of intra-symbol frequency domain averaging algorithm in IM/DD 16QAM OFDM

Shuailong Yang, Fengguang Luo, Liu Yang, Biyu You, Yao Ni, Danhui Chen, Bin Li, Deming Liu

Proceedings Volume 11068, Second Symposium on Novel Technology of X-Ray Imaging; 1106804 (2019) https://doi.org/10.1117/12.2522657
Event: Second Symposium on Novel Technology of X-Ray Imaging, 2018, Hefei, China

Abstract

We apply the intra-symbol frequency domain averaging (ISFA) channel estimation algorithm to the intensity modulation and direct detection (IM/DD) 16QAM orthogonal frequency division multiplexing (OFDM) system and improve the performance of the system. In the paper, the weighting coefficients in the algorithm are changed to obtain the best system performance. In order to study the applicability of the algorithm, the number of different subcarriers is simulated and better system performance is obtained. In the case of changing the transmission distance, we compare the performance of traditional algorithms and ISFA.

Citation Download Citation

Shuailong Yang, Fengguang Luo, Liu Yang, Biyu You, Yao Ni, Danhui Chen, Bin Li, and Deming Liu "Application of intra-symbol frequency domain averaging algorithm in IM/DD 16QAM OFDM", Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 1106804 (10 May 2019); https://doi.org/10.1117/12.2522657

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KEYWORDS

Orthogonal frequency division multiplexing

Computer simulations

Digital signal processing

Modulation

Optical amplifiers

Receivers

Transmitters

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