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Multimodulus blind equalization algorithm based compensation for I/Q imbalance in OFDM optical fiber communication

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Abstract

The performance enhancement using multimodulus blind equalization algorithm for compensating in-phase/ quadrature-phase (I/Q) mismatch in orthogonal frequency division multiplexing optical communication system is investigated. The mathematical theory of I/Q imbalance is analyzed. Then, a compensation scheme with two-tap equalizer is implemented, with this scheme, the joint compensation of transmitter and receiver with optical channel that contains noise attenuation and chromatic dispersion is realized. Simulation shows that the performance degradation caused by I/Q imbalance can be compensated by the scheme with multimodulus blind equalization algorithm effectively regardless of the modulation order and channel distortion.

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Acknowledgments

This work was supported partly by National Natural Science Foundation of China (NSFC) under grant 61177066, partly by Jilin Provincial Science and Technology Department under grant 20120761, and also is supported by International Cooperation Foundation of Changchun Bureau of Science and Technology under grant 2011105.

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Authors and Affiliations

  1. Department of Optics Communication, College of Communication Engineering, Jilin University, 5372 Nanhu Road, Changchun, 130012, People’s Republic of China

    Li Zhaoxi, Hu Guijun, Jiang Shan, Li Jinghe & Wang Yanping

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  1. Li Zhaoxi
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  2. Hu Guijun
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  3. Jiang Shan
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  4. Li Jinghe
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  5. Wang Yanping
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Correspondence to Hu Guijun.

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Zhaoxi, L., Guijun, H., Shan, J. et al. Multimodulus blind equalization algorithm based compensation for I/Q imbalance in OFDM optical fiber communication. Opt Quant Electron 47, 2221–2229 (2015). https://doi.org/10.1007/s11082-014-0098-6

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  • DOI: https://doi.org/10.1007/s11082-014-0098-6

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