An improved channel estimation algorithm for CO-OFDM system and its performance analysis

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An improved channel estimation algorithm for CO-OFDM system and its performance analysis
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                        Shuai ZhangShuai Zhang
Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, 252059, China
;State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
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Shun-chang BaiShun-chang Bai
School of Advanced Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China
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Cheng-lin BaiCheng-lin Bai
Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, 252059, China
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Qing-long LuoQing-long Luo
Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, 252059, China
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Wen-jing FangWen-jing Fang
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
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Fund Project:This work has been supported by the National Natural Science Foundation of China （No.61047033）, the Natural Science Foundation of Shan dong Province in China （No.ZR2010FM043） and the State Key Laboratory of Advanced Optical Communication Systems and Networks （No.2011GZKF031109）.

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Abstract:

We present an extra processing added to conventional least square (LS) channel estimation to further improve its performance in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. The influence of noise, chromatic dispersion and polarization mode dispersion on the performance of the proposed algorithm is analyzed. The simulation results show that the improved algorithm has better performance and lower complexity.

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Shuai Zhang, Shun-chang Bai, Cheng-lin Bai, Qing-long Luo, Wen-jing Fang. An improved channel estimation algorithm for CO-OFDM system and its performance analysis[J]. Optoelectronics Letters,2014,10(2):140-143

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