On the Subcarrier Averaged Channel Estimation for Polarization Mode Dispersion CO-OFDM Systems

Mohamed B. El_Mashade, Ahmed M. Attiya and B. Mounir
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Mohamed B. El_Mashade: Electrical Engineering Dept., Faculty of Engineering, Al Azhar University, Nasr City, Cairo, Egypt
Ahmed M. Attiya: Electrical Engineering Dept., Faculty of Engineering, Al Azhar University, Nasr City, Cairo, Egypt
B. Mounir: Electrical Engineering Dept., Faculty of Engineering, Al Azhar University, Nasr City, Cairo, Egypt

Noble International Journal of Scientific Research, 2017, vol. 1, issue 1, 1-7

Abstract: A performance comparison among different channel estimation techniques for polarization division multiplexing coherent optical orthogonal frequency division multiplexing systems has been performed from the BER point of view. Our obtained results show that the subcarrier averaged over the maximum likelihood blind channel estimation method gives the best performance for low dispersed channels. However, for high dispersed channels, it cannot be applied directly to the blind estimated channel transfer function. So, we propose a new technique for it to be applied. The proposed algorithm makes the subcarrier averaged ML blind channel estimation to be superior in its performance.

Keywords: PDM; CO-OFDM; Channel Estimation; ICA (search for similar items in EconPapers)
Date: 2017
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