| Li Li,Di Wu,Li Han,Gui-jun Hu.TWA-based channel estimation for CO-OFDM systems[J].Optoelectronics Letters,2014,10(2):133-136 |
| TWA-based channel estimation for CO-OFDM systems |
| Author Name | Affiliation | E-mail | | Li Li | College of Communication Engineering, Jilin University, Changchun, 130012, China | | | Di Wu | College of Communication Engineering, Jilin University, Changchun, 130012, China | | | Li Han | College of Physics, Jilin University, Changchun, 130012, China | hanl@jlu.edu.cn | | Gui-jun Hu | College of Communication Engineering, Jilin University, Changchun, 130012, China | |
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| Abstract: |
| An efficient channel estimation method called time-domain weighted average (TWA) algorithm is proposed for coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems. On the premise of calculating the associated weight of channel transfer function, a more exact channel characteristic is obtained by calculating the weighted average of the pilot transfer function in this algorithm. Compared with time-domain average (TA) algorithm, the TWA algorithm can reach the same bit error rate (BER) with fewer pilots, and it improves the performance of CO-OFDM systems. |
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| This work has been supported by the National Natural Science Foundation of China （No.61177066）. |
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