Dong Wang,Nian-yu Zou,Wei-dong Wang,Ying-hai Zhang.A channel estimation algorithm for optical orthogonal frequency division multiplexing systems[J].Optoelectronics Letters,2013,9(3):217-220 A channel estimation algorithm for optical orthogonal frequency division multiplexing systems Author Name Affiliation E-mail Dong Wang  Laboratory of Information and Electronics Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China  wangdong0607@163.com  Nian-yu Zou  Laboratory of Information and Electronics Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China    Wei-dong Wang  Laboratory of Information and Electronics Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China    Ying-hai Zhang  Laboratory of Information and Electronics Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China Research Institute of Photonics, Dalian Polytechnic University, Dalian, 116034, China    Abstract:       A simple channel estimation (CE) scheme, which is pilot-aided with just a little number of pilots inserted in the first half part of the subcarriers, is proposed and simulated for resisting the fiber dispersion in optical orthogonal frequency division multiplexing (OFDM) systems. The simulation results verify that the receiver sensitivity is improved by 2–3 dBm for bit error rate (BER) of 10?3 with the proposed CE algorithm than that with other kinds of CE algorithms based on linear square principle. The good constellation performance for a 40 Gbit/s transmission system can be also obtained by the proposed scheme. Hits: 5037 Download times: 81 View Full Text    Download reader