TY - GEN
T1 - Chromatic dispersion monitoring by extended Kalman filter for coherent optical OFDM systems
AU - Du, Xinwei
AU - Li, Yan
AU - Gurusamy, Mohan
AU - Yu, Changyuan
AU - Kam, Pooi Yuen
PY - 2017/7/31
Y1 - 2017/7/31
N2 - his paper proposes to monitor the total accumulated chromatic dispersion (CD) by using extended Kalman filter (EKF) for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems. Accurate estimation performance can be achieved by only one OFDM training symbol. Simulations results show that the proposed EKF method can quickly converge to the exact dispersion value within 40 subcarriers. Besides, the influence of inter-carrier interference (ICI) induced by the carrier frequency offset (CFO) and laser phase noise (LPN) on the CD monitoring performance is also investigated. Even with the appearance of 3 GHz CFO and 200 kHz combined laser linewidth (CLW) and without compensation, the mean square error (MSE) and bit error rate (BER) of the proposed method vary little, which illustrate its good tolerance to the ICI.
AB - his paper proposes to monitor the total accumulated chromatic dispersion (CD) by using extended Kalman filter (EKF) for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems. Accurate estimation performance can be achieved by only one OFDM training symbol. Simulations results show that the proposed EKF method can quickly converge to the exact dispersion value within 40 subcarriers. Besides, the influence of inter-carrier interference (ICI) induced by the carrier frequency offset (CFO) and laser phase noise (LPN) on the CD monitoring performance is also investigated. Even with the appearance of 3 GHz CFO and 200 kHz combined laser linewidth (CLW) and without compensation, the mean square error (MSE) and bit error rate (BER) of the proposed method vary little, which illustrate its good tolerance to the ICI.
KW - Chromatic dispersion (CD)
KW - Coherent optical orthogonal frequency-division multiplexing (CO-OFDM)
KW - Extended Kalman filter (EKF)
UR - http://www.scopus.com/inward/record.url?scp=85044281693&partnerID=8YFLogxK
U2 - 10.1109/CLEOPR.2017.8118769
DO - 10.1109/CLEOPR.2017.8118769
M3 - Conference article published in proceeding or book
AN - SCOPUS:85044281693
T3 - 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
SP - 1
EP - 4
BT - 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
Y2 - 31 July 2017 through 4 August 2017
ER -