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Carrier recovery in coherent receiver of optical orthogonal frequency division multiplexing system

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Abstract

In this paper, we reviewed our common phase error (CPE) and intercarrier interference (ICI) compensation methods for coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. We first presented a unified CPE estimation framework combining decision-aided (DA), pilot-aided (PA) and decision feedback (DF) algorithms. The DA method is used to estimate the CPE of the current OFDM symbol based on the decision statistics of the previous symbol. DA + PA helps increase the phase noise tolerance of DA and reduce the overhead of PA, while DA + DF reduces the overhead to zero, achieving best performance with one more step of estimation, compensation and demodulation. We also described a modified time-domain blind intercarrier interference (BL-ICI) mitigation algorithm over nonconstant amplitude formats. The new algorithm is derived from the BL-ICI algorithm over constant amplitude format for wireless networks. A new power estimation scheme was proposed for the BL-ICI algorithm to adapt to nonconstant amplitude format. It has the same order of complexity with frequency domain decision-aided ICI (DA-ICI) compensation method and does not suffer from symbol decision errors. The effectiveness of both CPE and ICI compensation algorithms were demonstrated in a simulated 56-Gbit/s CO-OFDM system with various modulation formats.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore

    Changyuan Yu & Pooi-Yuen Kam

  2. A*STAR Institute for Infocomm Research (I2R), Singapore, 138632, Singapore

    Changyuan Yu & Shengjiao Cao

Authors
  1. Changyuan Yu
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  2. Pooi-Yuen Kam
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  3. Shengjiao Cao
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Corresponding author

Correspondence to Changyuan Yu.

Additional information

Changyuan Yu has been an assistant professor at Department of Electrical and Computer Engineering, National University of Singapore since 12/2005. He is also a 25% joint senior scientist with A*STAR Institute for Infocomm Research. He received the B.S. degree in applied physics and B. Economics degree in management from Tsinghua University, China in 1997, the M.S. degree in electrical and computer engineering from the University of Miami, USA in 1999, and the Ph.D. degree in electrical engineering from the University of Southern California, USA in 2005. He was a visiting researcher at NEC Labs America in 2005. His research focuses on photonic devices, subsystems, and optical fiber communication and sensor systems. Dr. Yu has authored/coauthored 6 book chapters and over 200 research papers on the peer reviewed journals and the prestigious conferences (32 invited). He has served in technical program committee or organizing committee for over 40 international conferences. He won IEEE/LEOS Graduate Student Fellowship Award in 2004.

Pooi-Yuen Kam was born in Ipoh, Malaysia, and educated at the Massachusetts Institute of Technology, Cambridge, Mass., USA, where he obtained the S.B., S.M., and Ph.D. degrees in electrical engineering in 1972, 1973, and 1976, respectively. From 1976 to 1978, he was a member of the technical staff at the Bell Telephone Laboratories, Holmdel, N.J., USA, where he was engaged in packet network studies. Since 1978, he has been with the Department of Electrical and Computer Engineering, National University of Singapore, where he is now a professor. He served as the Deputy Dean of Engineering and the Vice Dean for Academic Affairs, Faculty of Engineering of the National University of Singapore, from 2000 to 2003. His research interests are in the communication sciences and information theory, and their applications to wireless and optical communications. He spent the sabbatical year 1987 to 1988 at the Tokyo Institute of Technology, Tokyo, Japan, under the sponsorship of the Hitachi Scholarship Foundation. In 2006, he was invited to the School of Engineering Science, Simon Fraser University, Burnaby, B.C., Canada, as the David Bested Fellow.

Dr. Kam is a member of Eta Kappa Nu, Tau Beta Pi, and Sigma Xi. Since September 2011, he is a senior editor of the IEEE Wireless Communications Letters. From 1996 to 2011, he served as the Editor for Modulation and Detection for Wireless Systems of the IEEE Transactions on Communications. He also served on the editorial board of PHYCOM, the Journal of Physical Communications of Elsevier, from 2007 to 2012. He was elected a Fellow of the IEEE for his contributions to receiver design and performance analysis for wireless communications. He received the Best Paper Award at the IEEE VTC2004-Fall, at the IEEE VTC2011-Spring, and at the IEEE ICC2011.

Shengjiao Cao has been working in A*STAR Institute of Inforcomm Research, Singapore since 3/2014. She received the B. E. degree in Department of Automation from Tsinghua University, China in 2009 and the Ph.D. degree in electrical and computer engineering from National University of Singapore in 2014. Her research interests include digital signal processing and LDPC codes for coherent optical OFDM system.

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Yu, C., Kam, PY. & Cao, S. Carrier recovery in coherent receiver of optical orthogonal frequency division multiplexing system. Front. Optoelectron. 7, 348–358 (2014). https://doi.org/10.1007/s12200-014-0449-8

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  • DOI: https://doi.org/10.1007/s12200-014-0449-8

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