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Channel estimation and iterative equalization for long-haul coherent optical OFDM communication systems

Shoreh, M. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/ConTEL.2015.7231185
  3. Abstract:
  4. In this paper, we propose an iterative block equalizer for long-haul Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) communication systems. The proposed scheme is based on a soft Minimum Mean-Squared Error (MMSE) iterative block equalizer. Two different channel estimation methods are also discubed. The performance and computational complexity of the proposed iterative equalization and channel estimation techniques are evaluated as well. The obtained Bit Error Rate (BER) performance reveal that the iterative equalizer outperforms the linear equalizers by almost two orders of magnitude
  5. Keywords:
  6. Channel estimation ; Iterative equalizer ; Long-haul fiber optic channels ; Bit error rate ; Channel estimation ; Equalizers ; Frequency division multiplexing ; Frequency estimation ; Iterative methods ; Mean square error ; Multiplexing ; Optical communication ; Optical fiber communication ; Bit error rate (BER) performance ; Channel estimation method ; Coherent optical orthogonal frequencydivision multiplexing (CO-OFDM) ; Fiber optic channel ; Iterative equalization ; Iterative equalizers ; Minimum mean squared error ; Orthogonal frequencies ; Orthogonal frequency division multiplexing
  7. Source: Proceedings of the 13th International Conference on Telecommunications, ConTEL 2015 ; 2015 ; 9781479989720 (ISBN)
  8. URL: http://ieeexplore.ieee.org/document/7231185/?arnumber=7231185