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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 28, Iss. 4 — Feb. 15, 2010
  • pp: 494–501

Real-Time 2.5 GS/s Coherent Optical Receiver for 53.3-Gb/s Sub-Banded OFDM

Noriaki Kaneda, Qi Yang, Xiang Liu, S. Chandrasekhar, William Shieh, and Young-Kai Chen

Journal of Lightwave Technology, Vol. 28, Issue 4, pp. 494-501 (2010)

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A real-time receiver for the coherent optical orthogonal frequency-division multiplexing (CO-OFDM) detection is realized in a field-programmable gate array (FPGA). Each building block of the CO-OFDM receiver, such as symbol synchronization, channel estimation, and phase estimation is described and discussed in respect of special technical requirements of real-time implementation. The real-time receiver is successfully demonstrated with a receiver sampling rate of 2.5-Gsamples/s to receive a subband of 53.3-Gb/s multiband CO-OFDM signal. The measured bit error rate (BER) is as low as $3.7\times 10^{-8}$ which is a record in real-time or offline CO-OFDM demonstration.

© 2010 IEEE

Noriaki Kaneda, Qi Yang, Xiang Liu, S. Chandrasekhar, William Shieh, and Young-Kai Chen, "Real-Time 2.5 GS/s Coherent Optical Receiver for 53.3-Gb/s Sub-Banded OFDM," J. Lightwave Technol. 28, 494-501 (2010)

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