Chinese Optics Letters, Volume. 14, Issue 5, 050608(2016)

Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm

Jie Su*, Xinying Li, and Jianjun Yu
Author Affiliations
  • Education Ministry Key Laboratory of Electromagnetic Wave Information Science, Information Science and Engineering School, Fudan University, Shanghai 200433, China
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    Figures & Tables(6)
    System structure of conventional DD-OFDM (Tx, transmitter, Rx, receiver; PRBS, pseudo random bit sequence; DAC, digital-to-analogue conversion; LPF, low-pass filter; EDFA, erbium-doped fiber amplifier).
    Principle of DFT-spread OFDM modulation and demodulation.
    Experimental setup for a 32 Gbaud OFDM-QPSK signal with 7 km SMF-28 transmission utilizing single-arm MZM in DD system (EA, electrical amplifier; OSC, oscilloscope).
    Constellation comparison of a 32 Gbaud QPSK after 7 km SMF-28 transmission when the input power into the PD is −6.5 dBm.
    Constellation comparison of a 32 Gbaud QPSK after 7 km SMF-28 transmission when the input power into the PD is −8.7 dBm utilizing different technologies.
    Curves of BER versus input power into a PD utilizing different techniques.
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    Jie Su, Xinying Li, Jianjun Yu. Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm[J]. Chinese Optics Letters, 2016, 14(5): 050608

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Oct. 12, 2015

    Accepted: Mar. 11, 2016

    Published Online: Aug. 6, 2018

    The Author Email: Jie Su (jiesu12@fudan.edu.cn)

    DOI:10.3788/COL201614.050608

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