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Acta Optica Sinica, Volume. 38, Issue 8, 0806003(2018)

A Low-Complexity SLM Scheme for Peak-to-Average Power Ratio Reduction in IM/DD O-OFDM Systems

Congcong He*, Yating Wu*, Mengxin Han, [in Chinese], and Qianwu Zhang
Author Affiliations
  • Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
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    References (10)
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    Figures & Tables(8)
    Block diagram of the conventional SLM scheme

    Fig. 1. Block diagram of the conventional SLM scheme

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    Block diagram of the DMT structure

    Fig. 2. Block diagram of the DMT structure

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    Block diagram of the proposed cyclic shift addition SLM scheme

    Fig. 3. Block diagram of the proposed cyclic shift addition SLM scheme

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    Three segmentation methods. (a) Adjacent; (b) interleaved; (c) pseudo-random

    Fig. 4. Three segmentation methods. (a) Adjacent; (b) interleaved; (c) pseudo-random

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    PAPR performance comparison of three SLM schemes for different values of M and N. (a) N=32, M=4; (b) N=32, M=8; (c) N=64, M=4; (d) N=64, M=8

    Fig. 5. PAPR performance comparison of three SLM schemes for different values of M and N. (a) N=32, M=4; (b) N=32, M=8; (c) N=64, M=4; (d) N=64, M=8

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    Offline experimental setup for IM/DD optical OFDM system. (a) Schematic of experimental setup; (b) waveform of the electrical signal filtered out by LPF in transmitter; (c) spectrum of the electrical signal filtered out by LPF in transmitter

    Fig. 6. Offline experimental setup for IM/DD optical OFDM system. (a) Schematic of experimental setup; (b) waveform of the electrical signal filtered out by LPF in transmitter; (c) spectrum of the electrical signal filtered out by LPF in transmitter

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    RBE curves and constellations of original signal and signals with different SLM schemes

    Fig. 7. RBE curves and constellations of original signal and signals with different SLM schemes

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    • Table 1. Comparison of computational complexity of two schemes for different values of M and N

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      Table 1. Comparison of computational complexity of two schemes for different values of M and N

      ParameterScheme 1Scheme 2
      Con-SLMCSA-SLMRCCR0 /%Con-SLMCSA-SLMRCCR0 /%
      M,N,J4, 32, 24, 32, 1-8, 32, 48, 32, 1-
      Complexity(complex multiplications)3841925076819275
      Complexity(complex additions)76851233.3153664058.3
      M,N,J4, 64, 24, 64, 1-8, 64, 48, 64, 1
      Complexity(complex multiplications)89644850179244875
      Complexity(complex additions)1792115235.73584140860.7
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    Congcong He, Yating Wu, Mengxin Han, [in Chinese], Qianwu Zhang. A Low-Complexity SLM Scheme for Peak-to-Average Power Ratio Reduction in IM/DD O-OFDM Systems[J]. Acta Optica Sinica, 2018, 38(8): 0806003

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Feb. 2, 2018

    Accepted: Apr. 9, 2018

    Published Online: Sep. 6, 2018

    The Author Email:

    DOI:10.3788/AOS201838.0806003

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology