VPIphotonics – Modulation & Coding

  • 4D PS-QPSK vs. PDM-QPSK (FEC)


    This setup compares the noise performance of the 4D PS-QPSK and 2D PDM-QPSK modulation formats with and without FEC.

    Picture for 4D PS-QPSK vs. PDM-QPSK (FEC)

    » Keywords: PDM-QPSK, FEC, Modulation, Dual Polarization, Pol-Mux, Code, Hamming, LDPC, BER, 4D, Forward Error Correction, PS-QPSK
    » Available in: Optical System Demos

  • 4D Set-Partitioning Modulation


    The noise performance of the 4D set-partitioning SP32-16QAM format is compared with the performance of its dual-polarisation counterpart.

    Picture for 4D Set-Partitioning Modulation

    » Keywords: Modulation, Dual Polarization, Pol-Mux, SP32-16QAM, BER, 4D, Set-Partitioning
    » Available in: Optical System Demos

  • 8D Alamouti Coding for PDL Robust Coherent Transmission


    The demo illsutrates the use of multi-dimensional coding for polarization dependent loss (PDL)-robust transmission.

    Picture for 8D Alamouti Coding for PDL Robust Coherent Transmission

    » Keywords: Alamouti, PDL, Coding, Polarization Dependent Loss, N-dimensional
    » Available in: Optical System Demos

  • 8D Modulation Format for Inter-Channel Nonlinearities Reduction


    The demo illsutrates the use of multi-dimensional coding for WDM application.

    Picture for 8D Modulation Format for Inter-Channel Nonlinearities Reduction

    » Keywords: Inter-Channel, Coding, 8D, Nonlinearity, N-dimensional
    » Available in: Optical System Demos

  • Coded Modulation II: Multi-Dimensional Modulation using FEC and Time-Domain Hybrid Coding


    This demo illustrates the principle of coded modulation for coherent optical transmission systems.

    Picture for Coded Modulation II: Multi-Dimensional Modulation using FEC and  Time-Domain Hybrid Coding

    » Keywords: Ndim, QPSK, N-dimensional, Modulation, Coding, 8D, Coded, 16QAM, 4D
    » Available in: Optical System Demos

  • Concatenated Codes for Cycle Slip Detection and Correction


    This setup illustrates the principle of concatenated FEC codes for cycle slips detection & correction.

    Picture for Concatenated Codes for Cycle Slip Detection and Correction

    » Keywords: Error Correction, FEC, Reed Solomon, Coding, cycle slips, Hamming, LDPC
    » Available in: Optical System Demos

  • Probabilistic Shaping for Coherent Transmission


    Probabilistic shaping for rate-adaptive transmission.

    Picture for Probabilistic Shaping for Coherent Transmission

    » Keywords: QAM, coherent, probabilistic shaping, coded modulation
    » Available in: Optical System Demos

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