Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Performance optimization of PM-16QAM transmission system enabled by real-time self-adaptive coding.

Zhen Qu, Yao Li, Weiyang Mo

    Optics Letters
    |October 14, 2017
    PubMed
    Summary

    This study demonstrates adaptive coding for high-speed optical transmission. Self-adaptive low-density parity-check (LDPC) codes significantly boost net capacity in WDM systems.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Association between Serum Neurofilament Light Chain Levels and the Predicted 10-Year Atherosclerotic Cardiovascular Disease Risk.

    International heart journal·2026
    Same author

    Field re-entrant superconductivity in Eu-doped infinite-layer nickelates.

    Nature·2026
    Same author

    Thiol-phenolic interactions in electropolymerized methimazole enable superior isomer discrimination for hydroquinone and catechol sensing.

    The Analyst·2026
    Same author

    Realizing Shor's algorithm with topological acoustic phase bits.

    Communications engineering·2026
    Same author

    Enhanced superconductivity and mixed-dimensional behaviour in infinite-layer samarium nickelate thin films.

    Nature communications·2026
    Same author

    Combination of electronic structure regulation and controllable phase transition engineering for urea-assisted energy-saving hydrogen production.

    Journal of colloid and interface science·2026

    Area of Science:

    • Optical Communications
    • Digital Signal Processing
    • Information Theory

    Background:

    • High-capacity optical transmission systems are crucial for modern networks.
    • Adapting to changing channel conditions is key for efficient data transmission.
    • Polarization multiplexed 16 quadrature amplitude modulation (16-QAM) is a spectrally efficient modulation format.

    Purpose of the Study:

    • To experimentally demonstrate a self-adaptive coded transmission system.
    • To improve the net capacity of WDM polarization multiplexed 16-QAM systems.
    • To investigate the impact of adaptive low-density parity-check (LDPC) coding on transmission performance.

    Main Methods:

    • Implementation of a real-time control plane for adaptive coding.
    • Real-time optical signal-to-noise ratio (OSNR) measurement and feedback.

    Related Experiment Videos

  • Adaptive encoding using three types of LDPC codes (rates 0.8, 0.75, 0.7) based on OSNR.

    • Main Results:

    • Successful demonstration of 5x100 Gb/s WDM 16-QAM transmission over 100 km fiber.
    • Achieved average net capacity improvements of 102%, 36%, and 7.5% with adaptive LDPC coding.
    • Measured code-adaptation latency of 2273 ms.

    Conclusions:

    • Self-adaptive LDPC coding is an effective strategy for enhancing optical transmission capacity.
    • Real-time OSNR monitoring and control plane logic enable dynamic code adaptation.
    • The proposed system offers significant performance gains compared to non-adaptive transmission.