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Pre-equalization technique enabling 70 Gbit/s photonic-wireless link at 60 GHz.

F C Abrecht, R Bonjour, S Welschen

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    Summary
    This summary is machine-generated.

    Researchers achieved 70 Gbit/s wireless transmission using a 60 GHz photonic link with advanced 32QAM modulation. This breakthrough offers a cost-effective alternative for high-capacity wireless connections.

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    Area of Science:

    • Optical Communications
    • Wireless Networking
    • Signal Processing

    Background:

    • High-capacity wireless links are crucial for modern data demands.
    • Existing millimeter-wave solutions (e.g., E-band, sub-THz) can be costly.
    • The 60 GHz band offers unlicensed spectrum but faces bandwidth challenges.

    Purpose of the Study:

    • To demonstrate a high-capacity photonic wireless link at 60 GHz.
    • To introduce a novel pre-equalization technique for enhanced bandwidth utilization.
    • To evaluate the viability of the 60 GHz band for cost-effective, high-capacity wireless transmission.

    Main Methods:

    • Implementation of a photonic-based wireless link operating at 60 GHz.
    • Utilized 32 Quadrature Amplitude Modulation (32QAM) with a 14 GBd symbol rate.
    • Developed and applied a novel pre-equalization technique to manage high bandwidths.

    Main Results:

    • Successfully demonstrated a 70 Gbit/s data rate over the wireless link.
    • Achieved this capacity using a single radio frequency (RF) carrier and single polarization.
    • The pre-equalization technique proved effective for utilizing very high bandwidths at 60 GHz.

    Conclusions:

    • The 60 GHz band is a viable and cost-effective alternative for high-capacity photonic wireless transmission.
    • This technology can support applications like mobile backhauling and last-mile connectivity.
    • The demonstrated approach offers a promising solution compared to more expensive E-band or sub-THz links.