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Updated: Oct 28, 2025

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Photonic computing to accelerate data processing in wireless communications.

Mahsa Salmani, Armaghan Eshaghi, Enxiao Luan

    Optics Express
    |July 16, 2021
    PubMed
    Summary
    This summary is machine-generated.

    Photonic computing offers a solution for the high computational demands of massive multiple-input multiple-output (MIMO) systems in 5G networks. This approach significantly improves time and energy efficiency without compromising system performance.

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    Area of Science:

    • Electrical Engineering
    • Computer Science
    • Optics

    Background:

    • Massive MIMO systems are crucial for 5G wireless networks, demanding high spectral efficiency, low latency, and reliability.
    • The computational complexity of massive MIMO signal processing exceeds the capabilities of conventional digital electronics like FPGAs and ASICs.
    • Existing digital computing methods struggle to meet the stringent energy and latency requirements for massive MIMO base stations.

    Purpose of the Study:

    • To introduce a novel photonic computing approach for massive MIMO systems.
    • To address the computational complexity and energy/latency challenges in massive MIMO signal processing.
    • To enable photonic computing to handle complex-valued data typical in wireless communications.

    Main Methods:

    • Exploiting the speed and lossless propagation of light for computation.
    • Implementing multiply-accumulate (MAC) operations using a broadcast-and-weight (B&W) photonic architecture.
    • Developing preprocessing steps to adapt the B&W architecture for arbitrary complex-valued inputs.

    Main Results:

    • The proposed photonic computing architecture successfully handles complex-valued inputs required for wireless systems.
    • Numerical analysis confirms no performance degradation in the wireless communication system.
    • Significant improvements in time and energy efficiency were observed compared to Graphics Processing Units (GPUs).

    Conclusions:

    • Photonic computing, specifically the B&W architecture with preprocessing, is a viable solution for massive MIMO computational challenges.
    • This approach offers substantial gains in energy and time efficiency for future wireless networks.
    • The technology paves the way for more powerful and efficient 5G and beyond wireless communication systems.