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Related Experiment Video

Updated: Nov 11, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Indoor optical wireless communication system with continuous and simultaneous positioning.

Ke Wang, Tingting Song, Sithamparanathan Kandeepan

    Optics Express
    |March 27, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a filter-enhanced optical wireless communication (OWC) positioning scheme. It enables simultaneous high-speed data transmission and accurate indoor positioning without compromising communication rates.

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    Area of Science:

    • Optical Wireless Communication (OWC)
    • Indoor Positioning Systems
    • Signal Processing

    Background:

    • Indoor optical wireless communication (OWC) offers high-speed data transmission.
    • Received Signal Strength (RSS) methods are used for OWC positioning but often reduce data rates.
    • Existing methods require dedicated resources for positioning, limiting system throughput.

    Purpose of the Study:

    • To develop an OWC positioning scheme that integrates seamlessly with communication.
    • To eliminate the need for dedicated positioning resources in OWC systems.
    • To enable simultaneous high-speed communication and accurate indoor positioning.

    Main Methods:

    • Application of spatial waveform shaping filters to OWC transmitters.
    • Utilizing matched filters at the receiver for signal separation.
    • Directly extracting RSS information from the communication signal.

    Main Results:

    • Experimental demonstration in a near-infrared OWC system achieved 5.41 cm positioning accuracy.
    • Simultaneous wireless communication data rate of 2.5 Gb/s was maintained.
    • Feasibility verified via simulations for Visible Light Communication (VLC) systems.

    Conclusions:

    • The filter-enhanced scheme enables OWC positioning without impacting communication data rate or throughput.
    • Continuous and real-time tracking is achievable by using the communication signal for positioning.
    • This method presents a promising solution for integrated communication and positioning in indoor OWC systems.