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    Communication through multi-layered acoustic electric channels

    Author
    Chakraborty, Soumya
    View/Open
    Chakraborty_rpi_0185E_10737.pdf (8.049Mb)
    Other Contributors
    Saulnier, Gary J.; Vastola, Kenneth S.; Schoch, Paul M.; Scarton, Henry A.;
    Date Issued
    2015-08
    Subject
    Electrical engineering
    Degree
    PhD;
    Terms of Use
    This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute (RPI), Troy, NY. Copyright of original work retained by author.;
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/20.500.13015/4967
    Abstract
    Single layered acoustic-electric channels have been used in the recent past to send power and data through metallic barriers wirelessly. These penetration-free solutions are valuable for maintaining the structural integrity while providing needed connec- tivity. Most of the previous work has considered single-layered channels, though in many applications one will encounter multi-layered channels that include one or more metallic barriers and fluid layers like water etc. This work presents communi- cation schemes that can be used to send data through such multi-layered acoustic- electric channels. First, the measured characteristics of several multi-layered acous- tic electric channels are presented and modeled, including those consisting water sandwiched between steel plates and concentric pipes as well as those that extend axially along a steel pipe. The channels are found to be very frequency selective. Second, low data rate, low complexity communication techniques are developed for these channels. Chirp-FSK and Chirp-OOK with non-coherent detection are studied through theoretical analysis and Monte-Carlo simulations using measured channel data. Chirp-OOK with energy detection is found to provide a good compromise be- tween performance and implementation simplicity. Hardware implementations are designed, constructed and tested on the actual channels. A standalone embedded design of the communication link is used to send at a rate of 100 bps using 5 mW of transmit power. Lastly, communication schemes to send data at higher rates (tens of kbps) through such multi-layered channels are considered. One such scheme, using a Decision Feedback Equalizer with 16-QAM modulation is found to be effective for one of the channels.;
    Description
    August 2015; School of Engineering
    Department
    Dept. of Electrical, Computer, and Systems Engineering;
    Publisher
    Rensselaer Polytechnic Institute, Troy, NY
    Relationships
    Rensselaer Theses and Dissertations Online Collection;
    Access
    Restricted to current Rensselaer faculty, staff and students in accordance with the Rensselaer Standard license. Access inquiries may be directed to the Rensselaer Libraries.;
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    • RPI Theses Online (Complete)

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