Communication through multi-layered acoustic electric channels

Authors
Chakraborty, Soumya
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Other Contributors
Vastola, Kenneth S.
Schoch, Paul M.
Scarton, Henry A.
Saulnier, Gary J.
Issue Date
2015-08
Keywords
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.
Full Citation
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
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