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dc.contributor.authorJang, Junsu
dc.contributor.authorAdib, Fadel
dc.date.accessioned2021-11-02T18:04:01Z
dc.date.available2021-11-02T18:04:01Z
dc.date.issued2019
dc.identifier.urihttps://hdl.handle.net/1721.1/137147
dc.description.abstract© 2019 Association for Computing Machinery. We present Piezo-Acoustic Backscatter (PAB), the first technology that enables backscatter networking in underwater environments. PAB relies on the piezoelectric effect to enable underwater communication and sensing at near-zero power. Its architecture is inspired by radio backscatter which works well in air but cannot work well underwater due to the exponential attenuation of radio signals in water. PAB nodes harvest energy from underwater acoustic signals using piezoelectric interfaces and communicate by modulating the piezoelectric impedance. Our design introduces innovations that enable concurrent multiple access through circuit-based frequency tuning of backscatter modulation and a MAC that exploits the properties of PAB nodes to deliver higher network throughput and decode network collisions. We built a prototype of our design using custom-designed, mechanically fabricated transducers and an end-to-end battery-free hardware implementation.We tested our nodes in large experimental water tanks at the MIT Sea Grant. Our results demonstrate singlelink throughputs up to 3 kbps and power-up ranges up to 10 m. Finally, we show how our design can be used to measure acidity, temperature, and pressure. Looking ahead, the system can be used in ocean exploration, marine life sensing, and underwater climate change monitoring.en_US
dc.language.isoen
dc.publisherAssociation for Computing Machinery (ACM)en_US
dc.relation.isversionof10.1145/3341302.3342091en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceMIT web domainen_US
dc.titleUnderwater backscatter networkingen_US
dc.typeArticleen_US
dc.identifier.citationJang, Junsu and Adib, Fadel. 2019. "Underwater backscatter networking." SIGCOMM 2019 - Proceedings of the 2019 Conference of the ACM Special Interest Group on Data Communication.
dc.contributor.departmentMassachusetts Institute of Technology. Media Laboratory
dc.relation.journalSIGCOMM 2019 - Proceedings of the 2019 Conference of the ACM Special Interest Group on Data Communicationen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/ConferencePaperen_US
eprint.statushttp://purl.org/eprint/status/NonPeerRevieweden_US
dc.date.updated2021-06-22T17:54:26Z
dspace.orderedauthorsJang, J; Adib, Fen_US
dspace.date.submission2021-06-22T17:54:27Z
mit.licenseOPEN_ACCESS_POLICY
mit.metadata.statusAuthority Work and Publication Information Neededen_US


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