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ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2018,12,27]]},"abstract":"<jats:p>The rise of the Internet of Things (IoT) has led to a significant increase in the number of connected devices that stream data in our homes, offices and industrial spaces. However, as the number of these devices increases, the costs of actively maintaining and replacing batteries becomes prohibitive at scale. Recent work on Quasistatic Cavity Resonance (QSCR), offers the possibility of seamless wireless power transfer (WPT) to receivers placed anywhere inside large indoor spaces. This work aims to solve two unexplored and critical missing pieces needed to realize this vision of ubiquitous WPT. First, we demonstrate a full end-to-end QSCR-based WPT system that is capable of simultaneously charging multiple custom designed nodes nearly anywhere in the 4.9 m x 4.9 m x 2.3 m test room. Second, this work utilizes the WPT mechanism as a communication channel, where nodes communicate with a centralized reader and to each other via load modulation. Through analysis and experiments, the proposed system shows that 10 receiver nodes can be safely and efficiently wirelessly charged and the end node to end node communication rate can achieve from 1 kbps without occurring any errors, up to 5 kbps with 6% BER while the end node to central unit can achieve 10 kbps without occurring any errors.<\/jats:p>","DOI":"10.1145\/3287066","type":"journal-article","created":{"date-parts":[[2018,12,27]],"date-time":"2018-12-27T19:28:03Z","timestamp":1545938883000},"page":"1-23","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":33,"title":["Room-Wide Wireless Charging and Load-Modulation Communication via Quasistatic Cavity Resonance"],"prefix":"10.1145","volume":"2","author":[{"given":"Takuya","family":"Sasatani","sequence":"first","affiliation":[{"name":"The University of Tokyo, Disney Research, JSPS Research Fellow"}]},{"given":"Chouchang Jack","family":"Yang","sequence":"additional","affiliation":[{"name":"Disney Research"}]},{"given":"Matthew J.","family":"Chabalko","sequence":"additional","affiliation":[{"name":"Disney Research"}]},{"given":"Yoshihiro","family":"Kawahara","sequence":"additional","affiliation":[{"name":"The University of Tokyo"}]},{"given":"Alanson P.","family":"Sample","sequence":"additional","affiliation":[{"name":"University of Michigan"}]}],"member":"320","published-online":{"date-parts":[[2018,12,27]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_2_1_1","DOI":"10.1016\/j.comnet.2010.05.010"},{"doi-asserted-by":"publisher","key":"e_1_2_2_2_1","DOI":"10.1109\/MCOM.2015.7081084"},{"doi-asserted-by":"publisher","key":"e_1_2_2_3_1","DOI":"10.1109\/TMTT.1984.1132833"},{"doi-asserted-by":"publisher","key":"e_1_2_2_4_1","DOI":"10.1063\/1.4904344"},{"doi-asserted-by":"publisher","key":"e_1_2_2_5_1","DOI":"10.1371\/journal.pone.0169045"},{"key":"e_1_2_2_6_1","first-page":"2","article-title":"Evaluation of wireless resonant power transfer systems with human electromagnetic exposure limits","volume":"55","author":"Christ Andreas","year":"2013","unstructured":"Andreas Christ , Mark G Douglas , John M Roman , Emily B Cooper , Alanson P Sample , Benjamin H Waters , Joshua R Smith , and Niels Kuster . 2013 . Evaluation of wireless resonant power transfer systems with human electromagnetic exposure limits . IEEE Transactions on Electromagnetic compatibility 55 , 2 (April 2013), 265--274. Andreas Christ, Mark G Douglas, John M Roman, Emily B Cooper, Alanson P Sample, Benjamin H Waters, Joshua R Smith, and Niels Kuster. 2013. Evaluation of wireless resonant power transfer systems with human electromagnetic exposure limits. IEEE Transactions on Electromagnetic compatibility 55, 2 (April 2013), 265--274.","journal-title":"IEEE Transactions on Electromagnetic compatibility"},{"key":"e_1_2_2_7_1","volume-title":"BLE-Backscatter: Ultralow-Power IoT Nodes Compatible With Bluetooth 4.0 Low Energy (BLE) Smartphones and Tablets","author":"Ensworth Joshua F","year":"2017","unstructured":"Joshua F Ensworth and Matthew S Reynolds . 2017. BLE-Backscatter: Ultralow-Power IoT Nodes Compatible With Bluetooth 4.0 Low Energy (BLE) Smartphones and Tablets . IEEE Transactions on Microwave Theory and Techniques 65, 9 ( Sept 2017 ), 3360--3368. Joshua F Ensworth and Matthew S Reynolds. 2017. BLE-Backscatter: Ultralow-Power IoT Nodes Compatible With Bluetooth 4.0 Low Energy (BLE) Smartphones and Tablets. IEEE Transactions on Microwave Theory and Techniques 65, 9 (Sept 2017), 3360--3368."},{"key":"e_1_2_2_8_1","volume-title":"EPC UHF Gen2 Air Interface Protocol. (April","author":"GS1 EPCglobal Inc. 2015.","year":"2015","unstructured":"GS1 EPCglobal Inc. 2015. EPC UHF Gen2 Air Interface Protocol. (April 2015 ). https:\/\/www.gs1.org\/standards\/epc-rfid\/uhf-air-interface-protocol\/2-0-1 ( Accessed on May 15, 2018). GS1 EPCglobal Inc. 2015. EPC UHF Gen2 Air Interface Protocol. (April 2015). https:\/\/www.gs1.org\/standards\/epc-rfid\/uhf-air-interface-protocol\/2-0-1 (Accessed on May 15, 2018)."},{"volume-title":"RFID handbook: fundamentals and applications in contactless smart cards, radio frequency identification and near-field communication","author":"Finkenzeller Klaus","unstructured":"Klaus Finkenzeller . 2010. RFID handbook: fundamentals and applications in contactless smart cards, radio frequency identification and near-field communication . John Wiley & Sons . Klaus Finkenzeller. 2010. RFID handbook: fundamentals and applications in contactless smart cards, radio frequency identification and near-field communication. 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