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Sen. Netw."],"published-print":{"date-parts":[[2022,11,30]]},"abstract":"<jats:p>Long communication range and low energy consumption are the two most important design goals of Low-power Wide-area Networks (LPWANs); however, many prior works have revealed that the performance of LPWAN in practical scenarios is not satisfactory. Although there are PHY-layer and link-layer approaches proposed to improve the performance of LPWAN, they either rely heavily on the hardware modifications or suffer from low data recovery capability, especially with bursty packet loss patterns. In this article, we propose a practical system, eLoRa, for COTS devices. eLoRa utilizes rateless codes and joint decoding with multiple gateways to extend the communication range and lifetime of LoRaWAN. To further improve the performance of LoRaWAN, eLoRa optimizes parameters of the PHY-layer (e.g., spreading factor) and the link layer (e.g, block length). We implement eLoRa on COTS LoRa devices and conduct extensive experiments on an outdoor testbed to evaluate the effectiveness of eLoRa. Results show that eLoRa can effectively improve the communication range of DaRe and LoRaWAN by 43.2% and 55.7% with a packet reception ratio higher than 60%, and increase the expected lifetime of DaRe and LoRaWAN by 18.3% and 46.6%.<\/jats:p>","DOI":"10.1145\/3544560","type":"journal-article","created":{"date-parts":[[2022,7,21]],"date-time":"2022-07-21T12:19:07Z","timestamp":1658405947000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["Exploiting Rateless Codes and Cross-layer Optimization for Low-power Wide-area Networks"],"prefix":"10.1145","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6673-722X","authenticated-orcid":false,"given":"Jiamei","family":"Lv","sequence":"first","affiliation":[{"name":"Zhejiang University and Alibaba-Zhejiang University Joint Institute of Frontier Technologies, Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7833-6458","authenticated-orcid":false,"given":"Gonglong","family":"Chen","sequence":"additional","affiliation":[{"name":"Zhejiang University and Alibaba-Zhejiang University Joint Institute of Frontier Technologies, Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0498-1494","authenticated-orcid":false,"given":"Wei","family":"Dong","sequence":"additional","affiliation":[{"name":"Zhejiang University and Alibaba-Zhejiang University Joint Institute of Frontier Technologies, Hangzhou, Zhejiang, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2023,1,31]]},"reference":[{"key":"e_1_3_1_2_2","unstructured":"2022. 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