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During its flight period, the UAV can collect data from IoTDs and take advantage of the simultaneous wireless information and power transfer technology to charge the batteries of IoTDs. With the aid of NOMA, spectrum efficiency has been improved. We aim to prolong the lifetime of the IoT network, via jointly optimizing the UAV trajectory, the time allocation for information communication and wireless power transfer, the IoTDs\u2019 transmit power, as well as the IoTDs\u2019 group scheduling for NOMA. Then, we use the block coordinate decent and successive convex approximation techniques to tackle the non-convexity of the formulated problem. Numerical results show that the proposed solution increases the residual energy of the IoTDs, thus prolonging the lifetime of the network.<\/jats:p>","DOI":"10.1186\/s13638-023-02307-7","type":"journal-article","created":{"date-parts":[[2023,9,13]],"date-time":"2023-09-13T16:02:35Z","timestamp":1694620955000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Residual energy maximization for NOMA-enabled UAV-assisted data collection network: trajectory optimization and resource allocation"],"prefix":"10.1186","volume":"2023","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2870-614X","authenticated-orcid":false,"given":"Yu","family":"Du","sequence":"first","affiliation":[]},{"given":"Yijun","family":"Guo","sequence":"additional","affiliation":[]},{"given":"Jianjun","family":"Hao","sequence":"additional","affiliation":[]},{"given":"Hao","family":"Zhu","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,9,13]]},"reference":[{"issue":"4","key":"2307_CR1","doi-asserted-by":"publisher","first-page":"2233","DOI":"10.1109\/TII.2014.2300753","volume":"10","author":"L Da Xu","year":"2014","unstructured":"L. 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