Media type: E-Article Title: Spectrum efficiency maximization for cooperative power beacon-enabled wireless powered communication networks Contributor: Xu, Wenjun; Chen, Wei; Fan, Yongjian; Zhang, Zhi; Shi, Xinxin Published: Institute of Electrical and Electronics Engineers (IEEE), 2021 Published in: China Communications, 18 (2021) 12, Seite 230-251 Language: Without Specification DOI: 10.23919/jcc.2021.12.015 ISSN: 1673-5447 Origination: Footnote: