Dao, Nhu-Ngoc; Pham, Quoc-Viet; Tu, Ngo Hoang; Thanh, Tran Thien; Bao, Vo Nguyen Quoc; Lakew, Demeke Shumeye; Cho, Sungrae
ArticleIssue Date2021CitationIEEE Communications Surveys and Tutorials, v.23, no.2, pp 1193 - 1225PublisherInstitute of Electrical and Electronics Engineers Inc.