Simultaneous Uplink and Downlink Transmissions for Wireless Powered Communication Networks
- Authors
- Do, T.; Nguyen, V.; Shin, O.; An, B.
- Issue Date
- Feb-2019
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Wireless powered communication networks; full-duplex; sum-rate maximization; path-following algorithm
- Citation
- IEEE Communications Letters, v.23, no.2, pp.374 - 377
- Journal Title
- IEEE Communications Letters
- Volume
- 23
- Number
- 2
- Start Page
- 374
- End Page
- 377
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/30777
- DOI
- 10.1109/LCOMM.2018.2885303
- ISSN
- 1089-7798
- Abstract
- In this letter, we propose a novel simultaneous uplink (UL) and downlink (DL) transmission scheme aiming to achieve a higher spectral efficiency for wireless power communication networks (WPCNs). Specifically, by exploiting full-duplex (FD) radio and wireless power transfer techniques, an FD hybrid access point is able to communicate with a wireless powered UL user and a DL user over the same time-frequency resource. The optimization problem of interest is to maximize the sum-rate of the scheme under a given power budget, which is formulated as a nonconvex problem. To this end, we propose a low-complexity path-following algorithm for its solution. Numerical results reveal that the proposed scheme indeed achieves substantial sum-rate improvement for the WPCNs. IEEE
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