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- Title
Optimal Time Allocation in Backscatter Assisted Wireless Powered Communication Networks.
- Authors
Bin Lyu; Zhen Yang; Guan Gui; Sari, Hikmet
- Abstract
This paper proposes a wireless powered communication network (WPCN) assisted by backscatter communication (BackCom). This model consists of a power station, an information receiver and multiple users that can work in either BackCom mode or harvest-then-transmit (HTT) mode. The time block is mainly divided into two parts corresponding to the data backscattering and transmission periods, respectively. The users first backscatter data to the information receiver in time division multiple access (TDMA) during the data backscattering period. When one user works in the BackCom mode, the other users harvest energy from the power station. During the data transmission period, two schemes, i.e., non-orthogonal multiple access (NOMA) and TDMA, are considered. To maximize the system throughput, the optimal time allocation policies are obtained. Simulation results demonstrate the superiority of the proposed model.
- Subjects
WIRELESS power transmission; BACKSCATTERING; WIRELESS sensor networks; TIME management; TIME division multiple access
- Publication
Sensors (14248220), 2017, Vol 17, Issue 6, p1258
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s17061258