Joint Beamforming Design and Time Allocation for Wireless Powered Communication Networks
arXiv:1403.4492 · doi:10.1109/LCOMM.2014.2347958
Abstract
This paper investigates a multi-input single-output (MISO) wireless powered communication network (WPCN) under the protocol of harvest-then-transmit. The power station (PS) with reliable power supply can replenish the passive user nodes by wireless power transfer (WPT) in the downlink (DL), then each user node transmits independent information to the sink by a time division multiple access (TDMA) scheme in the uplink (UL). We consider the joint time allocation and beamforming design to maximize the system sum-throughput. The semidefinite relaxation (SDR) technique is applied to solve the nonconvex design problem. The tightness of SDR approximation, thus the global optimality, is proved. This implies that only one single energy beamformer is required at the PS. Then a fast semiclosed form solution is proposed by exploiting the inherent structure. Simulation results demonstrate the efficiency of the proposed algorithms from the perspectives of time complexity and information throughput.
9 pages, 3 figures, submitted to IEEE Communications Letters
References in corpus (8)
- Relaying Protocols for Wireless Energy Harvesting and Information Processing
- Power Allocation Strategies in Energy Harvesting Wireless Cooperative Networks
- Information and Energy Cooperation in Cognitive Radio Networks
- Coordinated Beamforming for Multiuser MISO Interference Channel under Rate Outage Constraints
- Wireless Information and Energy Transfer in Multi-Antenna Interference Channel
- Throughput Maximization in Wireless Powered Communication Networks
- Outage Constrained Robust Transmit Optimization for Multiuser MISO Downlinks: Tractable Approximations by Conic Optimization
- Wireless Networks with RF Energy Harvesting: A Contemporary Survey
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