NDLI: Throughput Maximization in Wireless Powered Communication Networks with Energy Saving

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Throughput Maximization in Wireless Powered Communication Networks with Energy Saving

Content Provider	CiteSeerX
Author	Wang, Rui Richard, D.
Abstract	Abstract—This paper considers a time division multiple access scenario where a wireless access point transmits to a group of users which harvest the energy and then use this energy to transmit back to the access point. Past approaches have found the optimal time allocation to maximize sum throughput under the assumption that the users must use all of their harvested power in each block of the “harvest-then-transmit ” protocol. This paper considers optimal time and energy allocation to maximize the sum throughput for the case when the nodes can save energy for later blocks. To maximize the sum throughput over a finite horizon, the initial optimization problem is separated into two sub-problems and finally can be formulated into a standard box-constrained optimization problem, which can be solved efficiently. A tight upper bound is derived by relaxing the energy harvesting causality. Simulation results are also provided to demonstrate the “harvest-then-transmit ” protocol with energy saving provides improved sum throughput increasing with the number of transmission blocks. Index Terms—wireless power transfer, energy harvesting, sum throughput maximization I.
File Format	PDF
Access Restriction	Open
Subject Keyword	Throughput Maximization Wireless Powered Communication Network Sum Throughput Harvest-then-transmit Protocol Optimal Time Past Approach Improved Sum Harvested Power Time Division Multiple Access Scenario Sum Throughput Maximization Access Point Index Term Tight Upper Bound Wireless Access Point Transmits Initial Optimization Problem Optimal Time Allocation Energy Allocation Standard Box-constrained Optimization Problem Simulation Result Transmission Block Energy Harvesting Finite Horizon Power Transfer
Content Type	Text
Resource Type	Article

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