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- Title
Energy Efficiency Optimization for AF Relaying with TS-SWIPT.
- Authors
Lu, Guangyue; Lei, Chan; Ye, Yinghui; Shi, Liqin; Wang, Tianci
- Abstract
In this paper, we focus on energy efficiency (EE) maximization for simultaneous wireless information and power transfer (SWIPT) based energy-constrained and amplify-and-forward (AF) relay networks. We adopt low-complexity time-switching (TS) protocol to realize SWIPT at the energy-constrained relay node, and formulate an EE maximization problem in which TS factor and transmit power control are needed to be jointly optimized. Since the formulated problem is non-convex and difficult to solve, we propose an algorithm combining fractional programming and alternating convex optimization to optimize TS factor and transmit power iteratively with low complexity. Simulation results are provided to demonstrate the convergence of the proposed algorithm, as well as the performance gains in terms of EE compared with other existing schemes.
- Subjects
ENERGY consumption; POWER transmission; FRACTIONAL programming; ALGORITHMS; ENERGY management
- Publication
Energies (19961073), 2019, Vol 12, Issue 6, p993
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en12060993