Research Article
Joint Transmit Power Allocation and Power Splitting for SWIPT System with Time Reversal
@INPROCEEDINGS{10.1007/978-3-030-32216-8_41, author={Zuoliang Liu and Shanxue Chen}, title={Joint Transmit Power Allocation and Power Splitting for SWIPT System with Time Reversal}, proceedings={Simulation Tools and Techniques. 11th International Conference, SIMUtools 2019, Chengdu, China, July 8--10, 2019, Proceedings}, proceedings_a={SIMUTOOLS}, year={2019}, month={10}, keywords={Time reversal Simultaneous wireless information and power transfer Energy efficiency optimization}, doi={10.1007/978-3-030-32216-8_41} }- Zuoliang Liu
Shanxue Chen
Year: 2019
Joint Transmit Power Allocation and Power Splitting for SWIPT System with Time Reversal
SIMUTOOLS
Springer
DOI: 10.1007/978-3-030-32216-8_41
Abstract
In the simultaneous wireless information and power transfer (SWIPT) system, time reversal (TR) is a special signal processing technology used to enhance the signal strength at the receiving end and improve the signal-to-noise ratio. In this paper, we study the joint transmit power allocation and power splitting algorithm for SWIPT system with TR. Considering a multi-input and single-output (MISO) SWIPT communication system, TR is introduced to construct a novel channel model, and the closed-form expression of energy efficiency (EE) is analyzed. An important problem is to maximize the energy efficiency by jointly transmit power allocation and power splitting, which is a two-element fractional non-convex problem. To solve it, we transform this problem to a convex optimization problem by a parametric method, and then solve it by one-dimensional search and CVX. Numerical results are provided to validate our proposed algorithm.
