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Energy Efficiency Optimization for AF Relaying with TS-SWIPT

Author

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  • Guangyue Lu

    (The Shaanxi Key Laboratory of Information Communication Network and Security, Xi’an University of Posts and Telecommunications, Xi’an 710121, China)

  • Chan Lei

    (The Shaanxi Key Laboratory of Information Communication Network and Security, Xi’an University of Posts and Telecommunications, Xi’an 710121, China)

  • Yinghui Ye

    (School of Telecommunications Engineering, Xidian University, Xi’an 710071, China)

  • Liqin Shi

    (School of Telecommunications Engineering, Xidian University, Xi’an 710071, China)

  • Tianci Wang

    (The Shaanxi Key Laboratory of Information Communication Network and Security, Xi’an University of Posts and Telecommunications, Xi’an 710121, China)

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.

Suggested Citation

  • Guangyue Lu & Chan Lei & Yinghui Ye & Liqin Shi & Tianci Wang, 2019. "Energy Efficiency Optimization for AF Relaying with TS-SWIPT," Energies, MDPI, vol. 12(6), pages 1-13, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:6:p:993-:d:213867
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    References listed on IDEAS

    as
    1. Zaki Masood & Sokhee P. Jung & Yonghoon Choi, 2018. "Energy-Efficiency Performance Analysis and Maximization Using Wireless Energy Harvesting in Wireless Sensor Networks," Energies, MDPI, vol. 11(11), pages 1-15, October.
    2. Yu Min Hwang & Ji Ho Park & Yoan Shin & Jin Young Kim & Dong In Kim, 2017. "Transmission Power and Antenna Allocation for Energy-Efficient RF Energy Harvesting Networks with Massive MIMO," Energies, MDPI, vol. 10(6), pages 1-18, June.
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    Cited by:

    1. Van-Duc Phan & Tan N. Nguyen & Minh Tran & Tran Thanh Trang & Miroslav Voznak & Duy-Hung Ha & Thanh-Long Nguyen, 2019. "Power Beacon-Assisted Energy Harvesting in a Half-Duplex Communication Network under Co-Channel Interference over a Rayleigh Fading Environment: Energy Efficiency and Outage Probability Analysis," Energies, MDPI, vol. 12(13), pages 1-14, July.

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    1. Van-Duc Phan & Tan N. Nguyen & Minh Tran & Tran Thanh Trang & Miroslav Voznak & Duy-Hung Ha & Thanh-Long Nguyen, 2019. "Power Beacon-Assisted Energy Harvesting in a Half-Duplex Communication Network under Co-Channel Interference over a Rayleigh Fading Environment: Energy Efficiency and Outage Probability Analysis," Energies, MDPI, vol. 12(13), pages 1-14, July.

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