Joint Time Allocation and Power Splitting Schemes for DF Energy Harvesting Relaying Networks

Wang, Dan; Li, Yongzhao; Ye, Yinghui; Xia, Huang; Zhang, Hailin

doi:10.1109/vtcfall.2017.8288115

Cited by 10 publications

(13 citation statements)

References 17 publications

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“…Hence, the received SNR at R i after the second phase is given in (13) and the SNR of the first hop is given in (14).…”

Section: Hybrid Relaying (Hr) Protocolmentioning

confidence: 99%

“…Currently, a feasible solution is to adopt the radio frequency (RF) signal-based wireless energy transfer (WET) technique [2], as RF signal is controllable, stable, By integrating WET and wireless data communications, wireless powered communication network (WPCN) [3][4][5][6][7][8] has raised as an emerging research topic. Up to now, the most popular research model under WPCN was the threenode relay network [9][10][11][12][13][14], in which the "harvest-thentransmit" (HTT) scheme was employed, i.e., the singleantenna relay node was energy constrained and had to harvest energy from the single-antenna source firstly, and then exploited the harvested energy to forward the source information to the single-antenna destination under the case of no direct link. Under this scene, [9] firstly proposed the time switching-based relaying (TSR) protocol and the power splitting-based relaying (PSR) protocol.…”

Section: Introductionmentioning

confidence: 99%

“…Assuming existing direct source to destination link, [12] analyzed the outage probability and optimized the network performance under the PSR protocol and showed that the large diversity gain can be obtained by exploiting the direct link. By adjusting the number of subframes for each link, [13,14] set the different information transmission rate at the source and the relay, based on which [13,14] further proposed several generalized HR protocols.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Joint design of beamforming and time switching/power splitting for wireless-powered multi-antenna dual-relay network

Hu¹,

Cai²,

Liang³

et al. 2019

J Wireless Com Network

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In this paper, we consider a wireless-powered dual-relay network consisting of one multi-antenna source, two single-antenna energy-constrained relays and one single-antenna destination without direct source to destination link. In order to establish the communication flow, the energy-constrained relays harvest energy from the radio frequency transmitted by the source firstly, then exploit the harvested energy to forward the source information to the destination based on distributed space time coding (DSTC). Under this network architecture, three decode-and-forward (DF) technique-based relaying protocols, i.e., time switching-based relaying (TSR) protocol, power splitting-based relaying (PSR) protocol, and hybrid relaying (HR) protocol, are considered to drive the energy transfer and information transmission. To maximize the network throughput, the joint design for the optimal energy and information beamforming vectors employed at the source, the optimal time switching, and power splitting ratios under these three protocols are investigated and solved efficiently by employing simple sequential optimization approach or alternating optimization approach. Simulations are conducted to show the superior performance achieved by our proposed scheme. Moreover, we find that the TSR protocol outperforms the PSR protocol in the low signal-to-noise ratio (SNR) region, while the latter outperforms the former in the high SNR region. And the HR protocol achieves the best performance in any SNR region. At the same time, the effect of the relays' locations on the throughput performance of these three protocols is also investigated.

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“…Hence, the received SNR at R i after the second phase is given in (13) and the SNR of the first hop is given in (14).…”

Section: Hybrid Relaying (Hr) Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Joint design of beamforming and time switching/power splitting for wireless-powered multi-antenna dual-relay network

Hu¹,

Cai²,

Liang³

et al. 2019

J Wireless Com Network

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show abstract

“…Energy harvesting (EH) has turned up to be vital in different wireless network models to deal with the limited power supply and storage at transceivers, such as at sensor nodes in wireless sensor networks [8]- [11]. Many EH techniques have been integrated into the devices to prolong the lifetime of energy-constrained wireless networks [12], [13]. The EH circuits can perform simultaneous wireless information and power transfer (SWIPT) which can be used in various critical environment, such as healthcare, disaster, rescue, etc.…”

Section: Introductionmentioning

confidence: 99%

On the Performance of Regenerative Relaying for SWIPT in NOMA Systems

Tran

Phan

Vien

2019

2019 26th International Conference on Telecommunications (ICT)

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show abstract

“…To address this problem, simultaneous wireless information and power transfer (SWIPT) has been recently proposed as a promising solution to prolong the lifetime of energy-constrained wireless networks, where the wireless signal is either switched in the time domain or split in the power domain to provide signal transmission and power transfer using the same wireless carrier, i.e., time switching (TS) strategy and power splitting (PS) strategy. Accordingly, SWIPT is applicable in energy-constrained networks for striking a balance between information and energy [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Power Splitting Strategy for SWIPT Based Two‐Way Multiplicative AF Relay Networks with Nonlinear Energy Harvesting Model

Wang

et al. 2018

Wireless Communications and Mobile Computing

Self Cite

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This paper investigates an energy-constrained two-way multiplicative amplify-and-forward (AF) relay network, where a practical nonlinear energy harvesting (NLEH) model is equipped at the relay to realize simultaneous wireless information and power transfer (SWIPT). We focus on the design of dynamic power splitting (DPS) strategy, in which the PS ratio is able to adjust itself according to the instantaneous channel state information (CSI). Specifically, we first formulate an optimization problem to maximize the outage throughput, subject to the NLEH. Since this formulated problem is nonconvex and difficult to solve, we further transfer it into an equivalent problem and develop a Dinkelbach iterative method to obtain the corresponding solution. Numerical results are given to verify the quick convergence of the proposed iterative method and show the superior outage throughput of the designed DPS strategy by comparing with two peer strategies designed for the linear energy harvesting (LEH) model.

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Joint Time Allocation and Power Splitting Schemes for DF Energy Harvesting Relaying Networks

Cited by 10 publications

References 17 publications

Joint design of beamforming and time switching/power splitting for wireless-powered multi-antenna dual-relay network

Joint design of beamforming and time switching/power splitting for wireless-powered multi-antenna dual-relay network

On the Performance of Regenerative Relaying for SWIPT in NOMA Systems

Dynamic Power Splitting Strategy for SWIPT Based Two‐Way Multiplicative AF Relay Networks with Nonlinear Energy Harvesting Model

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