Power efficiency optimisation of wireless‐powered full‐duplex relay systems

Chen, Ruirui; Zhang, Hailin

doi:10.1049/iet-com.2017.0384

Cited by 14 publications

(4 citation statements)

References 24 publications

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“…This section will prove the expressions of the SNRs in (21) and (22). From (19), we have (56). We further simplify (56) as…”

Section: Appendix Bmentioning

confidence: 93%

“…Optimizing the OP and quality of services (QoS) for non-linear EH models was implemented in [18] where the proposed FD DF relaying model was deduced by the optimal solution based on the golden section method. The authors in [19] solves the power efficiency optimization problem for EH FD relaying with the joint power and time allocation scheme to obtain different source transmit powers. While [20] proposed 1859-378X-2019-3405 c 2019 REV the optimum transmission algorithm with significantly reduced complexity, [21] optimized channel capacity.…”

Section: Related Workmentioning

confidence: 99%

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Evaluating the effect of self-interference on the performance of full-duplex two-way relaying communication with energy harvesting

Huu

Van

Bao

2020

REV J. Electron. Commun.

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In this paper, we study the throughput and outage probability (OP) of two-way relaying (TWR) communication system with energy harvesting (EH). The system model consists two source nodes and a relay node which operates in full-duplex (FD) mode. The effect of self-interference (SI) due to the FD operation on the system performance is evaluated for both one-way full duplex (OWFD) and two-way full duplex (TWFD) diagrams where the amplify-and-forward (AF) relay node collects energy harvesting with the time switching (TS) scheme. We first propose an individual OP expression for each specific source. Then, we derive the exact closed-form overall OP expression for the OWFD diagram. For the TWFD diagram, we propose an approximate closed-form expression for the overall OP. The overall OP comparison among hybrid systems (Two-Way Half-Duplex (TWHD), OWFD, TWFD) are also discussed. Finally, the numerical/simulated results are presented for Rayleigh fading channels to demonstrate the correction of the proposed analysis.

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“…This section will prove the expressions of the SNRs in (21) and (22). From (19), we have (56). We further simplify (56) as…”

Section: Appendix Bmentioning

confidence: 93%

Section: Related Workmentioning

confidence: 99%

Evaluating the effect of self-interference on the performance of full-duplex two-way relaying communication with energy harvesting

Huu

Van

Bao

2020

REV J. Electron. Commun.

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“…In [15], investigated secure transmission in simultaneous wireless information and power transfer systems, in which a source node communicates with a wireless‐powered FD destination node in the presence of a passive eavesdropping node. In [16], Chen and Zhang also studied power efficiency optimisation in wireless‐powered FD relay systems, where the entire transmission process can be partitioned into the wireless power transfer phase and FD information transmission phase. A joint power and time allocation scheme was proposed to maximise power efficiency.…”

Section: Literature Review and Background Workmentioning

confidence: 99%

Energy efficiency of full‐duplex communication system assisted by reconfigurable intelligent surface

Wang

Guan

et al. 2022

IET Communications

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The sixth generation advocates green communications, thus energy efficiency (EE) has become an important metric. In this study, a method to increase the EE of a reconfigurable intelligent surface (RIS) aided point‐to‐point communication system is proposed, where both sources are equipped with multi‐antenna and operate in the full‐duplex (FD) mode. The extra power consumption for self‐interference cancellation in the FD mode is considered and modelled as a linear function of the transmission power. The EE maximisation problem is divided into an active beamforming subproblem for the two multi‐antenna sources and a passive beamforming subproblem for RIS, and an alternative optimisation framework is adopted to solve them iteratively. Dinkelbach's method is used to address the fractional objective function in the active beamforming optimisation problem. The penalty method and successive convex approximation are exploited for passive beamforming design. Simulation results show that the scheme can greatly boost the EE performance compared with the half‐duplex mode and is superior to the sum‐rate‐maximisation scheme in larger transmission power settings. The proposed method can be used to extend the lifetime of communication devices without deteriorating communication performance.

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“…The carrier frequency is assumed to be 1 GHz. Unless specified otherwise, the self-loop path gain or SI is set to γ LI = −10 dB [20], [28], which is justified since there is no need of self-interference attenuation at R for energy recycle at R. The energy harvesting efficiency η is set to 0.5 [17, Table III]. Note that using the aforementioned path loss model and practical simulation setup, the power of the received signal at the relay during second communication phase passes the threshold minimum power requirement (−21 dBm with 13 nm CMOS technology [17]) to carry out EH at the relay.…”

Section: A the Simulation Setupmentioning

confidence: 99%

MIMO-OFDM-Based Wireless-Powered Relaying Communication With an Energy Recycling Interface

Nasir

Tuan

Poor

2020

IEEE Trans. Commun.

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This paper considers wireless-powered relaying multiple-input-multiple-output (MIMO) communication, where all four nodes (information source, energy source, relay, and destination) are equipped with multiple antennas. Orthogonal frequency division multiplexing (OFDM) is applied for information processing to compensate the frequency selectivity of communication channels between the information source and the relay and between the relay and the destination as these nodes are assumed to be located far apart each other. The relay is equipped with a full-duplexing interface for harvesting energy not only from the wireless transmission of the dedicated energy source but also from its own transmission while relaying the source information to the destination. The problem of designing the optimal power allocation over OFDM subcarriers and transmit antennas to maximize the overall spectral efficiency is addressed. Due to a very large number of subcarriers, this design problem poses a large-scale nonconvex optimization problem involving a few thousand variables of power allocation, which is very computationally challenging. A novel path-following algorithm is proposed for computation. Based on the developed closed-form calculation of linear computational complexity at each iteration, the proposed algorithm rapidly converges to an optimal solution. Compared to the best existing solvers, the computational complexity of the proposed algorithm is reduced at least 10 5 times, making it really efficient and practical for online computation while that existing solvers are impotent. Numerical results for a practical simulation setting show promising results by achieving high spectral efficiency.

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Power efficiency optimisation of wireless‐powered full‐duplex relay systems

Cited by 14 publications

References 24 publications

Evaluating the effect of self-interference on the performance of full-duplex two-way relaying communication with energy harvesting

Evaluating the effect of self-interference on the performance of full-duplex two-way relaying communication with energy harvesting

Energy efficiency of full‐duplex communication system assisted by reconfigurable intelligent surface

MIMO-OFDM-Based Wireless-Powered Relaying Communication With an Energy Recycling Interface

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