Transmit power minimisation for full‐duplex two‐way relaying systems with asymmetric packet‐rates and quality‐of‐service requirements

Qian, Chong; Ji, Xiaodong; Cao, Zhen; Li, Wenhua

doi:10.1049/iet-com.2019.0644

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…Our investigations show that EE techniques for BDRSs have not been well studied in the literature, especially in the case that the system has a QoS requirement and different kinds of resource management techniques are considered together under an OFDM modulated setting. Most recently, there are emerging some new concepts and techniques in the wireless communication community, e.g., full-duplex relaying [19], non-orthogonal multiple-access [20], wireless-powered information transmissions [21] and energy harvesting [22], which have been received much attention.…”

Section: Related Workmentioning

confidence: 99%

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Qian

Huang

2021

J Wireless Com Network

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This paper addressed the energy-efficient resource management problem of an amplify-and-forward relay-assisted bidirectional relay system under a quality-of-service (QoS) constraint. The objective is to develop a holistic resource management algorithm for joint implementation of relay selection, power adaptation and bit-rate management for optimal energy efficiency (EE). A three-stage approach is proposed to solve the energy-efficient resource management problem. At stage 1 (stage of power management), a per-subcarrier energy-efficient problem is investigated, leading to a power adaptation algorithm for maximizing the system EE and ensuring the required level of the system QoS. Within the framework of the power adaptation algorithm and by exploiting spatial diversity of multiple-relay channels, distributed relay selection is investigated at stage 2 (stage of relay management). Next, the bit-rate management problem is tackled at stage 3, namely assigning bit rate to different subcarriers to maximize the system EE further. Finally, summarizing the results achieved at the three stages, a novel EE technology combined with relay selection, bit-rate management and power adaptation is developed. Simulation results validated the correctness and the efficiency of the proposed algorithm. It is shown that the proposed algorithm can significantly reduce the total transmit power of the system while ensuring the required system QoS.

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Section: Related Workmentioning

confidence: 99%

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Qian

Huang

2021

J Wireless Com Network

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“…Cooperative relaying has been widely utilized as an efficient way to enlarge network coverage, combat channel fading, increase received signal strength and reduce energy costs [1]. Conventionally, orthogonal time or frequency resources are used at the relay side so as to forward messages for source-terminals.…”

Section: Introductionmentioning

confidence: 99%

On the study of energy efficiency of fixed-wing UAV assisted in-band full-duplex relaying

Shi

Wang

et al. 2023

Second International Conference on Electronic Information Engineering and Computer Communication (EIECC 2022)

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This paper investigates an optimization problem corresponding to energy minimization of an in-band full-duplex relaying subject to a total data-bits constraint and a flight time constraint. In order to utilize light of sight channels, a fixed-wing unmanned aerial vehicle (UAV) is dispatched as an amplify-and-forward relay to forward messages for the source and destination terminals. To solve the optimization problem, a new received signal-to-noise ratio and a new lower-bound of the data size received by the destination-terminal are derived. Finally, the energy minimization problem is solved, giving the optimal flight speed and flight time of the UAV for energy efficiency. Computer simulation experiments are conducted and the results verified the correctness and the efficiency of the propositions of the paper.

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“…The other is the spectrum resources limitation. Full-duplex (FD) relay is treated as a promising technique to double the spectrum efficiency and increase the capacity of the IoT networks, since it enables simultaneously transmission and reception signals over the same frequency band [17][18][19]. To enable FD relaying transmission, the self-interference (SI) must be suppressed effectively via various SI cancellation techniques [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Beamforming design for MIMO full‐duplex SWIPT IoT system under imperfect CSI

Liú

Ling

et al. 2021

IET Communications

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This paper proposes a multiple-input multiple-output full-duplex relay Internet of Things system under imperfect channel state information, where the relay uses time switching relaying protocol to harvest energy. Particularly, due to the uncertainty channel circumstance, the self-interference in full-duplex relay cannot be eliminated completely. For such a system, a joint source-relay beamforming optimization problem which maximizes the system achievable rate subject to the transmit power and harvested energy constraints is studied. In light of the intractability of the problem, a singular value decomposition based geometric programming algorithm is investigated. The considered problem is reformulated to a diagonalized form by using singular value decomposition method. Then, the geometric programming algorithm is adopted to obtain the optimal solution for the reformulated problem. Numerical results validate the effectiveness and superiority of the proposed optimization scheme.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Transmit power minimisation for full‐duplex two‐way relaying systems with asymmetric packet‐rates and quality‐of‐service requirements

Cited by 5 publications

References 30 publications

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

Energy-efficient resource management for OFDM modulated bidirectional relaying with quality-of-service constraint

On the study of energy efficiency of fixed-wing UAV assisted in-band full-duplex relaying

Beamforming design for MIMO full‐duplex SWIPT IoT system under imperfect CSI

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