Energy Efficiency and Spectrum Efficiency of Multihop Device-to-Device Communications Underlaying Cellular Networks

Wei, Lili; Hu, Rose Qingyang; Qian, Yi; Wu, Geng

doi:10.1109/tvt.2015.2389823

Cited by 162 publications

(70 citation statements)

References 24 publications

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“…Particularly, the work in [22] focused on the optimization of the sum-rate of the D2D links without degrading the quality-of-service (QoS) requirement ofCUs. In [23], the closed-form expressions for average energy efficiency (EE) and SE of multi-hop D2D communications were provided.…”

Section: Introductionmentioning

confidence: 99%

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Nguyen

Vozňák

2017

Automatika

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Because of the short battery life of user equipments (UEs), and the requirements for better quality of service have been more demanding, energy efficiency (EE) has emerged to be important in device-to-device (D2D) communications. In this paper, we consider a scenario, in which D2D UEs in a half-duplex decode-and-forward cognitive D2D communication underlying a traditional cellular network harvest energy and communicate with each other by using the spectrum allocated by the base station (BS). In order to develop a practical design, we achieve the optimal time switching (TS) ratio for energy harvesting. Besides that, we derive closedform expressions for outage probability, sum-bit error rate, average EE and instantaneous rate by considering the scenario when installing the BS near UEs or far from the UEs. Two communication types are enabled by TS-based protocol. Our numerical and simulation results prove that the data rate of the D2D communication can be significantly enhanced.

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Section: Introductionmentioning

confidence: 99%

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Nguyen

Vozňák

2017

Automatika

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“…For d SR ≥ 80m, SAFS achieves almost the same average EE as OAFS. Cellular communications is more energy-efficient than direct D2D communications due to lower path-loss [38] (as given in Table II) resulting in lower transmission power required to satisfy target rate R and lower outage probability. To the best of our knowledge, no overhead-aware adaptive forwarding methods exist in the literature that could be included in performance comparison with the proposed OAFS and SAFS.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Under these circumstances, relays could assist the communication between D2D UEs [32]- [38]. In [32], a distributed best relay selection method for D2D communications underlaying cellular networks was proposed, where the best relay among the ones that will not cause harmful interference to the cellular network was selected.…”

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confidence: 99%

“…An iterative Hungarian method was proposed as a suboptimal solution with a low complexity and near-optimal throughput performance. The EE and SE of multi-hop overlay D2D communications based on a two-time-slot physical-layer network coding scheme was analysed in [38].…”

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confidence: 99%

“…SYSTEM MODEL We consider D2D communications overlaying a cellular network as depicted in Fig. 1, where cellular and D2D communications are allocated with orthogonal channels [38]. The source UE (SUE) intends to transmit data packets to the destination UE (DUE).…”

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confidence: 99%

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Energy- and Spectral-Efficient Adaptive Forwarding Strategy for Multi-Hop Device-to-Device Communications Overlaying Cellular Networks

Klaiqi

Chu

Zhang

2018

IEEE Trans. Wireless Commun.

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Abstract-Device-to-device (D2D) communications in cellular networks enable direct transmissions between user equipments (UEs). If the source UE (SUE) and the destination UE (DUE) are far away from each other or the channel between them is too weak for direct transmission, then multi-hop D2D communications, where relay UEs (RUEs) forward the SUE's data packets to the DUE, can be used. In this paper, we propose an energyefficient optimal adaptive forwarding strategy (OAFS) for multihop D2D communications. OAFS adaptively chooses between the best relay forwarding (BRF) mode and the cooperative relay beamforming (CRB) mode with the optimal number of RUEs, depending on which of them provides the higher energy efficiency (EE). To reduce the computational complexity for selecting the optimal RUEs for CRB mode, we propose a low-complexity suboptimal adaptive forwarding strategy (SAFS) that selects between the BRF and the CRB with two RUEs by comparing their EE. Furthermore, a distributed forwarding mode selection approach is proposed to reduce the overhead for forwarding mode selection. The analytical and simulation results show that OAFS and SAFS exhibit significantly higher EE and spectral efficiency (SE) than BRF, CRB, direct D2D communications and conventional cellular communications. SAFS is almost as energy-and spectral-efficient as OAFS.

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Security in 5G Wireless Networks

2021

Security in Wireless Communication Networks

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Energy Efficiency and Spectrum Efficiency of Multihop Device-to-Device Communications Underlaying Cellular Networks

Cited by 162 publications

References 24 publications

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Energy- and Spectral-Efficient Adaptive Forwarding Strategy for Multi-Hop Device-to-Device Communications Overlaying Cellular Networks

Security in 5G Wireless Networks

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