Two-way relaying networks in green communications for 5G: Optimal throughput and tradeoff between relay distance on power splitting-based and time switching-based relaying SWIPT

Nguyen, Hoang-Sy; Do, Dinh‐Thuan; Vozňák, Miroslav

doi:10.1016/j.aeue.2016.10.002

Cited by 33 publications

(25 citation statements)

References 8 publications

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“…Following the work in [8], these authors continued evaluating the throughput performance and ergodic capacity of a decode-and-forward (DF) relaying network for both TSR and PSR protocols in [9]. In [10], the performance of two and three time slot transmission schemes in amplify-and-forward (AF) two-way relaying networks was investigated, where the authors proposed two new protocols: so-called power time splitting-based twoslot and power time splitting-based three-slot . Meanwhile, the authors in [10] continued their study on the throughput performance for two, three and four time slot transmission schemes for AF two-way relaying networks [11].…”

Section: Introductionmentioning

confidence: 99%

“…In [10], the performance of two and three time slot transmission schemes in amplify-and-forward (AF) two-way relaying networks was investigated, where the authors proposed two new protocols: so-called power time splitting-based twoslot and power time splitting-based three-slot . Meanwhile, the authors in [10] continued their study on the throughput performance for two, three and four time slot transmission schemes for AF two-way relaying networks [11]. Regarding bit error rate (BER) performance, the sum BER performance of (AF) EH twoway relaying networks was evaluated deploying TSR protocol [12] while the work in [13] derived an exact closed-form expression for average BER of a selection combining scheme for a cooperative system using an AF relay with simultaneous wireless information and power transfer.…”

Section: Introductionmentioning

confidence: 99%

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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%

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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“…Therefore, the efficient usage of RF-EH relay in various forms of cooperative wireless networks is studied in previous works. [8][9][10][11][12][13][14][15][16] Performances of these networks are evaluated for outage probability and throughput in both one-way [8][9][10][11][12] and two-way [13][14][15] communications. In the works of Nasir et al, 8,9 amplify-and-forward (AF) relay-assisted and decode-and-forward (DF) relay-assisted PS relaying (PSR) and TS relaying (TSR) schemes were studied for delay-limited and delay-tolerant traffic, respectively.…”

Section: Introductionmentioning

confidence: 99%

Outage analysis in two‐way communication with RF energy harvesting relay and co‐channel interference

Ghosh

Acharya

Maity

2017

Trans Emerging Tel Tech

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The study of relays with the scope of energy-harvesting (EH) looks interesting as a means of enabling sustainable, wireless communication without the need to recharge or replace the battery driving the relays. However, reliability of such communication systems becomes an important design challenge when such relays scavenge energy from the information bearing RF signals received from the source, using the technique of simultaneous wireless information and power transfer (SWIPT). To this aim, this work studies bidirectional communication in a decode-and-forward (DF) relay assisted cooperative wireless network in presence of co-channel interference (CCI). In order to quantify the reliability of the bidirectional communication systems, a closed form expression for the outage probability of the system is derived for both power splitting (PS) and time switching (TS) mode of operation of the relay. Simulation results are used to validate the accuracy of our analytical results and illustrate the dependence of the outage probability on various system parameters, like PS factor, TS factor, and distance of the relay from both the users. Results of performance comparison between PS relaying (PSR) and TS relaying (TSR) schemes are also presented. Besides, simulation results are also used to illustrate the spectral-efficiency and the energy-efficiency of the proposed system. The results show that, both in terms of spectralefficiency and the energy-efficiency, the two-way communication system in presence of moderate CCI power, performs better than the similar system without CCI. Additionally, it is also found that PSR is superior to TSR protocol in terms of peak energy-efficiency.

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“…In recent years, simultaneous information and power transfer (SWIPT) has become a promising technology, which allows a wireless equipment to perform energy harvesting (EH) and information processing at the same time by using the ambient radio frequency signals [1][2][3][4][5][6]. In particular, the work in [7] focused on the analysis of EE in multiple relay orthogonal frequency-division multiplexing (OFDM) systems, equipped with power supplies, so it needs energy harvested from signals transferred by transmitter.…”

Section: Introductionmentioning

confidence: 99%

Successful transmission probability of cognitive device-to-device communications underlaying cellular networks in the presence of hardware impairments

Nguyen¹,

Nguyen²,

Vozňák³

2017

J Wireless Com Network

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This paper studies the cognitive wireless powered device-to-device (D2D) communication underlaying a cellular network, where there are two types of communications, including peer-to-peer (P2P) communication and a multi-hop D2D communication, which are assumed to be affected by hardware impairments (HWIs). We investigate the one-hop P2P communication and the multi-hop D2D communication, where the relay node helps other two user equipments (UEs) exchange information with a two-time-slot physical-layer network coding scheme. To examine the system performance, we derive closed-form expressions for the average energy efficiency (EE) and spectral efficiency (SE). Besides that, we also obtain the successful transmission probability (STP) for the two considered communications, and the optimal values of time switching (TS) and power splitting (PS) ratios are achieved with the help of a genetic algorithm (GA)-based optimization algorithm in our proposed energy harvesting (EH) protocol so-called Hybrid TS-PS (HTPS) relaying protocol. Comparisons between amplify-and-forward (AF) and decode-and-forward (DF) transmission schemes are provided. The simulation results give evidence that the STP is significantly improved regardless of the presence of HWIs thanks to the derived parameters, i.e., average EE, SE, and the optimal TS and PS ratios.

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Two-way relaying networks in green communications for 5G: Optimal throughput and tradeoff between relay distance on power splitting-based and time switching-based relaying SWIPT

Cited by 33 publications

References 8 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

Outage analysis in two‐way communication with RF energy harvesting relay and co‐channel interference

Successful transmission probability of cognitive device-to-device communications underlaying cellular networks in the presence of hardware impairments

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