Energy Harvesting Non-Orthogonal Multiple Access System With Multi-Antenna Relay and Base Station

Ashraf, Mateen; Shahid, Adnan; Jang, Ji-Woong; Lee, Kyung-Geun

doi:10.1109/access.2017.2747085

Cited by 47 publications

(32 citation statements)

References 20 publications

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“…In EH-based NOMA systems, there have been a number of investigations conducted on different sorts of systems, i.e., cooperative relaying networks (CRNs), wireless sensor networks (WSNs), and cognitive relaying (CNs) [22][23][24][25][26][27]. In [22], EH CRN NOMA system was studied, in which three different relaying protocols AF, DF, and quantize-map-forward (QF) were taken into comparisons. Besides that, the outage probability (OP) of the EH NOMA relaying network was examined in [23], where the transmitting antenna selection is applied at BS and maximal ratio combining is applied at the multiple users.…”

Section: Introductionmentioning

confidence: 99%

Outage Probability Analysis in Relaying Cooperative Systems with NOMA Considering Power Splitting

Nguyen

et al. 2019

Symmetry

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In recent years, non-orthogonal multiple access (NOMA) has become a promising technology for the advancement of future wireless communications. In principle, the relay node with better channel conditions can support others to enhance the system performance by using successive interference cancellation (SIC) technique. In this paper, we take advantage of NOMA in the study of a relaying cooperative system operating in half-duplex (HD) fixed decode-and-forward (DF) relaying scheme. In the two time slots, two data symbols are received at the destination node resulting in a higher transmission rate. Besides that, we study energy harvesting (EH) with power splitting (PS) protocol. For performance analysis, approximate and exact closed-form expressions for outage probability (OP) are obtained. Following that, we examine the average bit error probability (ABEP) while expressions for the throughput in delay-limited mode are given. It can be seen that our simulation results match well with the Monte Carlo simulations.

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Section: Introductionmentioning

confidence: 99%

Outage Probability Analysis in Relaying Cooperative Systems with NOMA Considering Power Splitting

Nguyen

et al. 2019

Symmetry

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“…The status of recent research in power-domain NOMA-based cooperative networks are surveyed in [5]. In order to prolong the lifetime of energy constrained relay systems, NOMA can be integrated with simultaneous wireless information and power transfer (SWIPT) [6,7].…”

Section: Introductionmentioning

confidence: 99%

PEP Analysis of AF Relay NOMA Systems Employing Order Statistics of Cascaded Channels

Wang

Liang

2019

Electronics

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The precise error performance analysis is challenging for non-orthogonal multiple access (NOMA) systems due to nonlinear successive interference cancellation (SIC) processing among NOMA users. In this paper, the pairwise error probability (PEP) performance of different users is investigated for relay NOMA simultaneous wireless information and power transfer (SWIPT) systems. By employing the order statistics theory, we obtain the ordered probability density function of the cascaded channel through Source-to-Relay-to-User links. Then we derive the analytical closed-form PEP expressions for NOMA users. To obtain the approximate closed-form PEP, we explore the finite series representation of the power of the modified Bessel function to replace the integrand terms. Monte Carlo simulation results show that the approximate analytical PEP of each user is basically in agreement with the simulated PEP. Furthermore, on the basis of the closed-form PEP, the influence of relevant system parameters on the error performance is examined via numerical simulations, which manifests that the choice of power allocation coefficients should be balanced between the users’ channel conditions and the demanded quality of service.

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“…Several NOMA user selection models are investigated, including random near NOMA user and random far NOMA user selection, nearest near NOMA user and nearest far NOMA user selection, and nearest near NOMA user and farthest far NOMA user selection, to determine system performance. 21 The recent work shown several results related to a new relay selection scheme suggested in condition of known channel state information (CSI) and battery status of relays. Furthermore, the application of SWIPT to NOMA was explored in a single-input single-output scenario, 18 in which three user-paring schemes are examined via the outage performance considering on the cell-center users.…”

Section: Introductionmentioning

confidence: 99%

“…20 Regarding NOMA in relay, three schemes including amplify-forward, decode-forward, and quantize-map-forward at the multiantenna relay user are investigated in the closed-form formula for evaluation of the outage probability performance. 21 The recent work shown several results related to a new relay selection scheme suggested in condition of known channel state information (CSI) and battery status of relays. 22 Two cases of single relay and multiple relays with partial relay selection strategy are investigated how important parameters including PS ratio, EH efficiency, and the location of relay nodes affect on outage performances.…”

Section: Introductionmentioning

confidence: 99%

Power allocation schemes for wireless powered NOMA systems with imperfect CSI: An application in multiple antenna–based relay

Nguyen

2018

Int J Communication

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The simultaneous wireless information and power transfer or energy harvesting (EH) can be combined in nonorthogonal multiple access (NOMA) as green applications towards 5G. This paper investigates a new cooperative EH-NOMA protocol, where the intermediate relay has not equipped the fixed power source and acts as a wireless powered relay to help signal transmission to representative weak user and strong user in NOMA. However, impacts of imperfect channel estimation contribute to outage system performance evaluations. We formulate the power resource assignment paradigms as two schemes, namely, fixed power allocation and dynamic power allocation, by considering imperfect channel state information (CSI). To solve this problem, we derive the closed-form expressions of outage probability under imperfect CSI and the power allocation constraints. The expected numerical results related to the derived expressions for the outage probability are examined that numerical and the Monte Carlo simulations are strictly matching lines. KEYWORDS energy harvesting, imperfect channel state information, NOMA, outage probability Int J Commun Syst. 2018;31:e3789.wileyonlinelibrary.com/journal/dac

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Energy Harvesting Non-Orthogonal Multiple Access System With Multi-Antenna Relay and Base Station

Cited by 47 publications

References 20 publications

Outage Probability Analysis in Relaying Cooperative Systems with NOMA Considering Power Splitting

Outage Probability Analysis in Relaying Cooperative Systems with NOMA Considering Power Splitting

PEP Analysis of AF Relay NOMA Systems Employing Order Statistics of Cascaded Channels

Power allocation schemes for wireless powered NOMA systems with imperfect CSI: An application in multiple antenna–based relay

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