Outage Performance of Energy Harvesting DF Relaying NOMA Networks

Ha, Dac‐Binh; Nguyen, Sang Quang

doi:10.1007/s11036-017-0922-x

Cited by 48 publications

(33 citation statements)

References 32 publications

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“…28 Therefore, using (22), the PDF of BR is obtained as In addition, when m (n) BR s are positive integers, ie, m (n) BR ∈ Z + (∀n), (42) becomes 28 Therefore, using (22), the PDF of BR is obtained as In addition, when m (n) BR s are positive integers, ie, m (n) BR ∈ Z + (∀n), (42) becomes…”

Section: Preliminary Mathematicsmentioning

confidence: 99%

“…where the second equality is obtained using partial fraction decomposition technique. 28 Therefore, using (22), the PDF of BR is obtained as In addition, when m (n) BR s are positive integers, ie, m (n) BR ∈ Z + (∀n), (42) becomes…”

Section: Preliminary Mathematicsmentioning

confidence: 99%

“…Subsequently, to enhance the outage performance, Do et al 17 presented a best-near best-far NOMA user selection scheme. 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. Zhang et al 19 considered the outage performance for EH enabled NOMA relaying networks, in which the base station (BS) determines the transmitting antenna and the multiple users conduct maximal ratio combining to finalize received signal.…”

Section: Introductionmentioning

confidence: 99%

“…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. 23 Most of the prior literature focusing on NOMA are investigated over perfect CSI consideration on wireless Rayleigh fading assumptions.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Preliminary Mathematicsmentioning

confidence: 99%

Section: Preliminary Mathematicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…There have also been other EH-based studies using NOMA protocol. Ha et al [21] studied the outage realization of EH based DF relaying NOMA networks. They derived the closed form equation of the outage probability.…”

Section: Introductionmentioning

confidence: 99%

RF Energy Harvesting and Information Transmission Based on Power Splitting and NOMA for IoT Relay Systems

Rauniyar¹,

Engelstad²,

Osterb

2018

2018 IEEE 17th International Symposium on Network Computing and Applications (NCA)

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Due to the proliferation of the Internet of Things (IoT), an unprecedented expansion of wireless devices and communication among these devices for data transmission is expected over the next few years. IoT devices are rather power constrained and are mostly battery operated devices. Therefore, energy efficiency of such IoT devices or systems is a major concern. In this paper, radio frequency (RF) energy harvesting and information transmission based on Non-orthogonal multiple access (NOMA) protocol is considered for wireless powered IoT relay systems. A source node needs the help of power constrained IoT relay node IoT R to transmit its data. IoT R node first harvests the energy from the RF signal of the source node and process the information in the first stage and then transmits the source node information data along with its data using NOMA protocol in the next stage. Unlike most of the previous works in this domain, this paper also considers the data transmission of the IoT R node along with the source node to its intended destination nodes. Specifically, considering the energy constrained nature of IoT nodes and devices, we have used the combination of power splitting (PS) and NOMA protocol and have mathematically derived the outage probability and sum-throughput for the proposed system. We have also formulated an algorithm to find out the optimal power splitting factor that maximizes the sum-throughput of the proposed system. Our proposed system analytical results are validated by the simulation results. Index Terms-Radio frequency, energy harvesting, power splitting, internet of things, relaying, NOMA

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Capacity enhancement of NOMA‐SWIPT IoT relay system with direct links over rayleigh fading channels

Rauniyar

Engelstad

Østerbø

2020

Trans Emerging Tel Tech

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It is known that when the direct links between the base station (BS) and the users exist and are nonnegligible, consolidating direct links could significantly enhance the performance of the cooperative relaying systems. Therefore, taking the impact of direct link into account, in this article, we investigate the capacity enhancement of the nonorthogonal multiple access (NOMA) with simultaneous wireless information and power transfer (SWIPT) for the Internet of Things (IoT) relay systems over the Rayleigh fading channels. Specifically, for the considered NOMA-SWIPT system with direct links, we study a time-switching energy harvesting (EH) architecture in which a BS transmits two symbols to the two users through the direct links and via an EH-based relay node. On the receiving user node, we employ maximum ratio combining (MRC) to show the capacity enhancement of the considered system. Moreover, analytical expressions for the Ergodic capacity and Ergodic Sum Capacity are mathematically derived for the MRC and single signal decoding scheme, and the analytical expressions are corroborated with the Monte-Carlo simulation results. This not only reveals the effect of different EH parameters on the system performance, but it also demonstrates the capacity enhancement of the considered NOMA-SWIPT system compared to a similar system without direct links and to conventional OMA schemes.

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Outage Performance of Energy Harvesting DF Relaying NOMA Networks

Cited by 48 publications

References 32 publications

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

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

RF Energy Harvesting and Information Transmission Based on Power Splitting and NOMA for IoT Relay Systems

Capacity enhancement of NOMA‐SWIPT IoT relay system with direct links over rayleigh fading channels

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