Capacity and outage analysis of a dual-hop decode-and-forward relay-aided NOMA scheme

Kader, Md. Fazlul; Uddin, Mohammad Belal; Islam, Saiful; Shin, Soo Young

doi:10.1016/j.dsp.2019.02.014

Cited by 32 publications

(36 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To alleviate this performance loss, NOMA-based CRS is proposed in [8] where the source implements NOMA in the first phase to increase spectral efficiency and it is proved that NOMA-CRS is superior to conventional CRS. Therefore, NOMA-CRS has attracted recent attention from both academia and industry [8][9][10][11][12][13][14][15][16]. In those works, NOMA-CRS has been investigated in terms of capacity, outage probability (OP) and error probability.…”

Section: Introductionmentioning

confidence: 99%

“…The error performance of the NOMA-CRS is investigated in [11] and a machine learning aided power optimization is proposed to minimize bit error rate. Then, two more NOMA-CRS schemes are proposed in [12,13], and capacity/outage performances are investigated. Moreover, NOMA-CRS schemes have been considered when multiple relays are available.…”

Section: Introductionmentioning

confidence: 99%

“…NOMA-based diamond relaying, as a subset of the NOMA-CRS with two relays, is analyzed in [14] and [15] in terms of capacity and error performances, respectively. Contrary to [8][9][10][11][12][13][14][15], NOMA-CRS is investigated in [16] when an amplify-forward relay is used rather than a decode-forward relay. However, the aforementioned studies assume that the relay node has its own independent (infinite) energy source to help the device-to-device communication.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the outage performance of SWIPT-NOMA-CRS with imperfect SIC and CSI

Kara

2021

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

In this paper, a non-orthogonal multiple access based cooperative relaying system (NOMA-CRS) is considered to increase spectral efficiency. Besides, the simultaneous wireless information and power transfer (SWIPT) is proposed for the relay in NOMA-CRS. In SWIPT-NOMA-CRS, three different energy harvesting (EH) protocols, power sharing (PS), time sharing (TS) and ideal protocols are implemented. The outage performances of the SWIPT-NOMA-CRS are studied for all three EH protocols. In the analysis, to represent practical/reasonable scenarios, imperfect successive interference canceler (SIC) and imperfect channel state information (CSI) are taken into consideration. The derived outage probability (OP) expressions are validated via computer simulations. Besides, the OP for the benchmark scheme, NOMA-CRS without EH, is also derived under imperfect SIC and CSI. Based on extensive simulations, it is revealed that the SWIPT-NOMA-CRS outperforms NOMA-CRS without EH. Finally, the effects of all parameters on the outage performance of the SWIPT-NOMA-CRS are discussed and for the given scenarios, the optimum PS factor, TS factor and power allocation coefficients are demonstrated.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the outage performance of SWIPT-NOMA-CRS with imperfect SIC and CSI

Kara

2021

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

show abstract

“…In particular, the authors in [12] showed the impacts of relay selection schemes in the analysis of physical-layer security for such a NOMA. In other system models, the concept of both downlink and uplink NOMA (termed as DU-CNOMA) is proposed, which considered system performance [13]. In [13], the authors investigated ergodic sum capacity, outage probability, and outage sum capacity.…”

Section: Introductionmentioning

confidence: 99%

“…In other system models, the concept of both downlink and uplink NOMA (termed as DU-CNOMA) is proposed, which considered system performance [13]. In [13], the authors investigated ergodic sum capacity, outage probability, and outage sum capacity. In [14], an optimum joint user and relay selection procedure was suggested to employ dual-hop transmission in cooperative NOMA networks, in which multiple Amplify-and-Forward (AF) relays forward signals from multiple users to two terminals.…”

Section: Introductionmentioning

confidence: 99%

Wireless-Powered Cooperative MIMO NOMA Networks: Design and Performance Improvement for Cell-Edge Users

Vozňák

2019

Electronics

View full text Add to dashboard Cite

In this paper, we study two transmission scenarios for the base station (BS) in cellular networks to serve the far user, who is located at the cell-edge area in such a network. In particular, we show that wireless-powered non-orthogonal multiple access (NOMA) and the cell-center user in such a model can harvest energy from the BS. To overcome disadvantages of the cell-edge user due to its weak received signal, we fabricate a far NOMA user with multiple antennas to achieve performance improvement. In addition, the first scenario only considers a relay link deployed to forward signals to a far NOMA user, while both direct links and relay links are generally enabled to serve a far user in the second scenario. These situations, together with their outage performance, are analyzed and compared to provide insights in the design of a real-multiple-antenna NOMA network, in which the BS is also required to equip multiple antennas for robust quality of transmission. Higher complexity in computations is already known in consideration of outage metrics with respect to performance analysis, since the system model employs multiple antennas. To this end, we employ a transmit antenna selection (TAS) policy to formulate closed-form expressions of outage probability that satisfies the quality-of-service (QoS) requirements in the NOMA network. Our simulation results reveal that the performance of the considered system will be improved in cases of higher quantity of transmit antennas in dedicated devices. Finally, the proposed design in such a NOMA system cannot only ensure a downlink with higher quality to serve a far NOMA user, but also provide significant system performance improvement compared to a traditional NOMA networks using a single antenna.

show abstract

Nonorthogonal Multiple Access (NOMA): How It Meets 5G and Beyond

et al. 2019

View full text Add to dashboard Cite

Due to massive connectivity and increasing demands of various services and data‐hungry applications, a full‐scale implementation of the fifth‐generation (5G) wireless systems requires more effective radio access techniques. In this regard, nonorthogonal multiple access (NOMA) has recently gained ever‐growing attention from both academia and industry. Compared to orthogonal multiple access (OMA) techniques, NOMA is superior in terms of spectral efficiency and is thus appropriate for 5G and beyond. In this article, we provide an overview of NOMA principles and applications. Specifically, the article discusses the fundamentals of power‐domain NOMA with single and multiple antennas in both uplink and downlink settings. In addition, the basic principles of code‐domain NOMA are elaborated. Further, the article explains various resource allocation techniques such as user pairing and power allocation for NOMA systems; discusses the basic form of cooperative NOMA and its variants; and addresses several opportunities and challenges associated with the compatibility of NOMA with other advanced communication paradigms such as heterogeneous networks and millimeter wave communications.

show abstract

Capacity and outage analysis of a dual-hop decode-and-forward relay-aided NOMA scheme

Cited by 32 publications

References 24 publications

On the outage performance of SWIPT-NOMA-CRS with imperfect SIC and CSI

On the outage performance of SWIPT-NOMA-CRS with imperfect SIC and CSI

Wireless-Powered Cooperative MIMO NOMA Networks: Design and Performance Improvement for Cell-Edge Users

Nonorthogonal Multiple Access (NOMA): How It Meets 5G and Beyond

Contact Info

Product

Resources

About