Performance of Cooperative NOMA with Virtual Full-Duplex based DF Relaying in Nakagami-m Fading

Jose, Justin; Shaik, Parvez; Bhatia, Vimal

doi:10.1109/vtc2021-spring51267.2021.9448775

Cited by 3 publications

(5 citation statements)

References 18 publications

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“…Starting with the sum-rate lower bound (27), its low-SNR characterization is summarized in the following proposition.…”

Section: The Low-snr Regimementioning

confidence: 99%

“…As in Section 4.1, we start with the sum-rate lower bound (27) and derive its high-SNR characterization while focusing on the case where at least one of the two user classes is overloaded. For concreteness, we assume henceforth that β 1 > 1.…”

Section: The High-snr Regimementioning

confidence: 99%

“…More involved network configurations have also been considered recently, e.g., system models encompassing relays (see [ 22 ] and references therein for an exhaustive literature survey). Relaying may either appear in the form of dedicated network elements, e.g., [ 22 , 23 ] or, alternatively, by means of user cooperation, e.g., [ 24 , 25 , 26 , 27 ]. In this framework, focusing on power-domain NOMA with SIC, the notion of virtual full-duplex (VFD) relaying [ 28 ] has gained particular interest as means to circumvent the implementation challenges of true full-duplex operation; see, e.g., [ 22 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…Relaying may either appear in the form of dedicated network elements, e.g., [ 22 , 23 ] or, alternatively, by means of user cooperation, e.g., [ 24 , 25 , 26 , 27 ]. In this framework, focusing on power-domain NOMA with SIC, the notion of virtual full-duplex (VFD) relaying [ 28 ] has gained particular interest as means to circumvent the implementation challenges of true full-duplex operation; see, e.g., [ 22 , 25 , 26 , 27 ]. The impact of imperfect SIC and residual inter-relay interference in this framework was also recently considered in [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

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Beyond Equal-Power Sparse NOMA: Two User Classes and Closed-Form Bounds on the Achievable Region

Zaidel

Shental

Shamai

2022

Entropy

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Non-orthogonal multiple access (NOMA) is a promising technology for future beyond-5G wireless networks, whose fundamental information-theoretic limits are yet to be fully explored. Considering regular sparse code-domain NOMA (with a fixed and finite number of orthogonal resources allocated to any designated user and vice versa), this paper extends previous results by the authors to a setting comprising two classes of users with different power constraints. Explicit rigorous closed-form analytical inner and outer bounds on the achievable rate (total class throughput) region in the large-system limit are derived and comparatively investigated in extreme-SNR regimes. The inner bound is based on the conditional vector entropy power inequality (EPI), while the outer bound relies on a recent strengthened version of the EPI. Valuable insights are provided into the potential performance gains of regular sparse NOMA in practically oriented settings, comprising, e.g., a combination of low-complexity devices and broadband users with higher transmit power capabilities, or combinations of cell-edge and cell-center users. The conditions for superior performance over dense code-domain NOMA (taking the form of randomly spread code-division multiple access), as well as a relatively small gap to the ultimate performance limits, are identified. The proposed bounds are also applicable for the analysis of interference networks, e.g., Wyner-type cellular models.

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“…Starting with the sum-rate lower bound (27), its low-SNR characterization is summarized in the following proposition.…”

Section: The Low-snr Regimementioning

confidence: 99%

Section: The High-snr Regimementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Beyond Equal-Power Sparse NOMA: Two User Classes and Closed-Form Bounds on the Achievable Region

Zaidel

Shental

Shamai

2022

Entropy

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“…OP is a very fundamental performance measure which is suitable for analyzing low mobility D2D communication with slowly varying fading channels where the instantaneous signal to noise ratio (SNR) is assumed to be constant for a large number of symbols. [24][25][26][27][28] Thus, OP based analysis and resource allocation have been extensively studied in various cooperative NOMA works, [29][30][31][32][33] however only few works have been reported in underlay D2D literature. In Reference 22, authors minimized OP while maintaining cellular user outage performance to a certain threshold.…”

Section: Research Gap and Motivationmentioning

confidence: 99%

Outage probability minimization based power control and channel allocation in underlay D2D‐NOMA for IoT networks

Jose

Agarwal

Bhatia

et al. 2022

Trans Emerging Tel Tech

Self Cite

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The emergence of Internet-of-Things (IoT) aims to improve modern life by inter-connecting many smart devices, technologies, and applications. It, however, drastically increases mobile traffic and requires large wireless spectrum. Therefore, for a better spectrum utilization to support this massive connectivity along with low latency and close proximity based communication, non-orthogonal multiple access enabled underlay device-to-device (D2D-NOMA) is envisioned as a key technology for IoT deployment. Hence, in this work, we consider multiple IoT clusters communicating via underlay D2D-NOMA in an uplink cellular network, with the objective of minimizing the outage probability (OP) while allocating resources to the clusters. Specifically, for each cluster, we formulate the optimization problem of OP-based power control with fixed channel allocation (PCCA) and solve it using particle swarm optimization (PSO). Additionally, we prove the convexity of PCCA problem and obtain closed-form expressions at high SNR. Further, we propose a novel OP-aware channel allocation (OPCA) algorithm to enhance the overall D2D network outage performance. The results are numerically validated and an average performance improvement of 31% and 51% is observed over the two conventional schemes namely fixed power allocation and orthogonal multiple access enabled D2D, respectively.

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Frequency Division Duplex Based Cooperative VFD: Outage Analysis and Relay Power Allocation

Jose

Shaik

Bisen

et al. 2023

2023 15th International Conference on COMmunication Systems &Amp; NETworkS (COMSNETS)

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Performance of Cooperative NOMA with Virtual Full-Duplex based DF Relaying in Nakagami-m Fading

Cited by 3 publications

References 18 publications

Beyond Equal-Power Sparse NOMA: Two User Classes and Closed-Form Bounds on the Achievable Region

Beyond Equal-Power Sparse NOMA: Two User Classes and Closed-Form Bounds on the Achievable Region

Outage probability minimization based power control and channel allocation in underlay D2D‐NOMA for IoT networks

Frequency Division Duplex Based Cooperative VFD: Outage Analysis and Relay Power Allocation

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