Journal ArticleDOI
Full-Duplex Device-to-Device-Aided Cooperative Nonorthogonal Multiple Access
TLDR
This paper presents a full-duplex device-to-device (D2D)-aided cooperative nonorthogonal multiple access (NOMA) scheme to improve the outage performance of the NOMA-weak user in a N OMA user pair, where the Noma- weak user is helped by the NomA-strong user with the capability of full- duplex D2D communications.Abstract:
This paper presents a full-duplex device-to-device (D2D)-aided cooperative nonorthogonal multiple access (NOMA) scheme to improve the outage performance of the NOMA-weak user in a NOMA user pair, where the NOMA-weak user is helped by the NOMA-strong user with the capability of full-duplex D2D communications. The expressions for the outage probability are derived to characterize the performance of the proposed scheme. The results show that the proposed cooperative NOMA scheme can achieve superior outage performance compared to the conventional NOMA and orthogonal multiple access (OMA). In order to further improve the outage performance, an adaptive multiple access (AMA) scheme is also studied, which dynamically switches between the proposed cooperative NOMA, conventional NOMA, and OMA schemes, according to the level of residual self-interference and the quality of links. The results show that the AMA scheme outperforms the above multiple access schemes in terms of outage performance.read more
Citations
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Journal ArticleDOI
An Optimal User Selection Scheme for Cooperative NOMA Networks with SWIPT
TL;DR: In this paper, an optimal user selection scheme for cooperative NOMA networks with simultaneous wireless information and power transfer (SWIPT) is proposed, where SWIPT is employed at near users to relay information to far users via applying a user selection algorithm that selects an optimal pair of near and far users.
Journal ArticleDOI
DF Relay Assisted Covert Communications: Analysis and Optimization
TL;DR: In this article , a coordinated direct and relay transmission (CDRT) scheme was proposed to achieve the maximum covert rate with the help of a multi-antenna relay, where the beamforming vectors at the source and the relay are coupled.
Posted Content
Cooperation in 5G HetNets: Advanced Spectrum Access and D2D Assisted Communications
TL;DR: In this article, a heterogeneous networking architecture is envisioned, where cells of different sizes and radio access technologies coexist, and cooperation among devices is discussed in the context of the state-of-the-art D2D assisted communication paradigm.
Proceedings ArticleDOI
Backscatter-Based Cooperative NOMA
Weiyu Chen,Haiyang Ding,Shilian Wang,Daniel Benevides da Costa,Fengkui Gong,Pedro H. J. Nardelli +5 more
TL;DR: Analytical results show that the proposed BC-NOMA strictly outperforms NC-N OMA in terms of all the three metrics, and it is shown that compared with CR/IR-NomA, only the proposedBC- NOMA scheme can enhance the transmission reliability without impairing the transmission rate.
Optimization and Fundamental Insights in Full-Duplex Cellular Networks
B. da Silva,Jose Mairton +1 more
TL;DR: The next generations of cellular networks are expected to provide explosive data rate transmissions and very low latencies and to meet such demands, one of the promising wireless transmissions candida is proposed.
References
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Journal ArticleDOI
Cooperative Non-Orthogonal Multiple Access with Simultaneous Wireless Information and Power Transfer
TL;DR: Analytical results demonstrate that the use of SWIPT will not jeopardize the diversity gain compared to the conventional NOMA and confirm that the opportunistic use of node locations for user selection can achieve low outage probability and deliver superior throughput in comparison to the random selection scheme.