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
Resource Allocation for Energy Harvesting-Powered D2D Communications Underlaying NOMA-Based Networks
TL;DR: Simulation results are demonstrated to validate the superiority of the proposed scheme over the conventional orthogonal multiple access (OMA) scheme to maximize the throughput of the D2D links while guaranteeing the quality of service (QoS) for each CU.
Journal ArticleDOI
PRSS: A Prejudiced Random Sensing Strategy for Energy-Efficient Information Collection in the Internet of Things
TL;DR: A CS-based prejudiced random sensing strategy (PRSS) that explicitly considers the heterogeneous energy consumption of IoT sensor nodes at different locations, in order to accurately attain a desired tradeoff between the overall energy consumption and the sensing accuracy is proposed.
Journal ArticleDOI
Energy efficiency maximisation in wireless powered networks with cooperative non-orthogonal multiple access
TL;DR: This study considers applying simultaneous wireless information and power transfer (SWIPT) technique to cooperative NOMA wireless networks, where energy-constrained relay nodes harvest the ambient radio-frequency signal and use the harvested energy to forward the packets from sources to destinations.
Journal ArticleDOI
Secure reconfigurable intelligent surface aided heterogeneous VLC-RF cooperative NOMA networks
Xiang Zhao,Jin Yong Sun +1 more
TL;DR: In this article , the authors investigated the physical layer security for a reconfigurable intelligent surface (RIS)-aided heterogeneous visible light communication (VLC) and radiofrequency (RF) network with two legitimate user equipments (UEs) in cooperative nonorthogonal multiple access (NOMA).
Journal ArticleDOI
User Association and Resource Allocation in Full-Duplex Relay Aided NOMA Systems
TL;DR: A new hybrid NOMA (FDH-NOMA) framework is proposed to support ubiquitous connectivity and the rising demand of tele-traffic in the Internet of Things (IoT), and an iterative algorithm for successively optimizing ergodic sum rate is designed.
References
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Cooperative Non-Orthogonal Multiple Access in 5G Systems
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Proceedings ArticleDOI
System-level performance evaluation of downlink non-orthogonal multiple access (NOMA)
TL;DR: It is shown under multiple configurations that the system-level performance achieved by NOMA is superior to that for OMA, and key link adaptation functionalities of the LTE radio interface such as adaptive modulation and coding, time/frequency-domain scheduling, and outer loop link adaptation are shown.
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.