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
Cooperative relay to relay communication using NOMA for energy efficient wireless communication
TL;DR: The proposed relay to relay scheme is used in a single cell environment which employs cooperative relays for transferring signals to poor quality users and a scheme for the selection of a relay for any user experiencing poor quality service depending upon angle and coverage is proposed.
Journal ArticleDOI
Evaluation of Full-Duplex SWIPT Cooperative NOMA-Based IoT Relay Networks over Nakagami-m Fading Channels
TL;DR: The results show that the proposed NOMA system can achieve superior performance compared to its orthogonal multiple access (OMA) counterpart under perfect SIC and with a low- to-medium signal-to-noise ratio under imperfect SIC, according to the level of residual self-interference and the quality of links.
Proceedings ArticleDOI
Full-Duplex Decode-and-Forward Cooperative Non-Orthogonal Multiple Access
TL;DR: By combining the principle of NOMA and full-duplex (FD) transmission, a downlink FD cooperative C-NOMA (C- N OMA) scheme is proposed to enhance the system performance and attains a close sum rate performance compared to NomA and a superior fairness for the weak user.
Journal ArticleDOI
Successive Interference Cancellation and Fractional Frequency Reuse for LTE Uplink Communications
TL;DR: Numerical results show that both SIC and FFR can largely improve network performance, but SIC has a stronger impact than FFR.
Proceedings ArticleDOI
Joint Precoding and User Scheduling for Full-Duplex Cooperative MIMO-NOMA V2X Networks
TL;DR: A fair precoding scheme is proposed, which utilizes the centroid of users' channel vectors to calculate the precoding vectors, and a novel joint precoding and user scheduling strategy called JPUS is proposed.
References
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TL;DR: In this paper, a single channel full-duplex wireless transceiver is proposed, which uses a combination of RF and baseband techniques to achieve FD with minimal effect on link reliability.
Journal ArticleDOI
Cooperative Non-Orthogonal Multiple Access in 5G Systems
TL;DR: In this article, a cooperative NOMA scheme is proposed, where users with better channel conditions have prior information about the messages of other users, and an approach based on user pairing is also proposed to reduce system complexity.
Journal ArticleDOI
Device-to-device communication in 5G cellular networks: challenges, solutions, and future directions
TL;DR: An overview of major challenges in two-tier networks is provided and some pricing schemes for different types of device relaying are proposed.
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.