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
More filters
Posted Content
Non-orthogonal Multiple Access as an Enabler for Massive Connectivity for 5G and Beyond Networks
TL;DR: In scenarios with massive number of users, non-orthogonal multiple access scheme increases the number of active connections by superimposing the signal of multi-users on a same resource block, thereby also utilizing the available resources efficiently.
Journal ArticleDOI
On the Symbol Error Probability of STBC-NOMA with Timing Offsets and Imperfect Successive Interference Cancellation
TL;DR: The simulation results show that the performance of STBC-NOMA was degraded significantly with an increase in the imperfection of SIC and timing errors and that traditional orthogonal access schemes, such as Orthogonal frequency division multiple access (OFDMA) and time divisionmultiple access (TDMA), should be used after a threshold SIC level.
Journal ArticleDOI
Enabling Non-Linear Energy Harvesting in Power Domain Based Multiple Access in Relaying Networks: Outage and Ergodic Capacity Performance Analysis
TL;DR: A closed-form formula of outage probability and ergodic capacity is studied under a practical non-linear energy harvesting model and shows that the performance of energy harvesting-aware PDMA systems under the proposed model can satisfy the requirements in real PDMA applications.
Journal ArticleDOI
Outage Performance of CDF-Based Scheduling in Downlink and Uplink NOMA Systems
TL;DR: High signal to noise ratio (SNR) approximations or bounds of the outage probabilities are derived, and then be utilized to analyze the achieved diversity orders of the near and far users in downlink and uplink transmissions.
Journal ArticleDOI
Cooperative Asynchronous Non-Orthogonal Multiple Access With Power Minimization Under QoS Constraints
TL;DR: It is analytically proved that in the C-ANOMA systems with a sufficiently large block length, the strong user attains the same throughput to decode its own message while both users can achieve a higher throughput to decoding the weak user’s message compared with those in the cooperative NOMA (C-NOMA) systems.
References
More filters
Proceedings ArticleDOI
Achieving single channel, full duplex wireless communication
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.