Wireless power transfer enabled NOMA relay systems: two SIC modes and performance evaluation

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Nowadays, unmanned aerial vehicle (UAV) relays' assisted internet of things (IoT) systems provide facility in order to overcome the large scale fading between source and sink. The full-duplex scheme enables wireless network to provide higher spectrum efficient technology. This paper analyses performance of two users which are served by new emerging non-orthogonal multiple access (NOMA) technique. Exact outage probability of such two users are derived and checked via Monte-Carlo simulation. These analytical results provide guideline to design UAV in real application. This paper provides a comprehensive study to examine impact of interference, fixed power allocation factors to system performance. This is an open access article under the CC BY-SA license.

“…However, open problem still exists related to fading model. This paper fulfills a gap in [13][14][15][16][17][18][19][20][21][22], in which UAV-based relay is not considered.…”

Section: Introductionmentioning

confidence: 95%

Enabling full-duplex in multiple access technique for 5G wireless networks over Rician fading channels

2021

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“…For example, the technique of cooperative transmission applied together with NOMA is suitable with a multi-user environment [5][6][7][8][9][10]. Therefore, the cooperative transmission for NOMA can improve the communication reliability for the users who are in poor channels [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Performance of downlink NOMA with multiple antenna base station, full-duplex and D2D transmission

Nguyen¹,

Do²

2021

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The implementation of non-orthogonal multiple access (NOMA) and transmit antenna selection (TAS) technique has considered in this paper since TASaware base station (BS) provides the low cost, low complexity, and high diversity gains. In this paper, we investigate performance of two users by deriving outage probability. The system performance benefits from design of TAS and full-duplex (FD) scheme applied at NOMA users, and bandwidth efficiency will be enhanced although self-interference exists due to FD. The main contribution lies in the exact expressions of outage probability which are derived to exhibit system performance. Different from the simulated parameters, the analytical results show that increasing number of transmit antennas at the BS is way to improve system performance.

“…Sharing of bandwidth improves the spectral efficiency and more users can be accommodated at once. The capacity of the system can be enhanced by implementing NOMA by means of reducing the interference caused by the sharing user(s) in the same group via successive interference cancellation (SIC) [12][13][14][15][16][17]. Interference, without SIC, tend to grow worse when many users access the system at the same time.…”

Section: Introductionmentioning

confidence: 99%

Ant-colony and nature-inspired heuristic models for NOMA systems: a review

Liyn

Ghani²,

Roslim³

et al. 2020

The increasing computational complexity in scheduling the large number of users for non-orthogonal multiple access (NOMA) system and future cellular networks lead to the need for scheduling models with relatively lower computational complexity such as heuristic models. The main objective of this paper is to conduct a concise study on ant-colony optimization (ACO) methods and potential nature-inspired heuristic models for NOMA implementation in future high-speed networks. The issues, challenges and future work of ACO and other related heuristic models in NOMA are concisely reviewed. The throughput result of the proposed ACO method is observed to be close to the maximum theoretical value and stands 44% higher than that of the existing method. This result demonstrates the effectiveness of ACO implementation for NOMA user scheduling and grouping.