Next Article in Journal
Automatic Spray Trajectory Optimization on Bézier Surface
Next Article in Special Issue
Wireless-Powered Cooperative MIMO NOMA Networks: Design and Performance Improvement for Cell-Edge Users
Previous Article in Journal
SSCFM: Separate Signature-Based Control Flow Error Monitoring for Multi-Threaded and Multi-Core Environments
Previous Article in Special Issue
Recent Developments of Reconfigurable Antennas for Current and Future Wireless Communication Systems
Article

Multi-Points Cooperative Relay in NOMA System with N-1 DF Relaying Nodes in HD/FD Mode for N User Equipments with Energy Harvesting

1
Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, 17. listopadu 2172/15, 708 33 Ostrava-Poruba, Czech Republic
2
Faculty of Electronics and Telecommunications, Sai Gon University, 220 Tran Binh Trong st., Dict. 5, Ho Chi Minh City, Vietnam
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(2), 167; https://doi.org/10.3390/electronics8020167
Received: 14 December 2018 / Revised: 20 January 2019 / Accepted: 29 January 2019 / Published: 1 February 2019
(This article belongs to the Special Issue Recent Technical Developments in Energy-Efficient 5G Mobile Cells)
Non-Orthogonal Multiple Access (NOMA) is the key technology promised to be applied in next-generation networks in the near future. In this study, we propose a multi-points cooperative relay (MPCR) NOMA model instead of just using a relay as in previous studies. Based on the channel state information (CSI), the base station (BS) selects a closest user equipment (UE) and sends a superposed signal to this UE as a first relay node. We have assumed that there are N UEs in the network and the N-th UE, which is farthest from BS, has the poorest quality signal transmitted from the BS compared the other UEs. The N-th UE received a forwarded signal from N 1 relaying nodes that are the UEs with better signal quality. At the i-th relaying node, it detects its own symbol by using successive interference cancellation (SIC) and will forward the superimposed signal to the next closest user, namely the ( i + 1 ) -th UE, and include an excess power which will use for energy harvesting (EH) intention at the next UE. By these, the farthest UE in network can be significantly improved. In addition, closed-form expressions of outage probability for users over both the Rayleigh and Nakagami-m fading channels are also presented. Analysis and simulation results performed by Matlab software, which are presented accurately and clearly, show that the effectiveness of our proposed model and this model will be consistent with the multi-access wireless network in the future. View Full-Text
Keywords: cooperative NOMA; multi-points DF relaying nodes; half-duplex; full-duplex; Rayleigh fading channels; Nakagami-m fading channels; energy harvesting cooperative NOMA; multi-points DF relaying nodes; half-duplex; full-duplex; Rayleigh fading channels; Nakagami-m fading channels; energy harvesting
Show Figures

Figure 1

MDPI and ACS Style

Tran, T.-N.; Voznak, M. Multi-Points Cooperative Relay in NOMA System with N-1 DF Relaying Nodes in HD/FD Mode for N User Equipments with Energy Harvesting. Electronics 2019, 8, 167. https://doi.org/10.3390/electronics8020167

AMA Style

Tran T-N, Voznak M. Multi-Points Cooperative Relay in NOMA System with N-1 DF Relaying Nodes in HD/FD Mode for N User Equipments with Energy Harvesting. Electronics. 2019; 8(2):167. https://doi.org/10.3390/electronics8020167

Chicago/Turabian Style

Tran, Thanh-Nam; Voznak, Miroslav. 2019. "Multi-Points Cooperative Relay in NOMA System with N-1 DF Relaying Nodes in HD/FD Mode for N User Equipments with Energy Harvesting" Electronics 8, no. 2: 167. https://doi.org/10.3390/electronics8020167

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop