Proceedings ArticleDOI
Performance analysis of downlink power domain NOMA under fading channels
Haleema Sadia,Muhammad Zeeshan,Shahzad Amin Sheikh +2 more
- pp 1-6
TLDR
In this paper, an in-depth analysis of downlink power domain NOMA is provided under various fading channels, modulation schemes and channel coding rates, providing a good foundation for the development of Adaptive Modulation & Coding (AMC) schemes for future N OMA-based 5G systems.Abstract:
The increasing demands of high throughput and capacity in 5G are posing different challenges on the design of multiple access schemes. To meet these challenges, Non-orthogonal multiple access (NOMA) is considered as one of the potential candidates. Broadly, NOMA is classified as power-domain and code-domain NOMA. Power-domain NOMA serves multiple users with the same time, frequency and code, but using different power levels. This feature make NOMA capable of increasing spectral efficiency gain over the conventional multiple access schemes. In this paper, an in-depth analysis of downlink power domain NOMA is provided under various fading channels, modulation schemes and channel coding rates. Power domain multiplexing with superposition coding is done at the transmitter side and practical successive interference cancellation (SIC) is used at the receiver side. Performance is analyzed by simulations on the basis of Bit error rate (BER) using AWGN, Rician and Rayleigh channel models for various modulation schemes and code rates. This analysis provides a good foundation for the development of Adaptive Modulation & Coding (AMC) schemes for future NOMA-based 5G systems.read more
Citations
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Book Chapter
Non-Orthogonal Multiple Access (NOMA) for cellular future radio access
TL;DR: Considering the trend in 5G, achieving significant gains in capacity and system throughput performance is a high priority requirement in view of the recent exponential increase in the volume of mobile traffic and the proposed system should be able to support enhanced delay-sensitive high-volume services.
Journal ArticleDOI
Ambient backscatter communications over NOMA downlink channels
Weiyu Chen,Haiyang Ding,Shilian Wang,Daniel Benevides da Costa,Fengkui Gong,Pedro H. J. Nardelli +5 more
TL;DR: This paper derives the optimal reflection coefficient at BD, the optimal total transmit power at BS, and the optimal power allocation at BS for each transmission block to maximize the ergodic capacity of the ambient backscatter transmission on the premise of preserving the outage performance of the NOMA downlink transmission.
Journal ArticleDOI
A New Green Prospective of Non-orthogonal Multiple Access (NOMA) for 5G
Vishaka Basnayake,Dushantha Nalin K. Jayakody,Vishal Sharma,Nikhil Sharma,P. Muthuchidambaranathan,Hakim Mabed +5 more
TL;DR: The concept of green NomA is introduced in a generalized manner to identify the energy efficient NOMA schemes that will result in an optimal scenario in which the energy generated for communication is managed sustainably and the effect on the environment, economy, living beings, etc is minimized.
Journal ArticleDOI
Power splitting versus time switching based cooperative relaying protocols for SWIPT in NOMA systems
TL;DR: It is shown that the cooperative relaying NOMA (CRNOMA) scheme achieves a lower outage probability when compared to the conventional orthogonal multiple access (OMA), and the PSR outperforms the TSR in both low and high signal-to-noise ratio ( S N R ) regions in terms of throughput, ergodic rate and energy efficiency.
Journal ArticleDOI
Backscatter Cooperation in NOMA Communications Systems
Weiyu Chen,Haiyang Ding,Shilian Wang,Daniel Benevides da Costa,Fengkui Gong,Pedro H. J. Nardelli +5 more
TL;DR: Unlike the two relaying-based cooperative schemes, the proposed BC-NOMA scheme can enhance the transmission reliability without impairing the spectrum efficiency, which makes backscattering an appealing solution to cooperative NOMA downlinks.
References
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Proceedings ArticleDOI
Non-Orthogonal Multiple Access (NOMA) for Cellular Future Radio Access
TL;DR: It is shown that the downlink NOMA with SIC improves both the capacity and cell-edge user throughput performance irrespective of the availability of the frequency-selective channel quality indicator (CQI) on the base station side.
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