Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges
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In this paper, the authors comprehensively survey the recent progress of NOMA in 5G systems, reviewing the state-of-the-art capacity analysis, power allocation strategies, user fairness, and user-pairing schemes in NOMAs.Abstract:Â
Non-orthogonal multiple access (NOMA) is one of the promising radio access techniques for performance enhancement in next-generation cellular communications. Compared to orthogonal frequency division multiple access (OFDMA), which is a well-known high-capacity orthogonal multiple access (OMA) technique, NOMA offers a set of desirable benefits, including greater spectrum efficiency. There are different types of NOMA techniques, including power-domain and code-domain. This paper primarily focuses on power-domain NOMA that utilizes superposition coding (SC) at the transmitter and successive interference cancellation (SIC) at the receiver. Various researchers have demonstrated that NOMA can be used effectively to meet both network-level and user-experienced data rate requirements of fifth-generation (5G) technologies. From that perspective, this paper comprehensively surveys the recent progress of NOMA in 5G systems, reviewing the state-of-the-art capacity analysis, power allocation strategies, user fairness, and user-pairing schemes in NOMA. In addition, this paper discusses how NOMA performs when it is integrated with various proven wireless communications techniques, such as cooperative communications, multiple input multiple output (MIMO), beamforming, space time coding, and network coding, among others. Furthermore, this paper discusses several important issues on NOMA implementation and provides some avenues for future research.read more
Citations
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Journal ArticleDOI
Performance analysis for uplink NOMA-based cellular network with M2M/H2H co-existence
TL;DR: Simulation results show that the NOMA scheme outperforms the orthogonal multiple access in terms of outage probability and EC and the expressions for outage probabilityand effective capacity are theoretically derived with the constraints of quality-of-service requirements.
Book ChapterDOI
Better User Clustering Scheme in Distributed NOMA Systems
TL;DR: A new dynamic clustering scheme called DC-NOMA based on the channel gain difference to form clusters of more than two users to promote massive connectivity as it allows more users to be inserted into NOMA clusters without degrading system performance.
Book ChapterDOI
Closed-Form Expressions of BER and Capacity for Co-operative NOMA
Simran Sethi,Soumil Tripathi,Shreya Srivastava,Saurabh Katiyar,S. Pratap Singh,M. K. Lakshmanan +5 more
TL;DR: In this article, the performance analysis of cooperative NOMA is presented by presenting the analytical expressions for bit error rate (BER) and capacity, and both FD and HD methods are incorporated into the analysis.
Proceedings ArticleDOI
Security Enhancement in NOMA Cooperative Network with a Proactive Attack Scheme
TL;DR: A proactive protection scheme to mitigate the effect of the cooperative attack on the NOMA system and demonstrate that using proposed proactive attack scheme improve the secrecy performance of the system.
Proceedings ArticleDOI
Performance of Throughput based on Subcarrier Allocation in Non-Orthogonal Multiple Access
TL;DR: It can be concluded that subcarrier allocation is the parameter that affect the performance of throughput in NOMA.
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