Cognitive Radio Assisted Non-Orthogonal Multiple Access: Outage Performance

Nguyen, Hong-Nhu; Le, Si-Phu; Le, Chi‐Bao; Nguyen, Ngoc-Long; Nguyen, Nhat-Tien; Do, Dinh‐Thuan; Vozňák, Miroslav

doi:10.1109/tsp.2019.8768873

Cited by 7 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NOMA performs better at high speed by establishing better backhaul cellular node links. Due to compatibility, NOMA can be combined with many communication technologies, including so-called cooperative NOMA communication [63], visible light communication [64], software-defined multiple access (SDeMA) [65], cognitive radio [66], MIMO and beamforming, to further improve network performance.…”

Section: Noma (Non-orthogonal Multiple Access)mentioning

confidence: 99%

A Review of the Use Cases and Possible Technologies for 5G and Beyond Communications

Ali

Adoum

Bachar³

et al. 2021

CJAST

View full text Add to dashboard Cite

5G communication system is rapidly taking shape and for many organizations, including administrations, it is important to be aware of developments in this regard. At this stage, it is essential to know about 5G use cases and possible key technologies. This paper describes several anticipated 5G use cases across a handful of different sectors. It is important to remember that these comprise only a subset of possible use cases and these are all still new. As-yet more new use cases are expected to emerge and the need to prepare their adaption in 5G and beyond. From wireless transmission, wireless access and network perspectives, the possible key technologies of 5G, including Massive Multiple Input Multiple Output (MIMO), Beam-forming, Device-to-Device communication system (D2D), non-orthogonal multiple access (NOMA), Full duplex, Small cells, cognitive radio(CR), etc. and their latest progress are presented comprehensively and thoroughly. Each has enormous advantages but also limitations. The Full duplex which will help to double the capacity of the channel compared to the Half-duplex technology of 4G and Small cells combined with millimeter waves to have a wide bandwidth. These Small-Cells are essential for energy reduction and also for improving latency. But these Small-Cells require the use of intelligent antennas, that is to say, the diagrams of which are directive and reconfigurable at the request of the user Future research challenges regarding 5G and beyond wireless communication are also discussed.

show abstract

Section: Noma (Non-orthogonal Multiple Access)mentioning

confidence: 99%

A Review of the Use Cases and Possible Technologies for 5G and Beyond Communications

Ali

Adoum

Bachar³

et al. 2021

CJAST

View full text Add to dashboard Cite

show abstract

“…Hybrid NOMA schemes require an effective way to separate NOMA / OMA users. Promising techniques to successfully separate NOMA/OMA users are the ones used in Cognitive Radio: a few decades ago, Cognitive Radio (CR) technology was proposed to improve spectrum utilization by allowing a secondary user (SU) to access idle spectrum allocated to a primary user (PU) [6]. Lately, the usage of Cognitive Radio-based NOMA (CR-NOMA) for power domain NOMA has been suggested to allow the SU spectrum regardless of the presence of the primary user [7] and also to separate users in NOMA/OMA hybrid schemes [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…to the nearest base station (BS). CR-NOMA principle should be used with several significant changes in 5G and beyond networks since meticulous analysis [6,7] of existing SIC proposals shows that if it is applied to Doubly Selective channels, some significant changes and improvements are required due to:…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, according to [6,7] and our own study, shown in Section 4, OMA signal and multiuser signals can be effectively approximated by means of a Gaussian random process model. Besides, the physical nature of the Doubly Selective Channels (high selectivity in both domains) shifts signals to an "almost" Gaussian random process, no matter what service they belong to.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

NOMA Transmission Systems: Overview of SIC Design and New Findings

Estrello¹,

Ramos-Alarcon²,

Kontorovich³

2022

Multiplexing - Recent Advances and Novel Applications

View full text Add to dashboard Cite

Non-Orthogonal Multiple Access (NOMA) has been recently proposed as a good alternative to meet 5G and beyond requirements in terms of high spectral efficiency, massive connectivity, and low latency. It has been demonstrated that the use of NOMA in downlink has superior performance in terms of throughput, whereas the use in uplink outperforms OMA techniques in terms of fairness. A distinctive feature of NOMA is the presence of excessive multiple-access interference due to the case of usage of power domain to multiplex signals, thus the functional implementation of NOMA implies Successive Interference Cancelation (SIC) to combat this interference. Therefore, SIC design becomes the main point in the effectiveness of NOMA systems. On the other hand, hybrid schemes, NOMA/OMA, have been recently proposed to reduce the drawbacks of pure NOMA systems. However, in these schemes, it becomes necessary to distinguish NOMA and OMA users. Cognitive Radio techniques turn to be a good option to effectively separate NOMA/OMA users as well as to distinguish NOMA users. In this chapter, a brief overview of NOMA techniques related to Cognitive Radio technology (CR-NOMA) and SIC design reported in the literature is presented. Also, new findings about NOMA/OMA users’ recognition are described.

show abstract

“…(see details at [1], [3], etc.). A brief overview of the works considered as most important [1][2][3][4][5][6][7][8][9][10][11][12] is presented in the following. As it can be inferred from [4]- [5], the SIC decoding order based on the CSI turns critical and can have important influence on the system's performance.…”

Section: Introductionmentioning

confidence: 99%

Comments on SIC design for SISO NOMA Systems over Doubly Selective Channels.

Kontorovich¹

2022

Preprint

View full text Add to dashboard Cite

Non-orthogonal multiple access principle applied in power domain (power-domain NOMA) enhances spectrum efficiency and connectivity of mobile communication systems through sharing between Orthogonal Multiple Access (OMA) and other multiple users. It is the almost main current trend for research and standards for 5G and beyond. Spectrum sharing generates multi-users interference (Multiple Access Interference, MAI) which destroys orthogonality in OMA systems. Meanwhile the so-called Successive Interference Cancellation (SIC) techniques are used to suppress MAI and the Cognitive Radio (CR) principle (CR-NOMA) for decoding order for multiple users inspired effective SIC algorithms. The CR-NOMA principle is applied in the present material as well, but with significant changes for SIC design as for Doubly Selective channels. Due to the above reasons, two original SIC design methods are proposed hereafter following the CR-NOMA principle. Regarding to it the OMA signal (primary user) is decoded first using a Chaos-based quasi-optimum Extended Kalman Filter (EKF). The set of “secondary users” (multiusers) are proposed to be decoded secondly by the following two different methods: - Chaos-based EKF filters or , - Sequential m hypothesis testing. The proposed approach for SIC design is rather simple, fast and accurate for practical implementation.

show abstract

Cognitive Radio Assisted Non-Orthogonal Multiple Access: Outage Performance

Cited by 7 publications

References 14 publications

A Review of the Use Cases and Possible Technologies for 5G and Beyond Communications

A Review of the Use Cases and Possible Technologies for 5G and Beyond Communications

NOMA Transmission Systems: Overview of SIC Design and New Findings

Comments on SIC design for SISO NOMA Systems over Doubly Selective Channels.

Contact Info

Product

Resources

About