Results 11 to 20 of about 52,362 (300)

Trellis-Coded Non-Orthogonal Multiple Access [PDF]

open access: yesIEEE Wireless Communications Letters, 2020
In this letter, we propose a trellis-coded nonorthogonal multiple access (NOMA) scheme. The signals for different users are produced by trellis coded modulation (TCM) and then superimposed on different power levels. By interpreting the encoding process via the tensor product of trellises, we introduce a joint detection method based on the Viterbi ...
Xun Zou, Mehdi Ganji, Hamid Jafarkhani
openaire   +5 more sources

Multiple-Antenna-Assisted Non-Orthogonal Multiple Access [PDF]

open access: yesIEEE Wireless Communications, 2018
16 pages, 4 figures, 2 tables, accepted by IEEE Wireless ...
Liu, Yuanwei   +5 more
openaire   +4 more sources

Non-Orthogonal Frequency Division Multiple Access [PDF]

open access: yes2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 2020
This paper proposes a frequency-domain multiple user access scheme termed non-orthogonal frequency division multiple access (NoFDMA), which maintains the same data rate per user while allowing more users to access via non-orthogonal user overlapping in a given spectral band.
Tongyang Xu, Izzat Darwazeh
openaire   +1 more source

Polar coded non-orthogonal multiple access [PDF]

open access: yes2016 IEEE International Symposium on Information Theory (ISIT), 2016
In this paper, polar codes are first applied in non-orthogonal multiple access (NOMA) and the channel polarization idea is extended to NOMA, which is a major multiple access technique in 5G systems. The polar coded NOMA (PC-NOMA) scheme is proposed, whereby the NOMA channel is decomposed into a series of binary-input channels under a two-stage channel ...
Jincheng Dai   +3 more
openaire   +3 more sources

Investigating High Performance Implementations of Sparse Code Multiple Access (SCMA) Codebook Design

open access: yesJISR on Computing, 2022
- The number of mobile devices, IoT devices, and their applications is increasing day by day in recent years and further going to increase in coming years.
Halar Mustafa
doaj   +1 more source

Non-Orthogonal Multiple Access: A Unified Perspective [PDF]

open access: yesIEEE Wireless Communications, 2018
Non-orthogonal multiple access (NOMA) is a promising technique for future mobile communication systems, which can approach multiuser channel capacity by sharing the same time-frequency resources with multiple users. In this article, we provide a unified framework for NOMA and review the principles of various NOMA schemes in different domains with the ...
Wang, Qi   +3 more
openaire   +4 more sources

Non-orthogonal multiple access for FSO backhauling [PDF]

open access: yes2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018
This paper has been submitted to IEEE WCNC ...
Najafi, Marzieh   +4 more
openaire   +2 more sources

Uplink non-orthogonal multiple access in heterogeneous networks: A review of recent advances and open research challenges

open access: yesInternational Journal of Distributed Sensor Networks, 2022
Fifth-generation wireless communications provide several benefits, including high throughput, lower latency, massive connectivity, considerable improvement in the number of users, higher base station capacity, and achieved quality of service.
Bilal Ur Rehman   +6 more
doaj   +1 more source

NON-ORTHOGONAL MULTIPLE ACCESS SCHEMES SURVEY: AN OVERVIEW OF NON-ORTHOGONAL MULTIPLE ACCESS TECHNIQUES

open access: yesJournal of Engineering and Sustainable Development, 2023
Non-Orthogonal Multiple Access (NOMA) is a promising technology that can significantly improve the performance of wireless communication systems, especially in applications with a high number of users and limited spectral resources. NOMA enables simultaneous transmission and reception of multiple signals at the same time and frequency resources.
Sarab k. mahmood   +2 more
openaire   +1 more source

Cooperative Non-Orthogonal Multiple Access for Future Wireless Communications [PDF]

open access: yesEAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2018
There is a huge demand for increased connectivity and reliability of devices in the fifth generation and beyond of wireless communications so as to ensure massive connectivity and high spectral efficiency.
Sunyoung Lee
doaj   +1 more source

Home - About - Disclaimer - Privacy