Results 31 to 40 of about 16,015,285 (164)
A novel uplink multiple access scheme based on TDS-FDMA
, 2011 This contribution proposes a novel time-domain synchronous frequency division multiple access (TDS-FDMA) scheme to support multi-user uplink application.
Dai, Linglong +2 more
core +2 more sources
Secure Transmission in mmWave NOMA Networks With Cognitive Power Allocation
IEEE Access, 2019 Millimeter wave (mmWave) and non-orthogonal multiple access (NOMA) are two key technologies for future wireless networks. In this paper, secure communication in mmWave NOMA networks based on cognitive power allocation scheme is studied by preferentially ...
Yi Song +4 more
doaj +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In this paper, an integrated digital twin‐based fault‐diagnosis framework is proposed to detect bolt loosening in flanged pipe connections. The approach combines finite element‐based numerical modeling, experimental modal analysis, and advanced signal processing‐assisted deep learning to achieve reliable loosening detection under operational ...
Milad Shabani Yousefabad +4 more
wiley +1 more source
Frequency-domain precoding for single carrier frequency-division multiple access [PDF]
, 2009 At present there is considerable interest in the use of single carrier frequency-division multiple access. This interest is justified by the inherent single carrier structure of the SC-FDMA scheme, which is more robust against phase noise and has a lower
Nix, AR, Noune, MB
core +1 more source
Non-orthogonal Multiple Access (NOMA) with Asynchronous Interference Cancellation [PDF]
, 2015 Non-orthogonal multiple access (NOMA) allows allocating one carrier to more than one user at the same time in one cell. It is a promising technology to provide high throughput due to carrier reuse within a cell.
Haci, Huseyin
core
Heterogeneous Network Bandwidth Control Scheme for the Hybrid OMA-NOMA System Platform
IEEE Access, 2020 The emerging non-orthogonal multiple access (NOMA) has been considered as a promising technology to reach the goals of 5G cellular systems. Due to its superior spectral efficiency, the NOMA has attracted a lot of attention recently, and could play a ...
Sungwook Kim
doaj +1 more source
ETRI Journal, 2023 This paper investigates the effect of hardware impairments (HIs) and imperfect channel state information (ICSI) on a SWIPT-assisted adaptive nonorthogonal multiple access (NOMA)/orthogonal multiple access (OMA) system over independent and nonidentical ...
Jing Guo +3 more
doaj +1 more source
Evaluating Encodings for Bivariate Edges in Adjacency Matrices
Computer Graphics Forum, EarlyView.Abstract We present the first empirical evaluation of techniques for encoding distributions of quantitative edge values within adjacency matrices. In many real‐world networks, edges represent not a single value but a set of measurements. While adjacency matrices preserve structural clarity, their compact cells limit the simultaneous display of multiple
J. Acosta‐Hernández, A. Lex, T. He
wiley +1 more source
Non-orthogonal multiple access for unmanned aerial vehicle assisted communication [PDF]
, 2018 The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed.
Sohail, M. F., Leow, C. Y., Won, S.
core +1 more source
Performance Analysis of Ambient Backscatter NOMA Systems
Applied Sciences, 2023 This paper analyzed the performance of an ambient-backscatter-(AmBC)-assisted non-orthogonal multiple access (NOMA) system, where a backscatter device (BD) broadcasts its signal to numerous users. More specifically, the realistic assumptions of imperfect
Ce Zhang +3 more
doaj +1 more source