Results 21 to 30 of about 527,650 (162)
Novel Leakage-Based Capacity Enhancement Scheme for Multi-User OAM Communications
IEEE AccessThis paper explores a novel leakage-based capacity enhancement scheme in an orbital angular momentum (OAM) integrated multiuser MIMO system, where the leakage refers to the signal interference affecting other users.
Aye Yadanar Win +2 more
doaj +1 more source
CDMA wireless system with blind multiuser detector
Journal of Telecommunications and Information Technology, 2006 In this paper we present an approach capable of countering the presence of multiple access interference (MAI) in code division multiple access (CDMA) channels.
Wai Yie Leon, John Homer
doaj +1 more source
Support Vector Machine-Based Transmit Antenna Allocation for Multiuser Communication Systems
Entropy, 2019 In this paper, a support vector machine (SVM) technique has been applied to an antenna allocation system with multiple antennas in multiuser downlink communications. Here, only the channel magnitude information is available at the transmitter.
Huifa Lin, Won-Yong Shin, Jingon Joung
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IEEE Photonics Journal, 2020 In multiuser optical wireless communications (OWC), the multiuser interference becomes significant as the number of users increases. This would lead to a poor quality of service with a low signal-to-interference-plus-noise-ratio (SINR) or even a failure ...
Sudhanshu Arya, Yeon Ho Chung
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Holographic Mapping of Orbital Angular Momentum using a Terahertz Diffractive Optical Neural Network
Advanced Intelligent Discovery, EarlyView.A compact six‐layer diffractive optical neural network enables direct recognition and spatial mapping of terahertz (THz) orbital angular momentum (OAM) beams. Fabricated by 3D printing, the system distinguishes nine OAM modes and their superpositions with high fidelity, good efficiency, and low crosstalk, offering a scalable solution for THz ...
Wei Jia +3 more
wiley +1 more source
EURASIP Journal on Advances in Signal Processing, 2023 Exploiting generalized spatial modulation in massive MIMO system, we develop an efficient uplink multiuser detection scheme. Different from the maximum likelihood detection algorithm, the spatial and temporal data in the proposed detection scheme are ...
Wei-Chiang Wu
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Journal of Applied Toxicology, EarlyView.ABSTRACT Chlorothalonil (CHL) is a widely used organochlorine fungicide frequently detected in environmental and food matrices. Although increasing evidence indicates adverse effects in nontarget species, the mechanisms underlying CHL‐induced male reproductive toxicity remain incompletely understood.
Cristiana Livramento Oliveira Pinto +7 more
wiley +1 more source
Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection for DS-CDMA and SDMA Systems Employing I-Q Modulation [PDF]
, 2010 The so-called receiver multiuser diversity aided multistage minimum mean-square error multiuser detector (RMD/MS-MMSE MUD), which was proposed previously by the author, is investigated in the context of the direct-sequence code-division multiple-access ...
Yang, Lie-Liang, Lie-Liang Yang
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MBER Turbo Multiuser Beamforming Aided QPSK Receiver Design using EXIT Chart Analysis [PDF]
, 2007 This paper studies the mutual information transfer characteristics of a novel iterative soft interference cancellation (SIC) aided beamforming receiver designed for quadrature phase shift keying (QPSK) modulated systems communicating over additive white ...
Tan, S., Hanzo, L., Chen, S.
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Novel Chaos Secure Communication System Based on Walsh Code
Journal of Electrical and Computer Engineering, 2015 A multiuser communication scheme which is a hybrid of Walsh code with DCSK and CDSK is proposed to improve low data transmission rate of Differential Chaos Shift Keying (DCSK), poor bit error ratio (BER) performance of Correlation Delay Shift Keying ...
Gang Zhang, Niting Cui, Tianqi Zhang
doaj +1 more source