Results 71 to 80 of about 184,691 (254)
Transactions on Emerging Telecommunications Technologies, Volume 36, Issue 7, July 2025.We introduce a novel model of an IRS‐assisted MU‐MISO‐OFDMA system. We aim to jointly optimize beamforming vectors, IRS reflection coefficients, and OFDM subcarrier allocation to maximize the overall sum rate. ABSTRACT In this article, we propose a novel resource allocation strategy for multiuser multiple‐input single‐output orthogonal frequency ...
Binh‐Minh Vu, Oh‐Soon Shin
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Transactions on Emerging Telecommunications Technologies, Volume 36, Issue 6, June 2025.This paper explicitly reviews the state‐of‐the‐art RIS‐assisted wireless networks, especially open challenges relating to the B5G and 6G networks. This work presents an intensive study of recent research on RIS to provide an in‐depth understanding of the underlying principles surrounding RIS operations, composition, and effect on EM waves.
Chukwuemeka Nwufo +2 more
wiley +1 more source
Hybrid Precoder and Combiner Design with Low Resolution Phase Shifters in mmWave MIMO Systems [PDF]
, 2017 Millimeter wave (mmWave) communications have been considered as a key technology for next generation cellular systems and Wi-Fi networks because of its advances in providing orders-of-magnitude wider bandwidth than current wireless networks.
Li, Ming +3 more
core +2 more sources
Near-Field Multiuser Beam-Training for Extremely Large-Scale MIMO Systems [PDF]
IEEE Transactions on CommunicationsExtremely large-scale multiple-input multiple-output (XL-MIMO) systems are capable of improving spectral efficiency by employing far more antennas than conventional massive MIMO at the base station (BS).
Wang Liu +4 more
semanticscholar +1 more source
Physical layer security in satellite communication: State‐of‐the‐art and open problems
IET Communications, Volume 19, Issue 1, January/December 2025.This paper first classifies contemporary satellite communication networks into five domains and then analyse the use of PLS in each domain; these domains are hybrid satellite‐terrestrial networks, satellite‐based IoT, navigation satellite systems, FSO‐based satellites, and inter‐satellite communications.
Nora Abdelsalam +2 more
wiley +1 more source
Performance Analysis for Linearly Precoded LTE Downlink Multiuser MIMO
EURASIP Journal on Wireless Communications and Networking, 2011 The average channel capacity and the SINR distribution for multiuser multiple input multiple output (MIMO) systems in combination with the base station based packet scheduler are analyzed in this paper.
Xiao Pei, Lin Zihuai, Wu Yi
doaj
Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
EURASIP Journal on Advances in Signal Processing, 2006 Chi et al. proposed a fast kurtosis maximization algorithm (FKMA) for blind equalization/deconvolution of multiple-input multiple-output (MIMO) linear time-invariant systems.
Peng Chun-Hsien +2 more
doaj +1 more source
Multiuser Heterogeneous-SNR MIMO Systems
KSII Transactions on Internet and Information Systems, 2014 Previous studies on multiuser multiple-input multiple-output (MIMO) mostly assume a homogeneous signal-to-noise ratio (SNR), where each user has the same average SNR. However, real networks are more likely to feature heterogeneous SNRs (a random-valued average SNR).
openaire +1 more source
Channel Estimation for Indoor Terahertz UM‐MIMO: A Deep Learning Perspective for 6G Applications
IET Communications, Volume 19, Issue 1, January/December 2025.This paper introduces a deep learning‐based framework for channel estimation in terahertz (THz) ultra‐massive multiple‐input multiple‐output systems, combining fully connected neural network for linear estimation and connected neural network for non‐linear refinement.
Sakhshra Monga +3 more
wiley +1 more source
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
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