Results 41 to 50 of about 141,071 (164)
A spatial interference minimization strategy for the correlated LTE downlink channel [PDF]
, 2010 In a downlink transmission, users can benefit from the high capacity gain achieved by transmitting independent data streams from multiple antennas to multiple users sharing the same physical time-frequency resources.
Nordin, R +5 more
core +1 more source
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces SQUID, a high‐performance, low‐complexitydetection framework designed for massive MIMO systems. By integrating spatialmodulation with compressive sensing, SQUID leverages the inherent sparsity ofSQSM to outperform traditional detectors while significantly reducingcomputational overhead.
Setareh Dehghanfard +2 more
wiley +1 more source
Sum‐Rate Maximization in Movable Antenna Enabled Cell‐Free Massive MIMO System
IET Communications, Volume 20, Issue 1, January/December 2026.This letter investigates the problem of sum‐rate maximization in a cell‐free massive multiple‐input multiple output system enabled by movable antennas (MAs). Our objective is to maximize the system sum‐rate through the joint optimization of the transmit precoding matrice and the MA positions.
Yue Li +5 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
IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.In this study, we utilise a lumped‐parameter model to analyse the twisting dynamics of the drill string with four degrees of freedom. To alleviate stick‐slip oscillations, reduce bit sticking in vertical oil‐well drill strings and diminish saturation effects on control performance, composite nonlinear feedback is used with a supertwist integral sliding
Saeed Amiri +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
doaj +1 more source
Deep‐Learned Channel Estimation for MIMO‐OFDM System by Exploiting Frequency‐Space Correlation
Electronics Letters, Volume 62, Issue 1, January/December 2026.In massive MIMO–OFDM systems, accurate channel state information acquisition is vital for reliable transmission. Traditional methods fail to fully exploit sparse channel correlation, so an attentive residual autoencoder network is proposed. It uses an autoencoder with attention and residual connections to capture frequency–space correlation, and ...
Yiming Wei +5 more
wiley +1 more source
Singular value decomposition-based multiuser multiple-input multiple-output vector perturbation-aided downlink transmitter and lattice-reduction-assisted uplink receiver pair [PDF]
, 2012 : A full-duplex uplink/downlink (UL/DL) system having a UL transmitter/receiver (transceiver) pair and a DL transceiver is considered. Both the UL and DL are improved.
Li, J.-D., Liu, Wei, Li, C, Hanzo, Lajos
core +1 more source
Joint Decision-Directed Channel and Noise-Variance Estimation for MIMO OFDM/SDMA Systems Based on Expectation-Conditional Maximization [PDF]
, 2011 A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multiuser multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing/space-division multiple access (OFDM/SDMA) systems, which is based on ...
Mu, Xiaomin +2 more
core +2 more sources