Results 51 to 60 of about 4,308 (180)
A multidimensional phase-locked loop for blind multiuser detection [PDF]
IEEE Transactions on Signal Processing, 2002 This paper concerns the problem of blind multiuser detection, a special case of the blind source separation problem in which the source signals have finite alphabets. Specifically, we address the problem of identifying and resolving the n/spl times/n unitary matrix ambiguity U that results from whitening the receiver observations, where n is the number
John R. Barry, Anuj Batra
openaire +1 more source
Veterinary Medicine and Science, Volume 11, Issue 5, September 2025.This study investigated the total and neutralizing antibodies transferred to offspring from three mares from Vital Brazil Institute that were pre‐immunized with recombinant SARS‐CoV‐2 trimeric spike protein. They became pregnant during the immunization protocol.
Victor Augusto Roncaglia‐Pereira +12 more
wiley +1 more source
Innovative Channel Estimation Methods for Massive MIMO Using GAN Architectures
IET Communications, Volume 19, Issue 1, January/December 2025.This paper proposes a novel channel estimation framework for massive multiple‐input multiple‐output (MIMO) systems using conditional generative adversarial networks with a U‐Net‐based generator and sequential convolutional neural network discriminator.
Sakhshra Monga +5 more
wiley +1 more source
Blind Direct Multiuser Detection for Uplink MC-CDMA: Performance Analysis and Robust Implementation
EURASIP Journal on Wireless Communications and Networking, 2004 We consider the problem of blind (i.e., without training sequences) linear mitigation of multiple-access interference in the uplink of quasi-synchronous multicarrier code-division multiple-access (MC-CDMA) systems.
Gelli Giacinto +2 more
doaj +2 more sources
An Immersive Virtual Reality Bimanual Telerobotic System With Haptic Feedback
IET Cyber-Systems and Robotics, Volume 7, Issue 1, January/December 2025.ABSTRACT In robotic bimanual teleoperation, multimodal sensory feedback plays a crucial role, providing operators with a more immersive operating experience, reducing cognitive burden and improving operating efficiency. In this study, we develop an immersive bilateral isomorphic bimanual telerobotic system, which comprises dual arms and dual dexterous ...
Han Xu +8 more
wiley +1 more source
Multiuser MIMO-OFDM for Next-Generation Wireless Systems
, 2007 This overview portrays the 40-year evolution of orthogonal frequency division multiplexing (OFDM) research. The amelioration of powerful multicarrier OFDM arrangements with multiple-input multiple-output (MIMO) systems has numerous benefits, which are ...
Hanzo, L, Jiang, M
core +2 more sources
Human Behavior and Emerging Technologies, Volume 2025, Issue 1, 2025.Effectively using immersive multiuser environments for digital applications (via virtual, augmented and mixed reality technologies) beckons the future of healthcare delivery in the metaverse. We aimed to evaluate the feasibility and effectiveness of immersive multiuser environments used in health applications while identifying their design features. We
Tohid Zarei +7 more
wiley +1 more source
Direct blind multiuser detection without channel estimation and equalizer design
Tongxin xuebao, 2005 The blind equalization and multiuser detection problem for synchronous high-rate DS-CDMA systems in dispersive channels was considered. Using only the spreading code of the desired user and the property that the transmitted signals belong to the finite ...
ZHANG Zhi-yong1, LING Yun2
doaj +2 more sources
Blind user detection in doubly-dispersive DS/CDMA channels
, 2009 In this work, we consider the problem of detecting the presence of a new user in a direct-sequence/code-division-multiple-access (DS/CDMA) system with a doubly-dispersive fading channel, and we propose a novel blind detection strategy which only requires
Buzzi, Stefano +3 more
core +1 more source
Advanced Intelligent Systems, Volume 6, Issue 8, August 2024.This article reviews intelligent communication anti‐jamming evolution from adaptive methods to game theory and machine learning advancements. The concept of intelligent anti‐jamming is defined, and a system architecture is proposed. It highlights challenges, research findings, and future directions, aiming to provide a comprehensive understanding and ...
Quan Zhou, Yingtao Niu
wiley +1 more source