Results 51 to 60 of about 3,134,060 (181)
, 2004 We address blind multiuser detection in a DS-CDMA downlink channel in the presence of carrier frequency offset. The synchronous users are separated by re-establishing orthogonality of their spreading sequences in a shared equaliser at the chip level. The
Weiss, S +5 more
core +1 more source
DS/CDMA Multiuser Detectors Based on Subspace Methods
Semina: Ciências Exatas e Tecnológicas, 2006 In this work blind and group-blind (Bld-MuD and SBld-MuD, respectively) multiuser detectors (MuD) are analyzed from the point of view of the trade-off between performance versus complexity; specifically, the blind and group-blind detectors are ...
Paul Jean Etienne Jeszensky +2 more
doaj
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
Maximum likelihood multi-user MIMO detection with blind modulation classification
Scientific ReportsMulti-User MIMO (MU-MIMO) detection plays a pivotal role in modern wireless receivers, yet practical downlink deployments are severely bottlenecked when co-scheduled users employ unknown and highly heterogeneous modulation formats.
Peng Wang, Eryi Hu
doaj +1 more source
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
ETRI Journal, 2019 In time division duplex (TDD)‐based multiuser massive multiple input multiple output (MIMO) systems, the uplink channel is estimated and the results are used in downlink for signal detection. Owing to noisy uplink channel estimation, the downlink channel
Parisa Pasangi +2 more
doaj +1 more source
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
Blind Reduced-Rank MMSE Detector for DS-CDMA Systems
EURASIP Journal on Advances in Signal Processing, 2002 We first develop a reduced-rank minimum mean squared error (MMSE) detector for direct-sequence (DS) code division multiple access (CDMA) by forcing the linear MMSE detector to lie in a signal subspace of a reduced dimension.
Ge Hongya, Akansu Ali N, Cai Xiaodong
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Blind adaptive receiver for uplink multiuser massive MIMO systems
ETRI Journal, 2019 Herein, we consider uplink multiuser massive multiple‐input multiple‐output systems when multiple users transmit information symbols to a base station (BS) by applying simple space‐time block coding (STBC).
Joonwoo Shin, Bangwon Seo
doaj +1 more source