Results 31 to 40 of about 247 (176)

Application of time-reversal with MMSE equalizer to UWB communications [PDF]

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005
We propose to apply a technique called time-reversal to UWB communications. In time-reversal a signal is precoded such that it focuses both in time and in space at a particular receiver. Spatial focusing reduces interference to other co-existing systems.
Thomas Strohmer, Majid Emami, Jan Hansen 0001, George Papanicolaou, Arogyaswami Paulraj   +4 more
openaire   +1 more source

Symbol‐Level GRAND‐Assisted Detection for Polar‐Coded Spatial Modulation in MIMO Systems

International Journal of Communication Systems, Volume 39, Issue 7, 10 May 2026.
This research presents an integrated polar‐coded spatial modulation (PCSM) transceiver scheme for MIMO transmission over Rayleigh fading channels. The proposed architecture employs linear spatial signal processing for antenna and symbol estimation, followed by symbol‐level guessing random additive noise decoding (symbol‐level GRAND)–assisted detection ...
Abhilasha Gautam, Prabhat Thakur, Ghanshyam Singh   +2 more
wiley   +1 more source

A Three-Stage-Concatenated Non-Linear MMSE Interference Rejection Combining Aided MIMO-OFDM Receiver and its EXIT-Chart Analysis

IEEE Open Journal of Vehicular Technology
The demodulation reference signal of the 5G Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFDM) waveform has been designed for supporting Minimum Mean-Square Error-Interference Rejection Combining (MMSE-IRC) equalization,
Jue Chen, Siyao Lu, Tsang-Yi Wang, Jwo-Yuh Wu, Chih-Peng Li, Soon Xin Ng, Robert G. Maunder, Lajos Hanzo   +7 more
doaj   +1 more source

Performance improvement of mode division multiplexing free space optical communication system through various atmospheric conditions with a decision feedback equalizer

Cogent Engineering, 2022
Free space optics (FSO) systems use the atmosphere as a propagation medium. However, a common problem is atmospheric turbulence, including fog, rain, and haze that emerges between the transmitter and the receiver from time to time.
Abdullah Almogahed, Angela Amphawan, Fathey Mohammed, Abdulwadood Alawadhi   +3 more
doaj   +1 more source

Value‐based prices of emerging disease‐modifying therapies for Alzheimer's disease in 174 countries: a cost‐effectiveness and threshold analysis

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Countries have varying, limited healthcare budgets for emerging disease‐modifying therapies. Cost‐effectiveness analysis, combined with country‐level cost‐effectiveness thresholds, can be used to estimate value‐based prices (VBPs) for lecanemab and donanemab across 174 countries.
Men Thi Hoang, James G. Kahn, Sanjib Saha, Dominic Trépel   +3 more
wiley   +1 more source

Equalizers Design and Performance Simulation for Hybrid MIMO Transmission Schemes in Downlink 4×2 LTE Systems

工程科学与技术, 2011
:In order to supply the downlink receiver design of practical LTE system with effective prior information, downlink 4×2 high order MIMO antennas configuration was considered. Firstly, the received signal model of downlink hybrid MIMO transmission schemes
王会琦, 吕王勇, 史思红, 马洪
doaj  

Evidence for different seeding activities of misfolded tau in classical and rapidly progressive Alzheimer's disease

Brain Pathology, Volume 36, Issue 3, May 2026.
The study analyzed the seeding activity of misfolded tau protein in Alzheimer's disease and rapidly progressive Alzheimer's disease patients and provides evidence for the existence of different tau assemblies supported by differences in cellular toxicity and morphology of thioflavin T‐positive real‐time quaking‐induced conversion products.
Matthias Schmitz, Katrin Thüne, Anna‐Lisa Fischer, Peter Hermann, Maria Cramm, Leonie Sheila Kadel, Wiebke Möbius, Jakob Matschke, Tayyaba Saleem, Neelam Younas, Saima Zafar, Hermann Altmeppen, Markus Glatzel, Inga Zerr   +13 more
wiley   +1 more source

Benchmarking speech biomarkers of Alzheimer's against cognitive and neural measures

Alzheimer's &Dementia, Volume 22, Issue 4, April 2026.
Abstract INTRODUCTION Digital speech biomarkers (DSBs) support the detection and monitoring of Alzheimer's disease (AD) in Latinos. However, they have not been benchmarked against standard cognitive and neuroimaging measures, missing a critical validation milestone. METHODS Thirty‐three AD patients and 33 healthy controls completed verbal fluency tasks,
Ivan Caro, Gonzalo Pérez, Joaquín Valdés Bize, Joaquín Ponferrada, Franco J. Ferrante, Alejandro Sosa Welford, Lara Gauder, Loreto Olavarría, Fernando Henríquez, Teresita Ramos, Cristina Besnier, Luciana Ferrer, Maria Luisa Gorno‐Tempini, Andrea Slachevsky, Agustín Ibañez, Adolfo M. García   +15 more
wiley   +1 more source

Low-Complexity Banded Equalizers for OFDM Systems in Doppler Spread Channels

EURASIP Journal on Advances in Signal Processing, 2006
Recently, several approaches have been proposed for the equalization of orthogonal frequency-division multiplexing (OFDM) signals in challenging high-mobility scenarios. Among them, a minimum mean-squared error (MMSE) block linear equalizer (BLE), based
Leus Geert, Rugini Luca, Banelli Paolo
doaj   +1 more source

A Review of Vagus Nerve Stimulation for Disease: Comprehensive Theory and Evidence for Mechanisms of Action

Comprehensive Physiology, Volume 16, Issue 2, April 2026.
Vagus nerve stimulation (VNS) effects span central and peripheral organ systems through diverse mechanistic pathways. This comprehensive review provides a unified synthesis of these mechanisms across neurological, cardiovascular, immunological, metabolic, and gastrointestinal domains, filling a critical gap and serving as a foundational resource for ...
Yifeng Bu, Alex Liang, Benjamin U. Hoffman, Dawn M. Schiehser, Oliver Case, Alan Simmons, Ruth Klaming, Andres Gottfried‐Blackmore, Ravinder K. Mittal, Christopher Puleo, Hubert Lim, Imanuel Lerman   +11 more
wiley   +1 more source