Results 21 to 30 of about 6,870,757 (231)
Heart rate, a poor predictor of Pulmonary Embolism
Panorama of Emergency Medicine, 2023 Objective: To determine if there is a significant difference in vital signs between patients with confirmed and excluded pulmonary embolism (PE) throughout their Emergency Department presentation. Methods: We conducted a retrospective cohort study with
Melinda Fernando +3 more
doaj +1 more source
A new FWHT‐CMF‐DFE based approach for channel equalization in CP‐free OFDM systems
IET Communications, 2021 Orthogonal frequency division multiplexing (OFDM) has been widely used in wireless communication systems due to its robustness against the frequency selectivity of fading channels. It provides optimal performance and it also meets the requirements of the
Gazihan Aykırı +3 more
doaj +1 more source
Performance evaluation of Nakagami‐m fading with impulsive noise
IET Communications, 2021 The main motivation for considering noise to be Gaussian is the central limit theorem (CLT), which accounts for the perturbations that are additive in nature.
Umer Ashraf, Gh. Rasool Begh
doaj +1 more source
, 2010 This correspondence motivates simple and accurate evaluation of the error probability of multiantenna multiple-input–multipleoutput (MIMO) systems using optimum linear combining (OLC).
Yang, Lie-Liang, Yang, Wei
core +2 more sources
Low‐complexity BER computation for coherent detection of orthogonal signals
Electronics Letters, 2021 The bit error rate (BER) computation for coherently detected orthogonal signals in additive white Gaussian noise requires numerical integration, which can be cumbersome in low‐complexity devices. Here, a BER computation approach that circumvents the need
L. Rugini, G. Baruffa
doaj +1 more source
Over‐the‐air equalization with reconfigurable intelligent surfaces
IET Communications, 2022 Reconfigurable intelligent surface (RIS)‐empowered communications is on the rise and is a promising technology envisioned to aid in 6G and beyond wireless communication networks.
Emre Arslan +3 more
doaj +1 more source
Adaptive minimum error-rate filtering design: a review
, 2008 Adaptive filtering has been an enabling technology and has found ever-increasing applications in various state-of-the-art communication systems. Traditionally, adaptive filtering has been developed based on the Wiener or minimum mean square error (MMSE ...
Chen, Sheng +3 more
core +2 more sources
Results for Channel Error Profiles for DECT [PDF]
, 1996 This letter presents the main statistical characterization of the underlying error process obtained in the case of the Digital European Cordless Telecommunications (DECT) radio system.
Garcia-Frias, J +3 more
core +4 more sources
A U-statistic estimator for the variance of resampling-based error estimators [PDF]
, 2013 We revisit resampling procedures for error estimation in binary classification in terms of U-statistics. In particular, we exploit the fact that the error rate estimator involving all learning-testing splits is a U-statistic.
De Bin, Riccardo +7 more
core +1 more source
Enhanced MMSE channel estimation using timing error statistics for wireless OFDM systems [PDF]
, 2004 Estimation and tracking of the frequency-selective time-varying channel response is a challenging task for wireless communication systems incorporating coherent OFDM.
Jayalath, Dhammika +1 more
core +2 more sources