Results 21 to 30 of about 177,513 (261)
Blind Detection of Underwater Acoustic Communication Signals Based on Deep Learning
IEEE Access, 2020 Blind detection of underwater acoustic communication (UWAC) signals is challenging in non-cooperative reception scenarios. Difficulties include but not limited to complex underwater acoustic channels, diversity of signal categories, and data scarcity. To
Yongbin Li +4 more
doaj +1 more source
Blind Multiuser Detection with Array Observations
Wireless Personal Communications, 1998 Cochannel interference is usually a major limitation to the performance of mobile wireless systems. Examples of different forms of cochannel interference include multi-access interference in CDMA systems and cochannel interference resulting from frequency reuse in TDMA systems.
Rodríguez Fonollosa, Javier +3 more
openaire +3 more sources
Index Modulation-Aided Unsourced Random Access in the Block-Fading Channel
IEEE Open Journal of the Communications SocietyIn this article, we propose three index modulation (IM) aided unsourced random access schemes in the block-fading multiple-antenna channel. In all the proposed schemes, the signal frame is partitioned into multiple time slots, and only part of time slots
Yaoxin Gao, Jianping Zheng
doaj +1 more source
PAPR Reduction for Visible Light Communication Systems Without Side Information
IEEE Photonics Journal, 2017 It is well known that visible light communication (VLC) systems with the direct current-biased optical orthogonal frequency division multiplexing (DCO-OFDM) scheme suffers from high peak-to-average power ratio (PAPR), which leads to serve distortion and ...
Wei-Wen Hu, Da-Huei Lee
doaj +1 more source
Sensors, 2022 Thermal infrared hyperspectral imager is one of the frontier payloads in current hyperspectral remote sensing research. It has broad application prospects in land and ocean temperature inversion, environmental monitoring, and other fields.
Bingxin Liu +3 more
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Blind multiuser detection based on instantaneous mixtures
Tongxin xuebao, 2008 A blind multiuser detection technique used in multiple-input multiple-output orthogonal frequency division multiplexing （MIMO-OFDM） systems was proposed.
ZHAO Chen, GOU Bin, WANG Ke
doaj +2 more sources
Semi-Blind Channel-and-Signal Estimation for Uplink Massive MIMO With Channel Sparsity
IEEE Access, 2019 This paper considers the transceiver design for uplink massive multiple-input multiple-output (MIMO) systems with channel sparsity in the angular domain.
Wenjing Yan, Xiaojun Yuan
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida +6 more
wiley +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
wiley +1 more source
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source