Results 41 to 50 of about 381,897 (285)

New spectrum sensing method under time-variant flat fading channels

Tongxin xuebao, 2014
A dynamic state-space model (DSM) was presented for the problem of spectrum sensing under time-variant flat fading channels (TVFF).The primary user (PU) state and the fading channel were characterized as hidden states.On this basis,a novel method was ...
Meng-wei SUN, Long ZHAO, Qiao-chun XU, Bin LI, Cheng-lin ZHAO   +4 more
doaj   +2 more sources

Abrls Algorithm For Time Variant Channel Equalisation

, 1998
Publication in the conference proceedings of EUSIPCO, Rhodes, Greece ...
Shimamura, T., Cowan, C.F.N.
openaire   +1 more source

Near-Instantaneously Adaptive HSDPA-Style OFDM Versus MC-CDMA Transceivers for WIFI, WIMAX, and Next-Generation Cellular Systems

, 2007
Burts-by-burst (BbB) adaptive high-speed downlink packet access (HSDPA) style multicarrier systems are reviewed, identifying their most critical design aspects.
Choi, B.J., Hanzo, Lajos
core   +1 more source

Joint Decision-Directed Channel and Noise-Variance Estimation for MIMO OFDM/SDMA Systems Based on Expectation-Conditional Maximization [PDF]

, 2011
A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multiuser multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing/space-division multiple access (OFDM/SDMA) systems, which is based on ...
Hanzo, Lajos, Mu, Xiaomin, Zhang, Jiankang   +2 more
core   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

PixFEL: development of an X-ray diffraction imager for future FEL applications [PDF]

, 2017
A readout chip for diffraction imaging applications at new generation X-ray FELs (Free Electron Lasers) has been designed in a 65 nm CMOS technology. It consists of a 32 × 32 matrix, with square pixels and a pixel pitch of 110 µm.
Battignani, Giovanni, Benkechkache, Mohamed El Amine, Bettarini, Stefano, Casarosa, Giulia, Dalla Betta, Gian-Franco, Fabris, Lorenzo, Forti, Francesco, Giorgi, Marcello, Grassi, Marco, Lodola, Luca, Malcovati, Piero, Manghisoni, Massimo, Morsani, Fabio, Paladino, Antonio, Pancheri, Lucio, Paoloni, Eugenio, Ratti, Lodovico, Re, Valerio, Rizzo, Giuliana, Traversi, Gianluca, Vacchi, Carla, Verzellesi, G.   +21 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Optimal pilot symbol power allocation under time-variant channels [PDF]

EURASIP Journal on Wireless Communications and Networking, 2012
Abstract Nowadays, most wireless communication systems employ coherent demodulation on the receiver side. Under this circumstance, part of the available transmission resource is reserved and utilized for channel estimation, referred to as pilot symbols.
Šimko, Michal, Wang, Qi, Rupp, Markus
openaire   +1 more source

MIMO indoor propagation : a geometry-based model including time-variant fading statistics [PDF]

, 2016
P
Joseph, Wout, Oestges, Claude, Vinogradov, Evgenii   +2 more
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source