Results 91 to 100 of about 2,974,123 (288)

Avidin is evolutionarily conserved in fish but dispensable for development and resistance against Streptococcus agalactiae in zebrafish

FEBS Open Bio, EarlyView.
The presence of biotin‐binding avidin proteins in fish and their biological significance are poorly characterized. We cataloged fish avidins and demonstrate that they are widely present and evolutionarily conserved. We created avd knockout zebrafish and show that zebavidin is dispensable for development and that resistance of avd knockout embryos in ...
Anni K. Saralahti, Markus J. T. Ojanen, Mataleena Parikka, Otto Kauko, Mika Rämet, Vesa P. Hytönen   +5 more
wiley   +1 more source

Performance evaluation of channel estimation techniques for a mobile fourth generation wide area OFDM system [PDF]

, 2002
In this paper channel estimation techniques for a mobile fourth generation coherent orthogonal frequency division multiplexing (OFDM) system are proposed. Coherent detection dictates that a per-subband estimate of the frequency response of the channel is
Nix, AR, Alex Dowler, Andrew Nix, Angela Doufexi, Dowler, ASH, Doufexi, A   +5 more
core   +1 more source

A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer

Dianxin kexue, 2015
In the physical layer security,that inhibiting the accuracy of channel estimation at eavesdropper can indirectly enhance the received signal quality difference between the legitimate receiver and the eavesdropper,thus improving signal transmission ...
Rong Zhang, Xianzhong Xie, Weijia Lei
doaj   +2 more sources

Beta1 subunits enable fentanyl‐induced BK channel activation and opioid regulation of cerebral artery diameter

FEBS Open Bio, EarlyView.
During the current opioid crisis, the majority of overdose deaths are attributed to ultra‐potent synthetic opioids, such as fentanyl. While fentanyl exerts its action via opioid receptors, we propose that potassium channels in the brain blood vessels may also sense fentanyl.
Shiwani Thapa, Mohammed Nooh, Akhil Geddati, Alex Dopico, Anna N. Bukiya   +4 more
wiley   +1 more source

Semi-blind iterative joint channel estimation and K-best sphere decoding for MIMO

, 2013
An efficient and high-performance semi-blind scheme is proposed for Multiple-Input Multiple-Output (MIMO) systems by iteratively combining channel estimation with K-Best Sphere Decoding (SD).
Messier, G.G., Chen, Sheng, Magierowski, S., Dey, Indrakshi   +3 more
core   +2 more sources

Characterization of the key membrane protein cytochrome Cyc2 from Ghiorsea bivora

FEBS Open Bio, EarlyView.
This study reports the first detailed biochemical analysis of Cyc2TAG1_1, a cytochrome protein involved in microbial iron oxidation. We produced and purified this enzyme in E. coli, then measured its iron‐oxidizing efficiency, and characterized its electrical and structural properties.
Josiane Azizi, Alain Dolla, Frauke Baymann, Celine Rommevaux, Latifa Elantak, Helene Gaussier, Matthieu Nouailler   +6 more
wiley   +1 more source

Blind Channel Estimation Using Redundant Precoding: New Algorithms, Analysis, and Theory [PDF]

, 2008
Digital signal processing (DSP) techniques have played an important role in channel equalization and estimation in communication systems. While channel equalization and estimation are usually done by pilot-assisted methods in most systems, algorithms for
Su, Borching
core   +1 more source

Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA

, 2005
The performance of a decision-directed channel estimation scheme is analyzed in the context of both OFDM and MC-CDMA systems. A difficulty associated with the employment of the Least Squares (LS) approach to the problem of a posteriori channel estimation
Akhtman, J., Hanzo, L.
core   +1 more source

Deep Learning-Based Channel Estimation With 1D CNN for OFDM Systems Under High-Speed Railway Environments

IEEE Access
In OFDM wireless communications, channel estimation performance is compromised in high-speed railway environments owing to extremely fast multipath fading and severe Doppler effect.
Aphitchaya Siriwanitpong, Kosuke Sanada, Hiroyuki Hatano, Kazuo Mori, Pisit Boonsrimuang   +4 more
doaj   +1 more source

A Robust Sparse Adaptive Filtering Algorithm with a Correntropy Induced Metric Constraint for Broadband Multi-Path Channel Estimation

Entropy, 2016
A robust sparse least-mean mixture-norm (LMMN) algorithm is proposed, and its performance is appraised in the context of estimating a broadband multi-path wireless channel.
Yingsong Li, Zhan Jin, Yanyan Wang, Rui Yang   +3 more
doaj   +1 more source