Results 61 to 70 of about 213,281 (332)

Direction of arrival estimation using robust complex Lasso

, 2016
The Lasso (Least Absolute Shrinkage and Selection Operator) has been a popular technique for simultaneous linear regression estimation and variable selection.
Ollila, Esa
core   +1 more source

Modelling Aspects of Planar Multi-Mode Antennas for Direction-of-Arrival Estimation [PDF]

, 2019
Multi-mode antennas are an alternative to classical antenna arrays, and hence a promising emerging sensor technology for a vast variety of applications in the areas of array signal processing and digital communications. An unsolved problem is to describe
Almasri, Sami Alkubti, Dammann, Armin, Doose, Niklas, Hoeher, Peter A., Pöhlmann, Robert   +4 more
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Noncircular coherent signal direction of arrival estimation for coprime array: A subspace‐based interpolation approach

IET Radar, Sonar & Navigation
To address the array aperture loss caused by mainstream direction of arrival (DOA) estimation algorithms for coherent signals using matrix interpolation techniques, a non‐circular (NC) coherent signal direction‐finding method that fully utilises ...
Zihan Shen, Hao Hu, Jiaqi Li, Xiaofei Zhang   +3 more
doaj   +1 more source

Multiple Parameter Estimation With Quantized Channel Output

, 2010
We present a general problem formulation for optimal parameter estimation based on quantized observations, with application to antenna array communication and processing (channel estimation, time-of-arrival (TOA) and direction-of-arrival (DOA) estimation)
Antreich, Felix, Mezghani, Amine, Nossek, Josef A.   +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

Direction of Arrival Estimation with Sparse Subarrays

CoRR
15 pages, 8 ...
Wesley S. Leite, Rodrigo C. de Lamare, Yuriy V. Zakharov, Wei Liu 0001, Martin Haardt   +4 more
openaire   +2 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

An enhanced expanding and shift sparse array based on the coprime array and nested array

IET Radar, Sonar & Navigation
In recent years, sparse arrays based on the fourth‐order difference coarray (FODCA) have received increased research attention due to their small number of array elements and large consecutive virtual arrays.
Caihui Qin, Ling Yang, Jingxin Dang, Bo Dang, Yan Zhou   +4 more
doaj   +1 more source

Power-Based Direction-of-Arrival Estimation Using a Single Multi-Mode Antenna

, 2017
Phased antenna arrays are widely used for direction-of-arrival (DoA) estimation. For low-cost applications, signal power or received signal strength indicator (RSSI) based approaches can be an alternative. However, they usually require multiple antennas,
Dammann, Armin, Jost, Thomas, Pöhlmann, Robert, Zhang, Siwei   +3 more
core   +1 more source