Results 41 to 50 of about 18,513 (303)

High Resolution Direction-of-Arrival Estimation Using Genetic Algorithm [PDF]

Engineering and Technology Journal, 2009
This paper presents an application of a performance analysis of a genetic algorithm GA developed for extraction of the directions of arrival DOA of several signals impinging on uniform linear arrays.
Eyad I. Abbas, Ali Abdul-Elah Noori
doaj   +1 more source

Spatially localized direction of arrival estimation

Proceedings : European Conference on Noise Control, 2018
Direction-of-arrival (DOA) estimation is a fundamental area of research in the field of array processing, as it applies in a variety of areas, including: sound field analysis, spatial sound reproduction and spatial filtering. There exists a plethora of DOA estimating algorithms, which all vary in terms of accuracy and computational complexity.
Delikaris-Manias, Symeon, McCormack, Leo, Pavlidi, Despoina, Mouchtaris, Athanasios   +3 more
openaire   +3 more sources

Controlling AoA Estimation Errors in Rician Fading via Measurement Quality Classification

IEEE Access
Angle of Arrival (AoA) estimation plays a crucial role in modern positioning systems but is often affected by errors in multipath channels. Existing methods typically lack a direct mechanism to assess the quality of the estimates, while full channel ...
Pedro Lemos, Glauber Brante, Ohara Kerusauskas Rayel, Richard Demo Souza   +3 more
doaj   +1 more source

Direction of arrival estimation using nonsingular spherical ESPRIT [PDF]

The Journal of the Acoustical Society of America, 2018
The eigenbeam-ESPRIT (EB-ESPRIT) is a parametric method that estimates the direction of arrival of source signals using a recurrence relation of spherical harmonics. In EB-ESPRIT, the sound-source elevation angle is estimated from an arctangent function, which diverges near the equator in the spherical coordinate system and inevitably induces an ill ...
Byeongho, Jo, Jung-Woo, Choi
openaire   +2 more sources

Adaptive Measurement Matrix Design in Direction of Arrival Estimation

IEEE Transactions on Signal Processing, 2022
Advances in compressed sensing (CS) theory have brought new perspectives to encoding and decoding of signals with sparse representations. The encoding strategies are determined by measurement matrices whose design is a critical aspect of the CS applications.
Berkan Kilic, Alper Gungor, Mert Kalfa, Orhan Arkan   +3 more
openaire   +4 more sources

Direction of arrival estimation for BLE: Antenna array design and evaluation

AEU - International Journal of Electronics and Communications, 2023
The use of smart antenna arrays in wireless communication systems is becoming increasingly popular, as they improve the performance of the radio link and allow the integration of communication and sensing functions. In this paper, we present the design and performance evaluation of a uniform circular antenna array (UCAA) with 12 monopole antennas and ...
Aleš Simončič, Tomaž Javornik, Aleksander Sešek, Andrej Hrovat   +3 more
openaire   +1 more source

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

Direction-of-Arrival Estimation via Coarray With Model Errors

IEEE Access, 2018
Direction-of-Arrival (DoA) estimation with Coarray can resolve O(N2) sources via only O(N) physical sensor elements. When it comes to model errors, i.e., manual coupling, gain and/or phase errors, and sensor location errors, whether Coarray is still ...
Rui Lu, Ming Zhang, Xiaobo Liu, Xiaoming Chen, Anxue Zhang   +4 more
doaj   +1 more source

Direction of arrival estimation for nanoscale sensor networks [PDF]

Proceedings of the 5th ACM International Conference on Nanoscale Computing and Communication, 2018
Nanoscale wireless sensor networks (NWSNs) could be within reach soon using graphene-based antennas, which resonate in 0.1-10 terahertz band. To conserve the limited energy available at nanoscale, it is expected that NWSNs will communicate using extremely short pulses on the order of femtoseconds.
Prasad, Shree M., Panigrahi, Trilochan, Hassan, Mahbub   +2 more
openaire   +2 more sources

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