Results 81 to 90 of about 1,805,271 (277)
Sub-Nyquist Wideband Spectrum Sensing and Sharing [PDF]
, 2017 PhDThe rising popularity of wireless services resulting in spectrum shortage has motivated dynamic spectrum sharing to facilitate e cient usage of the underutilized spectrum.
Ma, Yuan
core
A Family of Sodium Solid‐State Electrolytes Based on the NaGaxAl1‐xCl4 Solid Solution
Advanced Materials Interfaces, EarlyView.ABSTRACT Sodium‐based metal chloride solid electrolytes are promising for sodium solid‐state batteries due to their excellent oxidation stability, which, as shown for Li halides, can coexist with high ionic conductivity. To explore cationic substitution effects, we synthesized NaGaxAl1‐xCl4 (0 ≤ x ≤ 1) via ball milling and investigated structural and ...
Hao Guo, Matteo Bianchini
wiley +1 more source
IEEE Access, 2019 Sub-Nyquist pulse Doppler radar system has received wide attention recently because it can make the sampling rate lower than the Nyquist sampling rate. However, there are still two problems that must be addressed for sub-Nyquist pulse Doppler radar.
Beiyi Liu +4 more
doaj +1 more source
Gas‐Selective Remote Plasma Engineering of WO3 Photoanodes for Solar Water Splitting
Advanced Materials Interfaces, EarlyView.Gas‐selective remote plasma treatment tunes the near‐surface defect chemistry of WO3 photoanodes without altering their bulk structure. Ar plasma generates the most oxygen‐vacancy‐rich surface and the highest W5+ content, delivering the strongest photocurrent.
Elham Jassemi Zargani +5 more
wiley +1 more source
Caracterização de sinais Sub-Nyquist com modulação analógica, com base na distribuição de valores singulares [PDF]
, 2017 he work evidences the probability distributions that present the singular values, obtained from the autocorrelation matrix of the continuous signal samples, acquired with Sub-Nyquist random demodulator sampling.
Astaiza Hoyos, Evelio +1 more
core +1 more source
Xenes for Sustainable Energy: A Roadmap From First‐Principles Design to Practical Deployment
Advanced Materials Interfaces, EarlyView.Emerging 2D Xenes are advancing from theoretical predictions toward practical energy‐storage and conversion technologies through the integration of first‐principles modelling, experimental synthesis, electrochemical validation, and AI‐assisted materials design, enabling accelerated discovery of high‐performance and sustainable electrochemical systems ...
Onur Karaman, Ceren Karaman
wiley +1 more source
Sub-Nyquist Cyclostationary Detection of GFDM for Wideband Spectrum Sensing
IEEE Access, 2019 Spectrum scarcity is a challenging problem in wireless communications: high data rates are needed to support 5G new technologies. However, the spectrum is underutilized.
Noura A. El-Alfi +2 more
doaj +1 more source
A signal reconstruction method of wireless sensor network based on compressed sensing
EURASIP Journal on Wireless Communications and Networking, 2020 Compressed sensing (CS) is a new theory for sampling and recovering signal-based sparse transformation. This theory could help us to acquire complete signal at low cost.
Shiyu Zhu +4 more
doaj +1 more source
F-region electron density and Te / Ti measurements using incoherent scatter power data collected at ALTAIR [PDF]
Annales Geophysicae, 2006 The ALTAIR UHF radar was used in an incoherent scatter experiment to observe the low-latitude ionosphere during the Equis 2 rocket campaign. The measurements provided the first high-resolution electron density maps of the low-latitude D- and E ...
M. Milla, E. Kudeki
doaj +1 more source
Sub-Nyquist collocated MIMO radar in time and space [PDF]
2016 IEEE Radar Conference (RadarConf), 2016 Multiple input multiple output (MIMO) radar exhibits several advantages with respect to traditional monostatic radar by exploiting transmit waveform diversity. Achieving high resolution requires a large number of transmit and receive antennas. In addition, the digital processing is performed on samples of the received signal at its Nyquist rate, which ...
Cohen, David +3 more
openaire +2 more sources