Results 61 to 70 of about 21,375,361 (347)
The new class of FR0 radio galaxies [PDF]
, 2015 Are the FRI and FRII radio galaxies representative of the radio-loud (RL) AGN population in the local Universe? Recent studies on the local low-luminosity radio sources cast lights on an emerging population of compact radio galaxies which lack extended ...
Allen +33 more
core +2 more sources
Throughput and Capacity Evaluation of 5G New Radio Non-Terrestrial Networks with LEO Satellites [PDF]
Global Communications Conference, 2020 A non-terrestrial network (NTN), a term coined by the 3rd Generation Partnership Project (3GPP), refers to a network utilizing airborne or spaceborne payload for communication.
Jonas Sedin, Luca Feltrin, Xingqin Lin
semanticscholar +1 more source
The coexistence of cognitive radio and radio astronomy [PDF]
, 2009 An increase of the efficiency of spectrum usage requires the development of new communication techniques. Cognitive radio may be one of those new technique, which uses unoccupied frequency bands for communications.
Baan, W.A., Bentum, M.J., Boonstra, A.J.
core +1 more source
, 2019 Since the days of Hertz, radio transmitters have evolved from rudimentary circuits emitting around 50 MHz to modern ubiquitous Wi-Fi devices operating at gigahertz radio bands.
Belyanin, Alexey +10 more
core +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Dual-Band Power Amplifier Design at 28/38 GHz for 5G New Radio Applications
IEEE Access, 2022 This paper presents the design of a dual-band power amplifier (PA) featuring similar performance at 28 GHz and 38 GHz. In the new radio (NR) of the fifth generation (5G) communication system, the inter-band carrier aggregation technique is commonly ...
Yi-Fan Tsao +3 more
doaj +1 more source
Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley +1 more source
Carrier Frequency Offset Estimation in 5G NR: Introducing Gradient Boosting Machines
IEEE Access, 2023 The Beyond fifth Generation (B5G) communication systems imposed several challenges on radio designers. For example, a machine is required to set up a call at a low Signal-to-Noise Ratio (SNR), as low as −10 dB, in the extended coverage mode ...
Mostafa Hussien +6 more
doaj +1 more source
The low-frequency radio catalog of flat spectrum sources
, 2014 A well known property of the gamma-ray sources detected by COS-B in the 1970s, by the Compton Gamma-ray Observatory in the 1990s and recently by the Fermi observations is the presence of radio counterparts, in particular for those associated to ...
, +13 more
core +2 more sources
On the Spectral Index of Distant Radio Galaxies [PDF]
, 2009 The problems of using the spectral index of radio galaxies in various tests, in particular, in selecting distant radio sources are considered. The history of the question of choosing a criterion of searching for distant radio galaxies based on the ...
A. G. Gorshkov +43 more
core +1 more source