Results 11 to 20 of about 2,034,856 (66)
Channel Estimation for Extremely Large-Scale MIMO: Far-Field or Near-Field? [PDF]
IEEE Transactions on Communications, 2021 Extremely large-scale multiple-input-multiple-output (XL-MIMO) is promising to meet the high rate requirements for future 6G. To realize efficient precoding, accurate channel state information is essential. Existing channel estimation algorithms with low
Mingyao Cui, L. Dai
semanticscholar +1 more source
6G Wireless Communications: From Far-Field Beam Steering to Near-Field Beam Focusing [PDF]
IEEE Communications Magazine, 2022 6G networks will be required to support higher data rates, improved energy efficiency, lower latency, and more diverse users compared with 5G systems. To meet these requirements, electrically extremely large-scale antenna arrays are envisioned to be key ...
Haiyang Zhang +4 more
semanticscholar +1 more source
Far-field super-resolution ghost imaging with a deep neural network constraint
Light: Science & Applications, 2022 Ghost imaging (GI) facilitates image acquisition under low-light conditions by single-pixel measurements and thus has great potential in applications in various fields ranging from biomedical imaging to remote sensing.
Fei Wang +6 more
semanticscholar +1 more source
British Journal of Political Science, 2023 With a proliferation of scholarly work focusing on populist, far-left, and far-right parties, questions have arisen about the correct ways to ideologically classify such parties.
Matthijs Rooduijn +7 more
semanticscholar +1 more source
COVID-19 pandemic: A review of the global lockdown and its far-reaching effects
Science in progress, 2021 COVID-19, caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), was declared a pandemic by the World Health Organization (WHO) on the 11th of March 2020, leading to some form of lockdown across almost all countries of the world. The
Helen Onyeaka +4 more
semanticscholar +1 more source
Channel Estimation for Extremely Large-Scale Massive MIMO: Far-Field, Near-Field, or Hybrid-Field? [PDF]
IEEE Communications Letters, 2021 Extremely large-scale massive MIMO (XL-MIMO) is a promising technique for future 6G communications. However, existing far-field or near-field channel model mismatches the hybrid-field channel feature in the practical XL-MIMO system.
Xiuhong Wei, L. Dai
semanticscholar +1 more source
Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses
Scientific Reports, 2020 A direct approach to limit airborne viral transmissions is to inactivate them within a short time of their production. Germicidal ultraviolet light, typically at 254 nm, is effective in this context but, used directly, can be a health hazard to skin and ...
M. Buonanno +3 more
semanticscholar +1 more source
NEW RECORDS OF SPIDERS (ARACHNIDA: ARANEI) FROM THE RUSSIAN FAR EAST AND SIBERIA
Far Eastern entomologistA list of 13 spider species collected in Siberia and the Russian Far East is provided, оf those eight species are new for Russian fauna. Erigonoplus foveatus (Dahl) is recorded from Siberia for the first time. The linyphiid spider Erigonoplus globipes (L.
L. Trilikauskas
semanticscholar +1 more source
The great replacement: Strategic mainstreaming of far-right conspiracy claims
Convergence: The International Journal of Research into New Media Technologies, 2022 This paper assesses how the ‘Great Replacement’ conspiracy theory (the idea that ethnically homogeneous populations in European nations are being ‘replaced’ by people of non-European origin) is articulated online by three different actors.
Mattias Ekman
semanticscholar +1 more source
Far UV-C radiation: An emerging tool for pandemic control
Critical reviews in environmental science and technology, 2022 Far UV-C, informally defined as electromagnetic radiation with wavelengths between 200 and 230 nm, has characteristics that are well-suited to control of airborne pathogens. Specifically, Far UV-C has been shown to be highly effective for inactivation of
E. R. Blatchley +10 more
semanticscholar +1 more source