Getting good at LeetCode Java can feel like a puzzle sometimes, right? You see all these problems, and you’re not sure where ...

Abstract: For a large-scale array, the subarray technology can save the radio frequency (RF) channels. However, the use of subarray technology often tends to reduce the beamforming performance of the ...

Abstract: In this paper, we study the downlink precoding of spatial non-stationary (SnS) extremely large-scale multiple-input multiple-output (XL-MIMO) in the near-field channel with uniform spherical ...

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Vertical ridges in nails are usually harmless and may become more noticeable with age. Sudden or worsening ridges should be checked by a healthcare provider. Some ridges can be linked to medical ...