Abstract: At millimeter-wave (mm-wave) frequencies, narrow beamwidth and inaccurate channel estimation result in beam alignment errors, which degrade the achievable signal-to-noise ratio (SNR) and ...

Reconfigurable intelligent surfaces (RISs) and massive multiple-input multiple-output (massive-MIMO) systems are promising technologies for improving the energy efficiency of millimeter-wave (mmWave) ...

Learn how to safely and efficiently remove an excavator stick cylinder with this detailed step-by-step tutorial. We cover proper safety prep, pin and hose removal, cylinder extraction techniques, and ...

Tattoo ink doesn’t just sit inertly in the skin. New research shows it moves rapidly into the lymphatic system, where it can persist for months, kill immune cells, and even disrupt how the body ...

The number of troops in the city is expected to grow. But Army officials appear to be trying to keep them on the sidelines of President Trump’s mission. The number of troops in the city is expected to ...

In space, no one can hear you scream... but they can hear you eat celery? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. I Just Found Out Lily ...

Elvis Shida is a Tech/Hardware Writer from Kenya. He has been building PCs for a decade and is keenly interested in motherboards, monitors, and gaming TVs. When not building PCs or writing about ...

Auston Matthews delivered the goal that saved the Toronto Maple Leafs’ season on Friday night, but his ability to do so was briefly in question midway through Game 6 against the Florida Panthers. The ...

Electron-beam inspection is proving to be indispensable for finding critical defects at sub-5nm dimensions. The challenge now is how to speed up the process to make it economically palatable to fabs.

Despite mounting political and economic strain between the U.S. and China, many American companies remain reluctant to scale back their operations in the world's second-largest economy. What To Know: ...