Abstract: Cognitive satellite terrestrial networks have received considerable attention as a promising candidate to address the spectrum scarcity problem in future wireless communications. When ...

The US will now use the laser to simulate the extreme physical conditions that nuclear weapons face.

China blasts laser 80,778 miles to the Moon and back in a daylight world-first DSEL compares the feat to hitting a single hair from 6.2 miles (10 km) away Updated: May 01, 2025 08:19 AM EST ...

Abstract: In this paper, we consider a hybrid satellite-terrestrial network (HSTN) where a multiantenna satellite communicates with a ground user equipment (UE) with the help of multiple cache-enabled ...