Abstract: In this paper we compare two candidate multiple access schemes for visible light communications (VLC), namely, optical orthogonal frequency division multiplexing interleave division multiple ...

Abstract: This paper analyzes the performance of an uplink/downlink reconfigurable intelligent surface (RIS)-based wireless system with a multiple-antenna base station (B), where the RIS selection ...

A preliminary budget request from President Donald Trump takes aim at a satellite program with a 50-year history whose data is housed just northeast of Sioux Falls, at a facility employing hundreds of ...

As of May 2025, there are roughly 11,700 active satellites in orbit around Earth, a majority of which are located in low-Earth orbit (LEO) — below 1,200 miles (2,000 kilometers) above our planet ...

Amazon is planning to launch Project Kuiper, its satellite internet services in India. The service will be similar to Elon Musk's Starlink and Amazon has approached the Department of ...

Latest satellite imagery shows that the United States aircraft carrier USS Nimitz continues to operate in the South China Sea, where China's sovereignty claims cover most of the waters.

WASHINGTON — As military operations increasingly depend on rapid and resilient communications across multiple domains, satellite operators are racing to provide not just bandwidth, but smarter ...

The Satellite Control Network provides critical support to government spacecraft, but its antennas are outdated and the system is overutilized due to growing demand. (Serco) The Space Force this ...

Listen to Story PSLV is India’s most reliable and versatile launch vehicle PSLV has completed over 60 missions PSLV-C61 configuration is tailored for this heavy payload India is gearing up for the big ...

China has completed key technology checks for an experimental satellite in very low Earth orbit (VLEO), marking an initial step towards building a 300-satellite constellation for high-resolution ...

MCLEAN, Va.--(BUSINESS WIRE)--Intelsat and Cubic³ have successfully completed a critical vehicle satellite connectivity test, marking a significant milestone in their joint mission to create a ...

But satellite imagery indicates that while the attacks were widespread, the damage was far more contained than claimed — and appeared mostly inflicted by India on Pakistani facilities.