Abstract: This paper proposes a hybrid beamforming framework for massive multiple-input multiple-output (MIMO) in near-space airship-borne communications. To achieve high energy efficiency (EE) in ...
All the Latest Game Footage and Images from University of Problems Student life is perhaps the most vivid, colorful, and memorable period of life for many of us. You start your adult life, feel ...
Abstract: To address the complexities of spatial non-stationary (SnS) effects and spherical wave propagation in near-field channel estimation (CE) for extremely large-scale multiple-input ...
What are the most pressing global crises in 2026? Each year, the International Rescue Committee’s (IRC) Emergency Watchlist identifies the countries at greatest risk of new or worsening humanitarian ...
Five years ago, mathematicians Dawei Chen and Quentin Gendron were trying to untangle a difficult area of algebraic geometry involving differentials, elements of calculus used to measure distance ...
Microsoft’s MSFT-2.58%decrease; red down pointing triangle Copilot chatbot has become central to its artificial-intelligence strategy as the company’s close partnership with OpenAI diminishes. But the ...
iPhones As a former phone engineer, I have some serious concerns about Apple potentially introducing variable apertures into the iPhone 18 Pro macOS macOS Tahoe 26.4 public beta is here — and these ...
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