Tzveta Iordanova is an expert in credit and risk management, financial reporting, and a writer for online financial services platforms. Andy Smith is a Certified Financial Planner (CFP®), licensed ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

Abstract: In high-mobility environments, rapid channel variations and intercarrier interference (ICI) hinder the performance of orthogonal frequency division multiplexing (OFDM). Delay-Doppler-based ...

Abstract: Navigation with radio-signals using GNSS or a terrestrial positioning system in urban environments is susceptible to multipath propagation, which can severely degrade positioning accuracy.

Jan. 15, 2026 Pancreatic cancer uses a sugar-coated disguise to evade the immune system, helping explain why it’s so hard to treat. Northwestern scientists discovered this hidden mechanism and created ...