Master the concepts of average velocity and position update in this physics tutorial. Learn step-by-step how to calculate motion, update positions over time, and solve related problems with clarity.

Abstract: Pulse position modulation (PPM) is a popular signal modulation technique which converts signals into M-ary data by means of the position of a pulse within a time interval. While PPM and its ...

We propose a terahertz continuous-variable quantum key distribution protocol using pulse position modulation, which enables simultaneous quantum and classical communication for inter-satellite links.

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Abstract: Pulse Position Modulation (PPM) is widely used in optical wireless communication systems because of its higher power efficiency and minimal inter-symbol ...

Iraqi protesters stepped up their demonstrations Tuesday with the authorities in Baghdad increasingly paralysed as they seek a way out of a political impasse. Once again the capital's iconic Tahrir ...