Abstract: A four-dimensional (4D) geometrically-shaped constellation with low-density paritycheck codes is investigated to analyse the sensitivity improvements from 4D geometric shaping. Numerical ...

Space telescopes are typically optimized either to study a small patch of the sky across many wavelengths of light or to ...

Abstract: The operational scenarios in airspace are becoming increasingly diverse and complex. Facilitating four-dimensional trajectory operations stands out as a prominent trend in the ongoing ...

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In 1919, physicist Theodor Kaluza hypothesized that extra dimensions might solve some outstanding problems in physics. And while we haven't found any evidence yet for anything outside our normal ...