Ultrashort pulses play a significant role in spectroscopic applications. Their broad spectral bandwidth enables simultaneous characterization of the sample at various frequencies, eliminating the need ...

As an engineer at Bell Laboratories, Harry Nyquist did important work on thermal noise (“Johnson–Nyquist noise”), the stability of feedback amplifiers, telegraphy, facsimile, television, and other ...

Faster-Than-Nyquist (FTN) signalling is a spectral-efficiency paradigm in which binary or higher-order symbols are transmitted at intervals shorter than the classical Nyquist criterion. By ...