A generalized multiport network analyzer implemented using commercially available hardware is presented. Measurement calibration is accomplished through a novel calibration procedure which requires only conventional standards used for two-port calibrations, The calibration theory accounts for the errors due to the signal switching network but does not systematically remove errors due to signal ...

There are many modulation methods suitable for optical wireless communication. OOK, PPM are adopted widely in optical wireless communication for its high average-power-efficiency. DPPM, DPIM and DH-PIM are three new modulation methods for optical wireless communication, which may be the substitutes of PPM because of their better performance in power efficiency and bandwidth efficiency. In this ...

Context. JAXA’s Hayabusa2 mission rendezvoused the Ryugu asteroid for 1.5 years to clarify carbonaceous asteroids’ record Solar System origin and evolution. Aims. We studied photometric behavior of spectral parameters characterizing near-infrared (NIR) spectra provided by Hayabusa2/NIRS3 instrument, that is say 1.9 µm reflectance, 2.7 2.8 band depths (ascribed phyllosilicates), NIR slope. Metho...

A spectral approach is proposed for voice source parameters representation and estimation. Parameter estimation is based on decomposition of the periodic and the aperiodic components of the speech signal, and on spectral modelling of the periodic component. The paper focusses on parameters estimation for the periodic component of the glottal ow. A new anticausal all-pole model of the glottal ow...