Results 1 to 10 of about 50,018 (265)
Phase Distortion by Linear Signal Transforms [PDF]
Frontiers in Applied Mathematics and Statistics, 2020 In this study, we are concerned with the effect of certain linear transformations of a signal f on its phase. We are, in particular, interested in phase distortions caused by band-limiting operations. The band-limiting operators serve as a motivation for
Frank Filbir, Frank Filbir, Lukas Liehr
doaj +5 more sources
Future Internet, 2023 Because of rain attenuation, the equivalent baseband transfer function of large bandwidth radio-links will not be ideal. We report the results concerning radio links to/from satellites orbiting in GeoSurf satellite constellations located at Spino d’Adda,
Emilio Matricciani, Carlo Riva
doaj +1 more source
Telecom, 2023 We have studied the interference caused by amplitude and phase distortions induced by rain in ultra-wideband communication systems designed for using amplitude modulation in GeoSurf future satellite constellations.
Emilio Matricciani +2 more
doaj +1 more source
High-Frequency Power Amplitude Modulators with Class-E Tuned Amplifiers
Journal of Telecommunications and Information Technology, 2023 A high-frequency power amplifier used in a drain amplitude modulator must have linear dependence of output HF voltage Vo versus its supply voltage VDD. This condition essential for obtaining low-level envelope distortions is met by a theoretical class-E
Juliusz Modzelewski +1 more
doaj +1 more source
Enhanced Yb:YAG Active Mirrors for High Power Laser Amplifiers
Photonics, 2023 The work is aimed at the investigation of the influence of nonlinear active ions concentration profiles in Yb:YAG laser elements on temperature distribution and wavefront distortions during amplification using sub-kilowatt level diode pumping.
Vladimir A. Petrov +5 more
doaj +1 more source
Blind Compensation of Linear Amplitude Distortions [PDF]
IEEE Transactions on Broadcasting, 2008 The estimation and the compensation of particular amplitude distortions, typically affecting the consumer-grade receivers in broadband satellite communications, are considered. The distortion filter is modeled as a linear function of the frequency with unknown slope.
Dario Fertonani +3 more
openaire +2 more sources
Random distortion testing with linear measurements [PDF]
Signal Processing, 2018 Abstract This paper addresses the problem of testing whether, after linear transformations and possible dimensionality reductions, a random matrix of interest Θ deviates significantly from some matrix model θ0, when Θ is observed in additive independent Gaussian noise with known covariance matrix.
Pastor, Dominique +1 more
openaire +3 more sources
Digital Predistortion in High Throughput Satellites: Architectures and Performance
IEEE Access, 2021 The future of satellites lies in the deployment of high throughput satellites (HTS). Moreover, HTS will also play an important role in the up coming 5G mobile networks where HTS will provide services like disaster relief, remote automation, maritime ...
Ovais Bin Usman, Andreas Knopp
doaj +1 more source
Linear machinery for morphological distortion [PDF]
Computers and Biomedical Research, 1978 Abstract In 1917 D'Arcy Thompson reduced the problem of comparing two homologous shapes to the construction and depiction of a mathematical distortion in the plane. Attempts at algorithms for this computation, found mostly in the biological literature, ignore the primacy of the boundary correspondence within the data.
openaire +3 more sources
Distortion Contribution Analysis With the Best Linear Approximation [PDF]
IEEE Transactions on Circuits and Systems I: Regular Papers, 2018 Preprint of the paper submitted to the IEEE transactions on Circuits and Systems - I: Regular ...
Adam Cooman +4 more
openaire +3 more sources