Results 31 to 40 of about 832,585 (295)
Shaped dipole arrays with maximum gain
Electronics Letters, 1994 A new type of array with different-shaped dipoles is analysed and synthesised by the moment method and functional optimisation. The effects of wire radius on optimum structure and maximum gain are considered. The current distributions and the radiation patterns of the arrays are given.
J.H. Wang, L. Jen
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Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]
, 2016 In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco +7 more
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IEEE Photonics Journal, 2020 We experimentally demonstrate the transmission performance of the bit-loading discrete multi-tone (DMT) signal in intensity modulation and direct detection (IM-DD) system with a transmission distance of 2km and a net data rate of 108-Gb/s by two ...
Junjie Ding, Jiao Zhang, Jianjun Yu
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Arc-shaped solitons on a gain-loss ring
Optics Express, 2019 We address the properties of arc-shaped solitons supported by defocusing nonlinearity on a partially-parity-time symmetric ring, including the existence and stability. Four types of arc-shaped solitons are found. The existence region of arc-shaped solitons with two or more bright spots is the same, while it is slightly smaller in value than that of ...
Changming Huang +2 more
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Combining Probabilistic Shaping and Nonlinear Mitigation: Potential Gains and Challenges [PDF]
Optical Fiber Communication Conference, 2018 We experimentally compare different options for transmission at 200G net bit-rate and demonstrate that the benefits of probabilistic shaping and nonlinear mitigation via SRO and/or DBP can be effectively combined to enable propagation reach enhancement of >40%.
Guiomar F. P. +5 more
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New Reflector Shaping Methods for Dual-Reflector Antenna [PDF]
Radioengineering, 2022 In the fifth-generation (5G) mobile system, new millimeter-wave technologies such as small cell size and multibeam operation are introduced at the base station.
K. Quzwain +4 more
doaj
Beam shaping in the high-energy kW-class laser system Bivoj at the HiLASE facility
High Power Laser Science and Engineering, 2023 A fully automatic fail-safe beam shaping system based on a liquid crystal on a silicon spatial light modulator has been implemented in the high-energy kilowatt-average-power nanosecond laser system Bivoj.
Tomáš Paliesek +5 more
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Robust H∞ Loop Shaping Controller Synthesis for SISO Systems by Complex Modular Functions
Mathematical and Computational Applications, 2021 In this paper, a loop shaping controller design methodology for single input and a single output (SISO) system is proposed. The theoretical background for this approach is based on complex elliptic functions which allow a flexible design of a SISO ...
Ahmad Taher Azar +2 more
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Asymptotic shaping gains from non-Gaussian distributions
Electronics Letters, 1993 Optimum shaping gains are achieved when constellation symbols are sent in accordance with a Gaussian probability distribution. The Letter shows that the distribution can deviate from Gaussian and still give very good gains. It also gives asymptotic gains for two simple distributions.
E. Deliot, D.J. Tait, R.G.C. Williams
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Trends in Hearing, 2021 Hearing aids are typically fitted using speech-based prescriptive formulae to make speech more intelligible. Individual preferences may vary from these prescriptions and may also vary with signal type.
Jonathan M. Vaisberg +4 more
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