Results 31 to 40 of about 364,659 (283)
High-speed braking properties of Cu-based powder metallurgy brake pads
Fenmo yejin jishu, 2023 Friction coefficients of the Cu-based powder metallurgical brake pads decline due to the high temperature during the high-speed braking, which will directly affect the train braking effectiveness.
LIU Sihan +8 more
doaj +1 more source
On Peak versus Average Interference Power Constraints for Protecting Primary Users in Cognitive Radio Networks [PDF]
, 2008 This paper considers spectrum sharing for wireless communication between a cognitive radio (CR) link and a primary radio (PR) link. It is assumed that the CR protects the PR transmission by applying the so-called interference-temperature constraint ...
Zhang, Rui
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Nanomaterials, 2022 This work examined the thermoluminescence dosimetry characteristics of Ag-doped ZnO thin films. The hydrothermal method was employed to synthesize Ag-doped ZnO thin films with variant molarity of Ag (0, 0.5, 1.0, 3.0, and 5.0 mol%).
Hammam Abdurabu Thabit +5 more
doaj +1 more source
Sensors, 2021 The use of unmanned aerial vehicles (UAV) to provide services such as the Internet, goods delivery, and air taxis has become a reality in recent years.
Deyvid L. Leite +4 more
doaj +1 more source
The κ-µ Shadowed Fading Model with Integer Fading Parameters [PDF]
, 2017 (c) 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or ...
Lopez-Martinez, F. Javier +2 more
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A commercial radio receiver for lower ionosphere monitoring: Initial results [PDF]
Geofísica Internacional, 2004 A commercial computer controlled radio receiver has been used to measure signal strength of High Frequency (HF) signals in order to study the effects of geophysical events on radio communications and to test the system for ionospheric monitoring.
N. J. Schuch +9 more
doaj
Degrees of Freedom of Generic Block-Fading MIMO Channels without A Priori Channel State Information
, 2014 We studynthe high-SNR capacity of generic MIMO Rayleigh block-fading channels in the noncoherent setting where neither transmitter nor receiver has a priori channel state information but both are aware of the channel statistics.
Durisi, Giuseppe +3 more
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Frequency estimation in multipath rayleigh-sparse-fading channels [PDF]
, 2004 Maximum-likelihood (ML) data-aided frequency estimation in multipath Rayleigh-fading channels with sparse impulse responses is investigated. We solve this problem under the assumption that the autocorrelation matrix of the pilot signal can be ...
Baronkin, V M, Tozer, T C, Zakharov, Y V
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Polar Coding for Fading Channels
, 2013 A polar coding scheme for fading channels is proposed in this paper. More specifically, the focus is Gaussian fading channel with a BPSK modulation technique, where the equivalent channel could be modeled as a binary symmetric channel with varying cross ...
Koyluoglu, O. Ozan +2 more
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Physical Review BEigenstate thermalization hypothesis (ETH) represents a breakthrough in many-body physics since it allows us to link thermalization of physical observables with the applicability of random matrix theory (RMT). Recent years were also extremely fruitful in exploring possible counterexamples to thermalization, ranging, among others, from integrability ...
Kliczkowski, Maksymilian +3 more
openaire +3 more sources