Now showing items 1-10 of 410
Testing nonlinear electrodynamics in waveguides: the effect of magnetostatic fields on the transmitted power
(IOP Publishing, 2010-04-21)
In Born–Infeld theory and other nonlinear electrodynamics, the presence of a magnetostatic field modifies the dispersion relation and the energy velocity of waves propagating in a hollow waveguide. As a consequence, the ...
Cognitive Full-Duplex Decode-and-Forward Relaying Networks with Usable Direct Link and Transmit-Power Constraints
The performance of an underlay cognitive radio network that coexists with a primary destination is studied in terms of the outage probability. The investigated secondary network comprises a source-destination pair communicating ...
Maximizing the link throughput between smart meters and aggregators as secondary users under power and outage constraints
(Elsevier B.V., 2016-05-01)
This paper assesses the communication link from smart meters to aggregators as (unlicensed) secondary users that transmit their data over the (licensed) primary uplink channel. The proposed scenario assumes: (i) meters' ...
Weight vector estimation of circular arrays of antennas using Artificial Neural Networks
This paper presents a model for the control of the radiation pattern of a circular array of antennas, shaping it to address the radiation beam in the direction of the user, in order to reduce the transmitted power and to ...
Dynamic Characterization and Equalization of a Power Line Communication Channel
(Institute of Electrical and Electronics Engineers, 2013-12)
Power Line Communication (PLC) systems need signal processing algorithms in order to recover the transmitted signals from the high degrading medium. In the literature exist some techniques that work on the basis of a ...
Spectral characteristics of road surfaces and eye transmittance: Effects on energy efficiency of road lighting at mesopic levels
(Sage Publications Ltd, 2018-10)
In 2010, the CIE published a recommended system for mesopic photometry based on visual performance. According to this system, scenes illuminated at mesopic levels with light sources of high S/P ratio, will produce better ...
Transmission of electric energy without using wires
(Universidad Nacional de Ingeniería, 2019)
DETERMINATION OF ACOUSTIC FIELDS IN ACIDIC SUSPENSIONS OF PEANUT SHELL DURING PRETREATMENT WITH HIGH-INTENSITY ULTRASOUND
(Brazilian Soc Chemical Eng, 2017-04-01)
The benefits of high-intensity ultrasound in diverse processes have stimulated many studies based on biomass pretreatment. In order to improve processes involving ultrasound, a calorimetric method has been widely used to ...