Zobrazeno 1 - 10
of 21
pro vyhledávání: '"F. T. Bendimerad"'
Publikováno v:
International Journal of Computational Intelligence Systems, Vol 9, Iss 4 (2016)
This paper describes the application of an evolutionary optimization method to design satellite constellation for continuous regional coverage without intersatellite links. This configuration, called mutual coverage, is related to some technical limi
Externí odkaz:
https://doaj.org/article/5cca72bc0e7647cebede517cb3b5a042
Publikováno v:
Radioengineering, Vol 17, Iss 4, Pp 39-44 (2008)
In this paper, a technique based on hybrid particle swarm optimiser with breeding and subpopulation is presented for optimal design of reconfigurable dual-beam linear array antennas and planar arrays. In the amplitudephase synthesis, the design of a
Externí odkaz:
https://doaj.org/article/547ca8d0ec2d475ea6d7c2d046ef3a3a
Publikováno v:
Radioengineering, Vol 17, Iss 1, Pp 56-63 (2008)
An efficient numerical algorithm is presented for the numerical modeling of the propagation of ultrashort pulses with arbitrary temporal and frequency characteristics through linear homogeneous dielectrics. The consequences of proper sampling of the
Externí odkaz:
https://doaj.org/article/9c6f65e217ce4d11a7987b38d3e08738
Publikováno v:
Radioengineering, Vol 16, Iss 2, Pp 28-33 (2007)
In this paper a new method is described for multibeam antennas synthesis where both the amplitude and phase of each radiating element is a design variable. The developed optimization method made possible to solve the synthesis problem and to answer a
Externí odkaz:
https://doaj.org/article/26782e7794de4b55a66dd91abc7f1cb7
Publikováno v:
Radioengineering, Vol 16, Iss 1, Pp 23-30 (2007)
This paper describes a usual application of back-propagation neural networks for synthesis and optimization of antenna array. The neural network is able to model and to optimize the antennas arrays, by acting on radioelectric or geometric parameters
Externí odkaz:
https://doaj.org/article/9415f9ee957a4c5488dfdcba78cd3322
Publikováno v:
Radioengineering, Vol 15, Iss 3, Pp 10-14 (2006)
An optimization problem for designing nonuniformly spaced, linear antenna's arrays is formulated and solved by means of a controlled random search algorithm. The proposed iterative method aims at a linear array and the optimization of element positio
Externí odkaz:
https://doaj.org/article/53139d3f9bcc4c6e855af9958f6df87c
Publikováno v:
Modelling and Simulation in Engineering, Vol 2012 (2012)
A transmission line model is used to design corporate-fed multilayered bow-tie antennas arrays; the simulated antennas arrays are designed to resonate at the frequencies 2.4 GHz, 5 GHz, and 8 GHz corresponding to RFID, WIFI, and radars applications.
Externí odkaz:
https://doaj.org/article/3b41817d9f7e48e38fec5dfd628296fd
Publikováno v:
Journal of Physics: Conference Series. 2134:012027
Hybrid precoding is a challenging design for massive MIMO systems that involves a combination of analog and digital processing, aiming to maximize the spectral efficiency (SE). Most works on hybrid precoding focus on the single phase shifter (SPS) im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::576a35f5e797153c677d2aff367937b3
https://doi.org/10.1088/1742-6596/2134/1/012027
https://doi.org/10.1088/1742-6596/2134/1/012027
Publikováno v:
International Journal of Distributed and Parallel systems. 3:275-286
The work presented in this paper proposes a technique for bandwidth enhancement by using log periodic printed antennas arrays. To achieve this, an analysis rigorous method (Moment’s method) will be retained to validate the antennas array performanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9e26b0f2b211076c32ff16f297356d
https://doi.org/10.5121/ijdps.2012.3323
https://doi.org/10.5121/ijdps.2012.3323
Publikováno v:
2015 3rd International Conference on Control, Engineering & Information Technology (CEIT).
A communication satellites play a large role in the socio-economic development of a country, however the satellite communication system design trade-offs increase with the complexity of the payload requirements. For reliable and dynamic in-orbit sate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e8d13e3b1001abe681b2e6c2582124b
https://doi.org/10.1109/ceit.2015.7233120
https://doi.org/10.1109/ceit.2015.7233120