Interference Equalization
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Federative Pact and Education Funding: supplementary and redistributive function of the Union FNDE highlighted / Pacto federativo e financiamento da educação: a função supletiva e redistributiva da União - o FNDE em destaque
This thesis discusses the relationship between federative pact and financing of education, whose main point is questioning the supplementary and redistributive function of the Union, especially by the actions implemented by FNDE from 1995 to 2006. Its assumed that the federal administration attempts to establish a minimum standard of equalization under the c
Publicado em: 2009
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2. EQUALIZAÇÃO DE CANAL EM SISTEMAS COM TRANSMISSÃO EM BLOCOS / CHANNEL EQUALIZATION IN BLOCK TRANSMISSION SYSTEMS
The demand for high rate transmission systems, for example in HDTV, third and fourth generation cellular telephony, DSL and so on, causes the rise of a problem: The multipath communications channel (specially in wireless communications), which leads to intersymbol interference phenomenon (ISI). The present work investigates the performance of single-carrier
Publicado em: 2007
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3. New proposals for optmization of digital TV receivers based on OFDM in regional single frequency network environments / Novas propostas para otimização de receptores de TV digital baseados em OFDM em ambientes de redes de frequencia unica regionais
This thesis deals with the optimization of Digital TV receivers based on OFDM, with performance evaluation in regional single frequency networks (SFN). Such environment facilitates the channel distribution, however its characteristics degrade the receiver operation. Initially, projects of loop canceller filters in relay stations are treated, and they are nec
Publicado em: 2007
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4. Processamento adaptativo para cancelamento da interferencia de polarização cruzada em sistemas radio digitais
A interesting approach to improve the spectral efficiency of a digital radio system is the utilization the frequency reuse technique. However due to of the propagation impairments, there exist mutual interference between these two orthogonal channels, known as cross polarization interference. This work studies the interference cancellation by means of adapti
Publicado em: 1991
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5. USO EFICIENTE DA ÓRBITA DE SATÉLITES GEOESTACIONÁRIOS ATRAVÉS DA OTIMIZAÇÃO DE POSIÇÕES ORBITAIS / EFFICIENT USE OF THE GEOESTATIONARY SATELLITE ORBIT THROUGH THE OPTIMIZATION OF ORBITAL LOCATIONS
This work is related to the problem of efficiently using the geoestationary satellite orbit in an interference limited environment. Some techniques to determine the orbital positions of existing and planned satellites are mentioned. A new mathematical model for optimizing satellite orbital positions based on the minimization of an objective function associat
Publicado em: 1987