Power Delay Profile
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Indoor Characterization of Power Delay Profile Using Equivalent Antenna Representation in Uniform FDTD Lattices
Abstract It is shown that proper representation of transmitting and receiving antennas in indoor environments are decisive for accurate prediction of electromagnetic power transfer parameters using the standard 3D-FDTD method. With the standard Yee method, it is not always possible to precisely describe all the geometrical details of electrically small anten
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
-
2. SFN channel measurements in Brazil
In this paper, field measurements carried out in a suburban SFN network with two synchronized transmitters are reported. It is found that the radio signal coverage of the distributed transmission scheme is distinctly improved when compared to a single transmitter system. The path loss gain and improvement associated to the SFN scheme are obtained as well as
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
-
3. Comparison between OFDM and STDCC mobile channel sounders at 3.5 GHz
In this paper, we present a comparison between OFDM and STDCC sounding techniques used to wide band channel characterization in suburban environments at 3.5 GHz band. Measurements of the received signal's power delay profile and power level for each of the sounding techniques were obtained. These experimental results are presented and compared. For this comp
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
-
4. O poder judiciário no Brasil : estrutura, críticas e controle
The object of this dissertation is the study of the Judiciary Power structure and the critical discussion of its performance. It was focused the Brazilian constitutional history in parallel with the Brazilian Judiciary Power, its bureaucratical and traditional structure, and its misfunctions. It is verified that, beside the organizational crisis, confirmed i
Publicado em: 2006
-
5. MIMO MEASURED CHANNELS: CAPACITY RESULTS AND ANALYSIS OF CHANNEL PARAMETERS / MEDIDAS DO CANAL MIMO INDOOR: ANÁLISE DA CAPACIDADE E DOS PARÂMETROS DO CANAL
Multiple antenna systems known as MIMO (Multiple Input Multiple Output) systems have been proposed as an effective way to address the user demand for high data rate applications in wireless systems. This is especially important in systems where the capacity attained with traditional techniques is very limited due to the adverse characteristics of the propaga
Publicado em: 2005
-
6. RADIOLOCALIZAÇÃO DE TERMINAIS DE COMUNICAÇÕES MÓVEIS / RADIOLOCATION OF MOBILE COMMUNICATIONS TERMINALS
This work addresses the radiolocation problem of a moving terminal in a cellular mobile communications environment. New alternatives are developed for position estimation, assuming that the Time of Arrival (ToA) measurements obtained from radio link are corrupted by additive noise and have positive mean error during random periods of time due to the non-line
Publicado em: 2004
-
7. ACTUAL MOBILE-RADIO PROPAGATION CHANNEL RESPONSES ESTIMATES IN THE SPATIAL AND TEMPORAL DOMAINS. / ESTIMAÇÃO DAS RESPOSTAS DO CANAL REAL DE PROPAGAÇÃO RÁDIO-MÓVEL NOS DOMÍNIOS ESPACIAL E TEMPORAL ANÁLISE DA SUPRESSÃO DE RUÍDO POR DECOMPOSIÇÃO WAVELET COMO TÉCNICA COMPLEMENTAR DE PROCESSAMENTO
No cenário atual das telecomunicações móveis, os arranjos de antenasvoltaram a receber grande atenção dos pesquisadores, especialmente quando esquemas adaptativos de modificação de seus diagramas de radiação são utilizados. Uma das aplicações que exploram o potencial dos arranjos de antenas é o seu uso como forma de aumentar consideravelmente a
Publicado em: 2003