Search Results - "Fraiha Lopes, Ramz L."

Application of Hybrid ARIMA and Artificial Neural Network Modelling for Electromagnetic Propagation: An Alternative to the Least Squares Method and ITU Recommendation P.1546-5 for Amazon Urbanized Cities by Lima, Vinicius D., Gomes, Herminio S., Fraiha, Simone G. C., Fraiha Lopes, Ramz L., Cavalcante, Gervásio P. S.

“…This study sets out an empirical hybrid autoregressive integrated moving average (ARIMA) and artificial neural network (ANN) model designed to estimate…”
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Hybrid ARIMA and Neural Network Modelling Applied to Telecommunications in Urban Environments in the Amazon Region by Gomes, Herminio S., Lima, Vinicius D., Fraiha, Simone G. C., Fraiha Lopes, Ramz L., Cavalcante, Gervásio P. S.

“…This study explores the use of a hybrid Autoregressive Integrated Moving Average (ARIMA) and Neural Network modelling for estimates of the electric field along…”
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Improved Multiobjective Optimization for Cellular Base Stations Positioning by Lopes, Ramz L. Fraiha, Gomes, Igor R., Gomes, Cristiane R., Gomes, Herminio S., Cavalcante, Gervásio P. S.

“…Abstract This work presents improvements to a telecommunication service planning tool for optimal positioning of base stations presented in a previous work…”
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Optimum Positioning of Base Station for Cellular Service Devices Using Discrete Knowledge Model by Gomes, Cristiane R., Gomes, Igor R., Lopes, Ramz L. Fraiha, Gomes, Herminio S., Cavalcante, Gervásio P. S.

“…Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence…”
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Hybrid ARIMA and Artificial Neural Network Modelling Applied for Electromagnetic Propagation: A Coastal City Scenario by Barbosa, Breno de C., Fraiha Lopes, Ramz L.

“…This work shows an application of a hybrid Autoregressive Moving Average model proposed on a previous work. The scenario presented in this study is located in…”
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Validation of KNN-based Empirical Radio propagation Model for Residential Environments by da Fonseca Macedo, Anne Livia, Gomes, Igor Ruiz, Gomes, Cristiane Ruiz, Lopes, Ramz L. Fraiha, Gomes, Herminio Simoes, Cavalcante, Gervasio P. dos Santos

“…This article presents the application of a KNN-based radio propagation model to optimize the positioning of radio base antennas in a residential scenario in…”
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The Femtocell as Return Channel: A Proposal for Brazilian Amazon Region Interactive Digital TV by Costa, Allan B., Santos, Nelson M. Pereira, Braga, Allan dos S., Lopes, Ramz. L. Fraiha, da Silva, Carlos P. Alves, da Silva, Carlos N., Machado, Victor de A., Cavalcante, Gervasio P. dos Santos, Araujo, Jasmine, Frances, Carlos R. Lisboa

“…This work analyses the feasibility of use Femtocells networks to provide return channel on Digital TV. The results were compared with a similar simulation…”
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Empirical ARMA indoor propagation model for WLAN signals in 2.4GHz by Fraiha Lopes, Ramz L., Costa, A. B., Gomes, H. S., Souza, N. W. P., Martins, B. W., Cavalcante, G. P. S.

“…Representing the signal power at a studied environment through a mathematical model is one major challenge of signal propagation study. In this work is…”
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Empirical ARMA outdoor propagation model for amazon cities by Fraiha Lopes, Ramz L., Costa, A. B., Braga, A. S., Gomes, H. S., Fraiha, S. G. C., Rodrigues, J. C., Araujo, J. P. L., Castro, B. S. L., Cavalcante, G. P. S.

“…In this work is proposed an empirical Autoregressive Moving-Average (ARMA) model for signal strength prediction in outdoor environments. A Genetic Algorithm…”
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