4 documents found, page 1 of 1
Radio and Network Planning
Velez, Fernando J.; Sebastião, Pedro; Costa, Rui; Robalo, Daniel; Comissário, Cláudio; Rodrigues, António; Aghvami, A. HamidThis chapter starts by presenting the Stanford University Interim (SUI) and modified Friis propagation models. Although the SUI model is being recommended for WiMAX, the comparison between the model and experimental results show that, in our environment, at 3.5 GHz, the modified Friis model with gama = 3 fits better the measurement values. From the analyses of the signal-to-noise-plusinterference ratio, SNIR, i...
Planning and Deployment of WiMAX and Wi-Fi Networks for Health Sciences Education
Sebastião, Pedro; Velez, Fernando J.; Costa, Rui; Robalo, Daniel; Comissário, Cláudio; Rodrigues, AntónioOptimal planning for the integration of WiMAX (Worldwide Interoperability for Microwave Access) and Wi-Fi (Wireless Fidelity) technologies enables real technical conditions to make a hybrid Wi-Fi/WiMAX network available at the Health Sciences Faculty of University of Beira Interior, supporting nomadic applications like videoconference, voice over IP and communication of high resolution video/image. A simple wir...
Hybrid WiMAX and Wi-Fi networks for the support of b-Learning and Telemedicine
Costa, Rui; Velez, Fernando José; Robalo, Daniel Luís Silveira; Marques, Marco; Comissário, Cláudio; Riscado, José; Cavaleiro, Victor; Sebastião, Pedrohis paper addresses the deployment of hybrid WiMAX and Wi-Fi networks for the support of always best connected telemedicine and health sciences education applications. The available services include a LMS (Learning Management System) and several structured functionalities for b-Learning. For the support of these services, fixed and wireless LANs have been deployed, as well as an experimental point-to-multipoint...
Design and Installation of Pre-Wimax Radio Links And Relays
Velez, Fernando José; Costa, Rui; Robalo, Daniel Luís Silveira; Marques, Marco; Comissário, Cláudio; Riscado, José; Cavaleiro, VictorThis paper addresses aspects of design for WiMAX wireless networks to establish a point-to-point, PTP, link with Alvarion BreezeNET B equipment, from the Health Sciences Faculty of University of Beira Interior to Hospital Amato Lusitano (in Castelo Branco, Portugal), and also presents the respective field trial with pre-WiMAX PTP equipment. The design of the link with relays had into consideration the carrier t...