TCC de Graduação e Especialização

URI Permanente desta comunidade

Agora exibindo 1 - 1 de 1

Estudo da implementação de redes Long Term Evolution em Florianópolis/SC
(2013) Pereira, Leandro; Sens Junior, Nilto
The chapter Architecture of Cellular Networks, presents the evolution of network releases of 3GPP (3rd Generation Partnership Project), the logical architecture of the E-UTRA (Evolved - Universal Terrestrial Rádio Access) with interfaces and protocols associated with it as well as the logical architecture of the EPC (Evolved Packet Core). While in LTE (Long Term Evolution) Air Interface Principles, we describe the techniques used in rádio interface for uplink and dowlink considering the principles of OFDM (Orthogonal Frequency Division Multiplexing) and its channel structure of the air interface. It's also detailed the time domain structure of the rádio interface in the uplink and downlink for FDD (Frequency Division Duplex) and TDD (Time Division Duplex), the principles of OFDMA in downlink, SC-FDMA (Single Carrier Frequency Division Multiplexing) in uplink, MIMO (Multiple Input Multiple Output) and the role of MBMS (Multimedia Broadcast Multicast Service) in LTE. The case study on the activation of LTE network in Florianópolis, exposes the motivation for the implementation of 4G service in Brazil, the frequencies tendered for this purpose, the equipment used for signal transmission, coverage simulations and evaluation of the results obtained after activation of the network.