Mendonça, Laércio Martins deRodrigues, Eduardo Jorge Brito2014-12-172007-02-122014-12-172005-12-16RODRIGUES, Eduardo Jorge Brito. Um estudo do aumento da capacidade de sistemas 3g WCDMA usando técnicas 3.5G de expansão do enlace reverso. 2005. 149 f. Dissertação (Mestrado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2005.https://repositorio.ufrn.br/jspui/handle/123456789/15398The introduction of new digital services in the cellular networks, in transmission rates each time more raised, has stimulated recent research that comes studying ways to increase the data communication capacity and to reduce the delays in forward and reverse links of third generation WCDMA systems. These studies have resulted in new standards, known as 3.5G, published by 3GPP group, for the evolution of the third generation of the cellular systems. In this Masters Thesis the performance of a 3G WCDMA system, with diverse base stations and thousand of users is developed with assists of the planning tool NPSW. Moreover the performance of the 3.5G techniques hybrid automatic retransmission and multi-user detection with interference cancellation, candidates for enhance the WCDMA uplink capacity, is verified by means of computational simulations in Matlab of the increase of the data communication capacity and the reduction of the delays in the retransmission of packages of informationapplication/pdfAcesso AbertoWCDMAUMTSCapacidade de TransmissãoTécnicas de 3.5G EULRedução do Quadro de TransmissãoRetransmissão Automática HíbridaDetecção Multi-UsuárioCancelamento de InterferênciasWCDMAUMTSData Throughput3.5G EUL TechniquesShorter Frame SizeHybrid Automatic RetransmissionMulti-User DetentionInterference CancellationmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA