Mendonça, Laércio Martins deTorquato, Ciro Augusto Paula2014-12-172006-12-192014-12-172003-10-17TORQUATO, Ciro Augusto Paula. Estudo do efeito de dipolos em arranjos de antenas adaptativas de sistemas de comunicação DS-CDMA. 2003. 105 f. Dissertação (Mestrado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2003.https://repositorio.ufrn.br/jspui/handle/123456789/15413This master dissertation introduces a study about some aspects that determine the aplication of adaptative arrays in DS-CDMA cellular systems. Some basics concepts and your evolution in the time about celular systems was detailed here, meanly the CDMA tecnique, specialy about spread-codes and funtionaly principies. Since this, the mobile radio enviroment, with your own caracteristcs, and the basics concepts about adaptive arrays, as powerfull spacial filter was aborded. Some adaptative algorithms was introduced too, these are integrants of the signals processing, and are answerable for weights update that influency directly in the radiation pattern of array. This study is based in a numerical analysis of adaptative array system behaviors related to the used antenna and array geometry types. All the simulations was done by Mathematica 4.0 software. The results for weights convergency, square mean error, gain, array pattern and supression capacity based the analisis made here, using RLS (supervisioned) and LSDRMTA (blind) algorithms.application/pdfAcesso AbertoArranjos de AntenasDipolosAntenas AdaptativasDS-CDMAAntenna ArrayDipoleAddaptive AntennasDS-CDMAmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA