Detalhes bibliográficos
Ano de defesa: |
2010 |
Autor(a) principal: |
Silva, F?bio Rodrigues da
 |
Orientador(a): |
Guimar?es, Dayan Adionel
 |
Banca de defesa: |
Guimar?es, Dayan Adionel
,
Mendes, Luciano Leonel
,
Costa, Renata Braz Falc?o da
 |
Tipo de documento: |
Dissertação
|
Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Instituto Nacional de Telecomunica??es
|
Programa de Pós-Graduação: |
Mestrado em Engenharia de Telecomunica??es
|
Departamento: |
Instituto Nacional de Telecomunica??es
|
País: |
Brasil
|
Palavras-chave em Português: |
|
Área do conhecimento CNPq: |
|
Link de acesso: |
http://tede.inatel.br:8080/tede/handle/tede/122
|
Resumo: |
This dissertation presents concepts and simulation results concerning some multicarrier code-division multiple access (MC-CDMA) systems. They use frequency spread coding (FSC) as a means for providing diversity without the explicit addition of any redundancy in time or frequency. They also use double spreading code (DC) per user as a mean for combating the multiuser interference (MUI) in the downlink of a cellular mobile communication system. After a theoretical review about some fundamental concepts, a reference CDMA system is presented and two modifications of this system are proposed and analyzed. These modifications are related to the incorporation of the FSC and DC techniques. Simulation results are then presented and discussed. |