Impacto da técnica SDMA em sistemas celulares

Abstract

The need to find solutions that would support the increasing number of users, has been stimulating many research groups to explore new techniques to increase the capacity of the mobile radio systems. This technique is nominated as SDMA. After a short introduction about GSM, this article presents a resume of some essential concepts to understand the study that was made. Then, some techniques to increase the system capacity, including the SDMA, are presented for FTDMA- and CDMA-based type systems.