Imagine yourself modifying your mobile terminal of TDMA to CDMA through a simple software download by the INTERNET or even via radio directly of an ERB. Or a tourist, during a travel in the South America that simply turn on his cellular and the mobile terminal is reconfigured automatically to the air interfaces and the frequencies of the local operator at the country. With the arrival of Digital TV, a software can be carried in the cellular apparel in way to watch and to interact with the local programming. Finally, this same apparel could simply be reconfigured for a series of services, tasks and applications by the substitution of softwares, since the physical layer up the application layer. This is the expected scenario for a close future, whose key technology for its development is the Software Defined Radio (SDR). In this article a fast and brief description of the philosophy of RDS will be given, with the great challenges to be overcome in the future and with the potential benefits for the particular case of Brazil.
André Gustavo Monteiro Lima
(Universidade de Brasília (UnB))