Resumo:
The efficient use of the electromagnetic spectrum becomes increasingly necessary due to
the increase number of cellular devices. One possible solution is the opportunistic spectrum
use in the VHF and UHF bands, allocated for television broadcasting. Therefore,
it is necessary to evaluate the concurrent operation of broadcasting and mobile communication
systems. This work aims to identify, analyze and measure the interoperability
between those systems, by evaluating the feasibility of coexistence of different types of services.
In this article, evaluations were made on two major candidates for the next cellular
generation, the GFDM and the F-OFDM, operating along with the Integrated Services
Digital Broadcasting Terrestrial – ISDB-T standard. The results show the flexibility of the
GFDM and F-OFDM waveforms over the OFDM waveform, thus enabling opportunistic
use of the spectrum over licensed and unlicensed users.
