Comparativa entre el uso de técnicas MIMO y SISO en sistemas interiores de televisión digital terrestre con estándar ISDB-TB, en un ambiente simulado.

Abstract

The objective of the work is to compare the transmission with the terrestrial digital television standard adopted by Ecuador, ISDB-Tb, without spatial diversity techniques (SISO), as the norm indicates; and the transmission with a modified standard, which has diversity techniques (MIMO). Through computational simulations, transmissions of a bit frame are carried out through the study standard, from which values of signal-to-noise ratios (SNR) are obtained, which will serve as the basis for the comparison; the work consists of modifying the simulated ISDB-Tb system, in such a way that it allows the insertion of spatial diversity techniques, which once achieved allows to make new transmissions of the same plot previously used, to obtain other values of signal-tonoise ratios, which will be compared to the data initially taken and the conclusions of this work

can be defined from them. As a final result we obtain, in a quantitative way, the improvement in

terms of robustness as a consequence of the insertion of spatial diversity MIMO 2x2 in the digital

terrestrial

television standard ISDB-Tb; for which comparative graphs of BER vs SNR are presented between SISO and MIMO 2x2 systems. This research shows that it is possible to combat the hostility of the radio propagation medium, mitigating the consequences of multipath interference, thanks to the implementation of spatial diversity techniques.