The GSMA released findings of a new study from ATDI 1, which proves that careful planning of spectrum usage can mitigate potential interference from mobile (LTE) and broadcast services (TV).

In October, Brazilian regulator Anatel decided to allocate the digital dividend and adopt the Asia Pacific (APT) 700 MHz band plan for new LTE mobile services. Forecasts show that using the 700 MHz band for mobile broadband would create an additional USD 1.4 billion to GDP and generating additional tax revenue of USD 1.3 billion by 2020. The study focused on the cities of Brasilia, Campinas and Sao Paulo as these are likely to be some of the areas where potential interference could present the greatest issues.

The key findings of the report include: the population affected is generally small; applying filters can help to significantly lower the probability of out-of-band and blocking interference; the probability of interference of LTE consumer devices with the ISDB-T TV system from blocking and out-of-band emissions is low; and adopting plans that avoid high power emissions in the upper TV channels (especially channels 48-51) will support coexistence.