Abstract
In this work we seek to approach the choice of the Republic of Angola for the ISDB-T telebroadcasting system. The experimental results of the ISDB-T digital transmission system in the Republic of Angola are Execelente. Currently, the Japanese terrestrial digital broadcasting system (ISDB-T) is used in 14 countries around the world (Argentina, Bolivia, Brazil, Chile, Costa Rica, Japan, Peru, Paraguay, El Salvador, Uruguay, Honduras, Venezuela, Philippines, Botswana) and 6 more countries (Angola, Maldives, Sri Lanka, Guatemala, Ecuador, Nicaragua) have adopted this system. The study shows that ISDB-T is a system applicable in our country, as even with the transmitter operating at 50% of its maximum power, the signal is received in a large part of the city of Luanda, with failures only in regions far from the center urban. The implementation of a fully digital transmitter that is foreseen, the increase of the transmitter's power, among other changes, may provide better advantages in implementing the ISDBT in the Republic of Angola. The commitment comes at a time when Angola plans to cover the entire national territory, starting in 2023.
Highlights
There are a large number of digital broadcasting standards in the world today
– ISDB-TSB, on television channels with a width of 6, 7 or 8 MHz for broadcasting broadcast programs, a segment is allocated as one-fourth of the frequency band of a television channel, the frequency band of this segment is of 429 kHz (06/14), 500 (07/14), 571 (08/14); this bandwidth must still be selected taking into account the frequency situation in each country;
Digital Television presents itself as an evolution of analogy television, bringing a great amount of improvements from interactivity, data transmission, improvement in image quality, possibility of transmitting several programs on the same channel, etc
Summary
In 2019 Angola signed a two-year agreement with the Republic of Japan, which consists of the development of the master plan including a timetable for migration to new services such as multimedia transmission, acquisition of transmission equipment, among other services. The Japanese party guarantees technical support, training of staff inside and outside the country, in addition to technological equipment for the implementation of the process in Angola. Digital terrestrial television is part of the modernization of the telecommunications sector, information and social communication technologies in Angola. The purpose of the agreement, the Minister of Telecommunications, Information Technologies and Social Communication Manuel Homem, said that with DTT (Digital Terrestrial Television) the country will be able to transmit content related to the implementation of the distance education program [8]. In figure 2, we show the countries in the world using the ISDB-T system
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