from both power and frequency efficiency. Otherwise, using MCS allows to win at
least one indicator of power or frequency efficiency, without deteriorating other. Using
optimal MCS achieves the best information efficiency – the ratio of communication
channel productivity to its throughput, while simultaneously satisfies the BER
requirements.
The transition from the binary signals in the radio channel to the multi-position
signals leads to increased productivity 1.5-2 times while substantially reducing energy
efficiency.
To increase throughput, the modulation mode 256-QAM introduced additionally
in DVB-T2 and Fourier transform of 16k and 32k. Noise immunity, in turn, is
enhanced by the new encryption algorithms, and by the rotation of the signal
constellation.
Proper selection of MCS minimizes losses in a given coverage area, optimizes
power value of transmitter, throughput and stability of the system (Fig. 1).
Figure 1. The maximum throughput of DVB-T and DVB-T2 systems
Source: developed by the author
As can be seen from Fig. 1, the characteristics of DVB-T2 standard are close to
the Shannon bound, therefore a further noise immunity improvement and throughput
increase are hardly possible within the existing model for digital terrestrial television
broadcasting.
So, the aim of the research work is to identify the features of the DVB-T2
television broadcasting, which can be borrowed for use in multiservice duplex
communication lines and systems, and to provide suggestions for improving the
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