This article gives an analysis of digital broadcasting systems, which are currently found wide using. Investigated digital modulation techniques that are used in these systems. A comparison of the energy and spectral efficiency of digital modulation. In the process of mathematical modeling of estimated energy required for the transmission of in-formation with the same probability of bit error for each type of modulation. Substantiated expediency of using different modulation techniques for certain digital broadcast systems.
digital broadcasting, digital modulation, frequency spectrum, energy efficiency, spectral efficiency, the probability of error, the filter bandwidth