| Sumario: | The changes in the different standards for digital
terrestrial television (DTT) have as target to increase the spectrum efficiency used by a channel, to add interactive services,
video on demand, and others. To do that, they must improve
the processes of compression and multiplexing made over the
contents (video and audio) that will be transmitted. This study
assesses the compression level for the Digital Video Broadcasting standard (DVB), the encapsulation and multiplexing of
contentlevel transport streams (TS). The TV Headends of the
DTT signals, have the function of emit the television content
in a pointto-multipoint system using Single Frequency Networks
(SFN),for this reason must to emit the different contents multiplexed to form a single TS. In the digital signal processing
two multiplexing techniques have been considered: statistical
multiplexing, where be develop variations in the bitrate in each
of the contents depending of his priority and fixed multiplexing
where be develops a fixed bitrate for each content, having
lower spectral efficiency by channel with respect to statistical
multiplexing.
Being the statistical multiplexing one digital processing technique
that has begun to implement in some regions of the world, is
pertinent to check that existing models permits to evaluate the
treatment techniques in the TV Headends for it was characterized
a TS with ten contents (audio and video), by the norm ETSI
TR 101290.This study verified the performance of the statistical
multiplexing model in the audio and video contents, under the
DVB standards with variations in bit rate content, characterizing
the measures according to the standard guidelines for DVB
systems measures in TS
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