The second generation digital video broadcasting system for terrestrial broadcasting (DVB-T2) was designed using a toolbox concept. Compared with its predecessor DVB-T, the new standard introduces many new algorithms and allows for a more flexible parameter configuration. The parameters can be perfectly optimized for each reception scenario, ranging from stationary reception with roof-top aerials, up to portable or mobile reception. However, all countries that have already introduced DVB-T2 mainly focus on stationary reception. In contrast, stationary reception is no relevant option for a potential introduction of DVB-T2 in Germany. Instead, a potential roll-out would focus on the benefits of terrestrial broadcasting compared to satellite and cable, i.e., mobility. Within an extensive field trial in northern Germany, the performance of the different parameter configurations and new algorithms offered by DVB-T2 were analyzed in detail, e.g., multiple physical layer pipes, rotated constellations, and multiple-input single-output. This paper presents the trial network and the obtained measurement results, which are based on thousands of individual measurements. Moreover, the document gives recommendations for an optimal parameter configuration.Index Terms-Digital video broadcasting system for terrestrial broadcasting (DVB-T2), mobile reception, portable reception, field trial, terrestrial broadcasting, Doppler frequency, Bose-Chaudhuri-Hocquenghem (BCH) code packet error rate.
The crowded UHF band makes the VHF band an interesting complement for digital terrestrial broadcasting with additional benefits as lower free space loss and superior propagation conditions. However, the VHF band suffers significantly higher levels of man-made noise compared to the UHF band. Such man-made noise is unintentionally emitted by a large number of electronic devices as e.g. computers or switching effects in the mains. The variety of potential man-made noise sources also leads to a variety of man-made noise characteristics, ranging from white noise to narrow-band interferers or strong impulsive noise events. Almost all state-of-the-art terrestrial broadcast systems as e.g. DVB-T2 are based on the multi-carrier modulation OFDM, which is especially vulnerable towards impulsive noise. Network planners and receiver designers have to take the effects of man-made noise into account for the proper operation of digital VHF broadcast networks. Therefore, this paper shows the results for VHF man-made noise measurements and analysis the impact of man-made noise on DVB-T and DVB-T2 by means of system simulations. Furthermore, the document analyses the effect of selected receiver algorithms to counteract the effects of man-made noise.
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