The discussion around different network architectures, namely high power/high tower (HPHT) versus low power/low tower (LTLP) is currently a hot topic in different international fora. This paper presents the results of a study to compare coverage, number of sites, and network deployment/maintenance costs associated to three different network configurations (HPHT only, LTLP only, and mixed HPHT + LTLP) for rooftop, mobile, and portable indoor/outdoor digital terrestrial television service delivery. The analysis has been based on a practical network planning scenario. The results have been obtained with coverage simulations in the Basque Country, a region in northern Spain currently served with 64 transmitters of a traditional broadcast network. The results conclude that a LPLT network would require 3.3 more centers for providing the same coverage as the current HPHT network at a cost three times higher. Also, it has been observed that the current HPHT network fails to give portable and mobile coverage numbers close to real-service targets in urban areas. In those cases, the approach with lower number of sites and cost is a mixed HPHT + LTLP network, where a set of LPLT transmitters complement the coverage provided by the HPHT network.Index Terms-Network planning, mobile DTV, DVB-T2, DVB-NGH, low power/low tower (LTLP), high power/high tower (HPHT), spectral efficiency, power efficiency.

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The Cortes of Aragon, Catalonia, and Valencia were well known in Renaissance times for their mature institutional development and their capacity to counterbalance the tendency of monarchs towards authoritarianism. But, from the mid sixteenth century onwards, they were summoned by kings at increasingly long intervals, thus losing part of their visibility in the political scene. But this did not exactly mean parliamentary decline. As Cortes became rarer, lesser corporate bodies, ultimately deriving from the Cortes themselves, acquired an enhanced political status. Different sorts of meetings of estates (brazos) and small committees of members of the estates, while already known in previous times, won a more active role by the late sixteenth century and were a major, if not crucial, factor in the different political crises of the seventeenth century. This article contributes to the current reassessment of the Cortes by emphasizing the role of these bodies, focusing on their interplay with the Cortes, with some comparative remarks on other such bodies in Europe.