Polarization Analysis in TV 3.0 Transmission: Technical Assessment in Different Reception Scenarios

This article presents a technical analysis of the influ-ence of polarization on terrestrial reception in the TV 3.0 system, also known commercially as DTV+, focusing on the evaluation of polarization effects and their influence over the robustness influence on the robustness of Multiple-Input Multiple-Output (MIMO) operation through polarization diversity. Urban scenarios with different Line-of-Sight (LoS) conditions and two reception environments, outdoor and indoor, were modeled to assess the relative performance of Vertical (V) and Horizontal (H) linear polarizations (0° and 90°), as well as slant polarization (-45° and +45°). The methodology combines vector modeling of the electromagnetic field with parametric simulations based on distance, obstruction, and angular dispersion. The results highlight an asymmetry between V and H polarizations. Horizontal polarization shows superior performance in outdoor environments, while ±45° polarization demonstrated intermediate performance and greater vector stability. The analysis of the Effective Polarization Ratio (EPR) proved decisive in assessing reception robustness. This metric was particularly relevant in indoor reception, where vector degradation can compromise the separation of MIMO streams even at adequate power levels. It is concluded that the choice of polarization should take into account factors such as distance, obstruction, and the predominant reception type. The ±45° configuration is technically interesting due to its balance between robustness, selectivity, and coverage.