Resultados Preliminares dos Estudos do Uso de Polarização Slant em ISDB-T Avançado com NUC

Sidi Mane, Amanda Beatriz Cunha dos Santos, Paulo de Tarso de Carvalho Bayma Filho, Wesley Costa de Assis, Rogerio Silva, Leonardo Henrique Gonsioroski

DOI: 10.14209/sbrt.2025.1571157349

Evento: XLIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2025)

Keywords: Constelações Não Uniformes (NUC) Polarização Slant ISDB-T

Abstract

This study evaluates the performance of Advanced ISDB-T using non-uniform constellations (NUC) and slant polarization (+45°/-45°) in urban environments, aiming to meet the requirements of TV 3.0. Employing 16QAM modulation with low-rate LDPC coding (2/16), the tests showed that the use of NUC reduced reception thresholds by up to 120% compared to uniform constellations, with average gains ranging from 2 to 4 dB. The comparison between H/V and slant polarizations indicated equivalent performance. The results confirm the technical feasibility of these solutions, particularly when the goal is to operate under low signal-to-noise ratio (C/N) conditions.

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