This article presents the factors that may degrade\nthe reception of a digital TV signal, through the analysis of a\ncommunication channel. Methodologies and factorial\nexperimental results with the communication channel are\npresented, and the analysis of meteorological factors that\ninfluence the reception quality of the ISDB-TB system based on\ndata regarding the quality of the digital signals collected from\nsome TV stations in S�£o Paulo. From the data obtained,\nstatistical techniques were applied, such as planning and analysis\nof factorial experiments, simple and multiple linear regressions\ntests for measurement equality in order to determine which\nfactors had greater influence on the degradation of digital TV\nsignal.
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