Path Loss at the Exact Location of TV inside Residences using Digital Terrestrial Television Signal at 677 MHz

This paper presents the results of indoor propagation measurements conducted at 16 residential sites at 677 MHz using live digital television transmission of National Broadcasting Network (NBN). This study is part of the extensive measurement campaign done last 2011, in partnership with NBN, a government TV network. The main purpose of this study is to measure indoor losses caused by penetration and path loss inside residences at the exact location of analog TV sets. Average Penetration Loss (APL) for each house/building category using the difference between the measured outdoor signal level and the indoor signal level values were computed and compared with similar studies found in the literature. Path loss exponents for four residential categories represent the power law relationship between distance and received power. Path loss contributes to indoor signal reduction thus resulting to poorer television reception quality. The value of path loss exponent n which was found to be decreasing from Classes A, B ,C and D proves that indoor fixtures, interiors and household appliances inside residences contribute to indoor multipath reception.