{'fraction_non_alphanumeric': 0.030206677265500796, 'fraction_numerical': 0.017488076311605722, 'mean_word_length': 4.779816513761468, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Field Testing of LDM and SHVC Broadcast in ATSC 3.0

This paper presents field testing results of Scalable HEVC (SHVC) and Layered Division Multiplexing (LDM) broadcast in the ATSC 3.0 standard. A 1080p HD content is encoded in Base Layer (BL) of SHVC targeted for a robust indoor or mobile service, and it is combined with Enhancement Layer (EL) of SHVC to provide 4K-UHD fixed service. The field testing also includes existing HEVC simulcast and Time Division Multiplexing (TDM) broadcast, so as to provide comprehensive measurement analysis as well as comparison study given the possible service options that ATSC 3.0 provide.