{'fraction_non_alphanumeric': 0.028333333333333332, 'fraction_numerical': 0.005, 'mean_word_length': 5.326315789473684, '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}}
Simulated Annealing Method for Construction of High-Girth QC-LDPC Codes

We present a simulated annealing method that construct high-girth quasi-cyclic low-density parity check (QC-LDPC) codes. The proposed method is applicable to both regular and irregular protograph codes. The method show improvement in term of minimal circulant size compare with previous described methods: Hill-Climbing and improved PEG. Simulated results are presented to demonstrate performance gain of proposed construction method in error-floor region under base graph 2 (BG2) using 5G eMBB standard length adaption method.