{'fraction_non_alphanumeric': 0.016666666666666666, 'fraction_numerical': 0.013725490196078431, 'mean_word_length': 4.901734104046243, '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}}
Practical Comparison of Decoding Methods for Chipless RFID System in Real Environment

A comparison of two decoding methods for a Chipless RFID system was executed by analyzing the read success rate of a frequency-position coding tag with 12-bit capacity, performing S21-parameter measurements in a real environment, using a fixed antenna and with the tag moving within a 30×30×30 cm3 volume. The first and simplest method applied consists of decoding the tag responses after an ‘empty’ environment subtraction, while the second method consists of applying time-gating to eliminate the structure mode and keep the tag information For this, we have obtained an optimal time window, and have shown that this method enhances the systems success rate, providing twice the reading volume for the tag and up to 3 times the success rate for the tag positioned 30 cm away from the antenna. The use of a more complex decoding process allows the system to be much more robust for decoding a tag in different application scenarios.