{'fraction_non_alphanumeric': 0.02753623188405797, 'fraction_numerical': 0.0014492753623188406, 'mean_word_length': 5.169642857142857, '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}}
A New Carrier Frequency Offset Estimation Using CP-ICA Scheme in OFDM Systems

A well-known problem of OFDM is its sensitivity to carrier frequency offset which leads to inter-carrier interference (ICI) in the OFDM symbol. This ICI causes severe degradation of the BER performance of the OFDM receiver. In this paper, we propose a new ICI cancellation algorithm which estimates frequency offset at the time-domain by using cyclic prefix-independent component analysis (CP-ICA) method to the received subcarriers phase rotation. This algorithm is based on a statistical blind estimation method, which mainly utilizes the eigenvalue decomposition (EVD), rotating phasor and the 4th cumulants.