{'fraction_non_alphanumeric': 0.02938090241343127, 'fraction_numerical': 0.002098635886673662, 'mean_word_length': 5.15483870967742, '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}}
Power and Spectral Efficiency Advantages of OFDM / OQAM over OFDM / QAM for PHY in Wireless and Cognitive Radio Networks

This paper addresses aspects of power and spectral efficiency advantages of OFDM/OQAM over the conventional OFDM (with QAM) signaling and accessing format for wireless networks and cognitive radio (CR) applications. The emphasis is on the ability of the OFDM/OQAM format to work without cyclic-prefix (CP), and to have a relatively small number of subchannels without incurrence of power and spectral losses inherent to OFDM/QAM heavy reliance on it. Specifically, the following aspects are elucidated: 1) exponentially increasing Eb/No degradation in OFDM with increasing QAM constellations size, and 2) reduced PAPR in OFDM/OQAM and consequently better PSD mask fitting. These two aspects are supported by computer simulation results. Additional OFDM/OQAM advantages, as the multipath diversity gains, are also briefly discussed.