Sobre o uso da DFT-s-OFDN generalizada para reduzir a interferência inter-numerologia em redes 5G-NR

• Ano de defesa: 2022
• Autor(a) principal: Czekailo, Gláucio Porcides
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Brasil; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial; UTFPR
• Palavras-chave em Português: Sistemas de comunicação móvel; Fourier, Transformadas de; Multiplexação; Mobile communication systems; Fourier transformations; Multiplexing; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA; Engenharia Elétrica
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/30239

Orthogonal Frequency Division Multiplexing (OFDM) systems with a Cyclic Prefix (CP-OFDM) are the base waveform in fifth-generation New Radio (5G-NR) mobile networks, with the Discrete Fourier Transform precoded version (DFT-s-OFDM) as an alternative in Peak-to-Average Ratio (PAPR) limited scenarios. However, since 5G-NR networks use multiple numerologies, the coexistence of these numerologies introduces a novel non-orthogonality in the system, known as Inter-Numerology Interference (INI). The present work proposes an alternative to the use of the CP by means of the Generalized-Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (G-DFT-s-OFDM) waveform. Our results show that the use of the G-DFTs-OFDM waveform significantly reduces the INI in 5G-NR networks.