Compara??o entre t?cnicas de redu??o de PAPR em sinais OFDM

• Ano de defesa: 2011
• Autor(a) principal: Aquino, Guilherme Pedro
• Orientador(a): Mendes, Luciano Leonel
• Banca de defesa: Mendes, Luciano Leonel , Souza, Rausley Adriano Amaral de , Resende, Leonardo Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Instituto Nacional de Telecomunica??es
• Programa de Pós-Graduação: Mestrado em Engenharia de Telecomunica??es
• Departamento: Instituto Nacional de Telecomunica??es
• País: Brasil
• Palavras-chave em Português: Redu??o da PAPR; OFDM; SLM; PTS; WHT-OFDM; canal n?o-linear
• Área do conhecimento CNPq: Engenharia - Telecomunica??es
• Link de acesso: http://tede.inatel.br:8080/tede/handle/tede/115

The aim of this research is to present a performance comparison of series PAPR reduction techniques. The analyzed techniques are based in selective mapping schemes (SLM), partial transmission sequence (PTS) and Walsh-Hadamard transform (WHT). Altogether, three SLM derivations are evaluated: SLM using maximum length sequences, SLM using Hadamard sequences and SLM using sequences with complexes values. This research presents, as contribution, a technique for reducing PAPR, which consist in a junction of the PTS and SLM techniques, henceforth referred to as PTSModified. Thus, a total of six techniques are evaluated in this study. In this study, there is a detailed description of each these techniques for PAPR control and also, is presented the efficiency of reduction of PAPR in each technique. This is done by study of probability density function of PAPR, acquired by computer simulation for each case. Further of PAPR reduction, this study also analyses the effect of these techniques in symbol error probability in non-linear AWGN channels.