Detecção de energia baseada em sensoriamento de espectro em rádio cognitivo
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Imported Edition - Ships in 18-21 Days
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Com o r�pido uso das comunica��es sem fios em �mbitos pessoais, comerciais e governamentais, a utiliza��o eficiente do espectro tornou-se um tema de grande interesse. A maioria das bandas licenciadas sofre de subutiliza��o e menor ocupa��o do espectro. A tecnologia de r�dio cognitivo promete ser uma solu��o para o problema da baixa ocupa��o do espectro e da utiliza��o ineficiente do espectro de r�dio licenciado. Um dos principais componentes da tecnologia de r�dio cognitivo � a dete��o do espectro. A dete��o de energia (ED) � uma das t�cnicas populares de dete��o do espectro para o r�dio cognitivo. Neste trabalho, propus o stick RTL 2832U SDR como adequado para o m�todo de dete��o de espectro baseado na dete��o de energia. Nesta experi�ncia, capturamos o sinal em tempo real proveniente da BTS em diferentes cidades em �reas rurais e urbanas usando um stick RTL 2832U SDR para decidir se a banda de frequ�ncia est� dispon�vel ou n�o. O software GNU Radio permite a implementa��o da t�cnica de dete��o de espectro por dete��o de energia usando o RTL-SDR.
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