An study of OFDM signal detection using cyclostationarity

GUSTAVO GONZALEZ; JUAN COUSSEAU; FERNANDO GREGORIO; RISTO WICHMAN; STEFAN WERNER

Rosario, Argentina

Workshop; XIII Reunión de Trabajo en procesamiento de la Información y Control,; 2009

Ciencias Exac, Ing. y Agrim. de la Univ. Nac. de Rosario,

In a Spectrum Pooling context, Cognitive Radio nodes have to perform spectrum sensing in order to find available spectrum holes. In this paper, OFDM cyclostationarity is studied as the best detector choice to find white spaces in the spectrum. OFDM signal detection can be performed using the induced cyclostationarity of the cyclic prefix. On the other hand, OFDM signal identification can be performed through the use of pilot patterns. These two cyclostationary based detectors are tested in different channel conditions using simulations. In addition, some unsolved issues of the OFDM detection context are discussed.nodes have to perform spectrum sensing in order to find available spectrum holes. In this paper, OFDM cyclostationarity is studied as the best detector choice to find white spaces in the spectrum. OFDM signal detection can be performed using the induced cyclostationarity of the cyclic prefix. On the other hand, OFDM signal identification can be performed through the use of pilot patterns. These two cyclostationary based detectors are tested in different channel conditions using simulations. In addition, some unsolved issues of the OFDM detection context are discussed.