The new spectrum regulation policies for dynamic spectrum access, especially those concerning the use of the white spaces in the Digital Terrestrial Television (DTT) bands, arise the need for fast and reliable signal identification and classification methods. In this paper we present a two-stage identification method for signals in the white spaces, using combined energy detection and feature detection. The band of interest is divided by means of the Discrete Wavelet Packet Transformation (DWPT) in sub-bands where the signal power is calculated. Modulation classifiers taking into account the statistical parameters of the signal in the wavelet domain are used as features for identifying the modulation schemes, in this case specifically for the DVB-T broadcast standard. As a possible application we are considering an indoor short-range distribution system for video signals. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.
TV white spaces exploitation for signal distribution / Fadda, M.; Murroni, M.; Popescu, V.; Stoianovici, V. C.. - 79:(2012), pp. 65-72. (Intervento presentato al convegno 7th International ICST Conference on Mobile Multimedia Communications, MOBIMEDIA 2011 tenutosi a Cagliari, ita nel 2011) [10.1007/978-3-642-30419-4_6].
TV white spaces exploitation for signal distribution
Fadda M.;
2012-01-01
Abstract
The new spectrum regulation policies for dynamic spectrum access, especially those concerning the use of the white spaces in the Digital Terrestrial Television (DTT) bands, arise the need for fast and reliable signal identification and classification methods. In this paper we present a two-stage identification method for signals in the white spaces, using combined energy detection and feature detection. The band of interest is divided by means of the Discrete Wavelet Packet Transformation (DWPT) in sub-bands where the signal power is calculated. Modulation classifiers taking into account the statistical parameters of the signal in the wavelet domain are used as features for identifying the modulation schemes, in this case specifically for the DVB-T broadcast standard. As a possible application we are considering an indoor short-range distribution system for video signals. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
