Title :
Experimental study of a Wavelet-based spectrum sensing technique
Author :
De Almeida, Erika Portela Lopes ; De Carvalho, Paulo Henrique Portela ; Cordeiro, Pedro Antero Braga ; Vieira, Robson Domingos
Author_Institution :
Dept. of Electr. Eng., Univ. of Brasilia, Brasilia
Abstract :
In this paper, the energy detection spectrum sensing technique, based on the wavelet transform, is investigated. In order to evaluate the accuracy of the methodology, spectrum measurements were made in bands allocated for FM broadcast (88-108 MHz) and mobile services (824-835 MHz). Modifications in an existing technique were proposed in order to improve the spectrum sensing when applied in real environments.
Keywords :
broadcast channels; cognitive radio; signal detection; wavelet transforms; FM broadcast; cognitive radio; energy detection spectrum; frequency 824 MHz to 835 MHz; frequency 88 MHz to 108 MHz; mobile services; spectrum measurements; spectrum sensing technique; wavelet transform; Channel bank filters; Cognitive radio; Computer simulation; Detectors; Filter bank; Noise level; Radio frequency; Radio transmitters; Testing; Wavelet transforms; Cognitive radio; energy detection; spectrum sensing; wavelet transform;
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2008.5074682
