Title :
Received signal interpolation for context discovery in Cognitive Radio
Author :
Bolea, Liliana ; Pérez-Romero, Jordi ; Agustí, Ramon
Author_Institution :
Dept. of Signal Theor. & Commun. (TSC), Univ. Politec. de Catalunya (UPC), Barcelona, Spain
Abstract :
This paper addresses the context acquisition to characterize different features of a primary network based on the power measurements obtained by a sensor network. In particular, it presents a comparative study of the impact of natural neighbor, linear, and nearest neighbor interpolation techniques carried out over the measurements at different geographical positions. Extracted features include transmitter position, antenna pattern or propagation model. An evaluation is carried out in scenarios including the effect of both correlated and non-correlated shadowing.
Keywords :
antenna radiation patterns; cognitive radio; feature extraction; power measurement; radio transmitters; wireless sensor networks; antenna pattern; cognitive radio; context acquisition; context discovery; correlated shadowing; feature extraction; linear interpolation; natural neighbor; nearest neighbor interpolation; noncorrelated shadowing; power measurement; primary network; propagation model; received signal interpolation; sensor network; transmitter position; Antenna radiation patterns; Context; Estimation; Feature extraction; Interpolation; Shadow mapping; dynamic spectrum access; interpolation; natural neighbor; nearest neighbor; radio environment map;
Conference_Titel :
Wireless Personal Multimedia Communications (WPMC), 2011 14th International Symposium on
Conference_Location :
Brest
Print_ISBN :
978-1-4577-1786-4
Electronic_ISBN :
1347-6890
