Title :
FOCS: Feedback oriented channel selection scheme for Cognitive radios
Author :
Aslam, Saleem ; Lee, Kyung-Geun
Author_Institution :
Dept. of Inf. & Commun., Sejong Univ., Seoul, South Korea
Abstract :
This Cognitive radio network (CRN) is a key technology to solve the problems of spectrum scarcity and limited spectrum utilization. Furthermore, it can offer higher data rate by exploiting the best areas in the radio spectrum. However, the unpredictable nature of the primary users (PUs) seems to be a big challenge for the CRNs. It adversely affects the CR´s quality of service (QoS) parameters. An efficient channel selection scheme can cater for the issue of the PU activity by choosing the low PU activity channels. In this paper, we propose an innovative feedback oriented channel selection scheme (FOCS) where the CR provides feedback to the CR base station (CRBS) about its collision experience with the PUs after completing its data transmission. The CRBS maintains the record about each channel and incorporates this information during the channel selection decision. Simulation results show that FOCS scheme significantly reduces the collisions with the PUs and provides better QoS to CRs.
Keywords :
cognitive radio; feedback; quality of service; wireless channels; CR base station; FOCS; PU activity channels; cognitive radio network; collision experience; data transmission; feedback oriented channel selection scheme; limited spectrum utilization; primary users; quality of service; radio spectrum; spectrum scarcity; Base stations; Channel allocation; Cognitive radio; Quality of service; Radio spectrum management; Sensors; Simulation; channel selection; cognitve radio; feedback; spectrum sensing;
Conference_Titel :
ICT Convergence (ICTC), 2012 International Conference on
Conference_Location :
Jeju Island
Print_ISBN :
978-1-4673-4829-4
Electronic_ISBN :
978-1-4673-4827-0
DOI :
10.1109/ICTC.2012.6386868