Research Article
Joint Channel and User Selection for Transmission and Sensing in Cognitive Radio Networks
@INPROCEEDINGS{10.4108/icst.crowncom.2012.248393, author={Salim Eryigit and Tuna Tugcu}, title={Joint Channel and User Selection for Transmission and Sensing in Cognitive Radio Networks}, proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2012}, month={7}, keywords={cooperative sensing sensing scheduling joint scheduling cognitive radio sensing task assignment}, doi={10.4108/icst.crowncom.2012.248393} }- Salim Eryigit
Tuna Tugcu
Year: 2012
Joint Channel and User Selection for Transmission and Sensing in Cognitive Radio Networks
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2012.248393
Abstract
Cooperation among several secondary users for successful spectrum sensing defines an upper bound on the number of channels that can be sensed. Consequently, the maximum utilization is bounded by the number of sensing nodes rather than the availability of the channels. Hence, a subset of the channels should be selected based on the traffic requirements, and the secondary users should be assigned to those channels for the sensing task. In addition, secondary users experience different channel conditions due to interference, noise, and geographical location. Therefore, a secondary user should be assigned to a channel for which its sensing metrics are satisfactory. In this paper, we consider the problem of channel and user selection for cooperative sensing task. We model the mentioned channel selection and user assignment problem as a non-linear optimization problem and solve it using two alternative objectives to achieve increased throughput and number of satisfied users.