TY - GEN
T1 - Coordinated channel access in cognitive radio networks
T2 - 28th Conference on Computer Communications, IEEE INFOCOM 2009
AU - Shu, Tao
AU - Krunz, Marwan
PY - 2009
Y1 - 2009
N2 - In a cognitive radio network (CRN), spectrum opportunities should be efficiently utilized through careful coordination between cognitive radio (CR) users. In this paper, we formulate the coordinated channel access as a joint power/rate control and channel assignment optimization problem, with the objective of maximizing the sum-rate achieved by all CRs over all channels. The problem is formulated under a generalized multi-level spectrum opportunity framework, which reflects the microscopic spatial opportunity available to CRs. A centralized polynomial-time approximate algorithm to the problem is developed. We prove the algorithm's correctness and show its accuracy through numerical examples.
AB - In a cognitive radio network (CRN), spectrum opportunities should be efficiently utilized through careful coordination between cognitive radio (CR) users. In this paper, we formulate the coordinated channel access as a joint power/rate control and channel assignment optimization problem, with the objective of maximizing the sum-rate achieved by all CRs over all channels. The problem is formulated under a generalized multi-level spectrum opportunity framework, which reflects the microscopic spatial opportunity available to CRs. A centralized polynomial-time approximate algorithm to the problem is developed. We prove the algorithm's correctness and show its accuracy through numerical examples.
UR - http://www.scopus.com/inward/record.url?scp=70349667669&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349667669&partnerID=8YFLogxK
U2 - 10.1109/INFCOM.2009.5062270
DO - 10.1109/INFCOM.2009.5062270
M3 - Conference contribution
AN - SCOPUS:70349667669
SN - 9781424435135
T3 - Proceedings - IEEE INFOCOM
SP - 2976
EP - 2980
BT - IEEE INFOCOM 2009 - The 28th Conference on Computer Communications
Y2 - 19 April 2009 through 25 April 2009
ER -