TY - GEN
T1 - Dynamic spectrum access in heterogeneous networks
T2 - 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009
AU - Hamouda, Soumaya
AU - Hamdaoui, Bechir
PY - 2009
Y1 - 2009
N2 - The next generation of radio wireless networks is expected to support spectrum decision operations that will allow a cognitive radio terminal to share the frequency bandwidth with primary users without impairing their QoS requirements. This can indeed enhance the utilization of the limited spectrum resources, and help meet the growing bandwidth demand. In this paper, we propose a new, cross-layer algorithm that allows a cognitive terminal to share and access to either HSDPA or WiMAX licensed spectrum while giving priority to the primary users. This algorithm not only considers the interference caused by the cognitive terminal, but also enhances the achievable throughput of this cognitive terminal. Simulation results show the effectiveness of our spectrum access scheme. Under our proposed scheme, the achievable data rate of the cognitive radio terminal is increased by 30% when compared with that obtained under common access schemes.
AB - The next generation of radio wireless networks is expected to support spectrum decision operations that will allow a cognitive radio terminal to share the frequency bandwidth with primary users without impairing their QoS requirements. This can indeed enhance the utilization of the limited spectrum resources, and help meet the growing bandwidth demand. In this paper, we propose a new, cross-layer algorithm that allows a cognitive terminal to share and access to either HSDPA or WiMAX licensed spectrum while giving priority to the primary users. This algorithm not only considers the interference caused by the cognitive terminal, but also enhances the achievable throughput of this cognitive terminal. Simulation results show the effectiveness of our spectrum access scheme. Under our proposed scheme, the achievable data rate of the cognitive radio terminal is increased by 30% when compared with that obtained under common access schemes.
KW - Cognitive radio networks
KW - Dynamic spectrum access
KW - HSDPA
KW - Heterogeneous networks
KW - WiMAX
UR - http://www.scopus.com/inward/record.url?scp=70450277277&partnerID=8YFLogxK
U2 - 10.1145/1582379.1582654
DO - 10.1145/1582379.1582654
M3 - Conference contribution
AN - SCOPUS:70450277277
SN - 9781605585697
T3 - Proceedings of the 2009 ACM International Wireless Communications and Mobile Computing, Connecting the World Wirelessly, IWCMC 2009
SP - 1253
EP - 1257
BT - Proceedings of the 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009
PB - Association for Computing Machinery (ACM)
Y2 - 21 June 2009 through 24 June 2009
ER -