TY - GEN
T1 - Opportunistic spectrum access with spectrum heterogeneity in cognitive networks
AU - Yang, Miao
AU - An, Jianping
PY - 2011
Y1 - 2011
N2 - We study the problem of dynamic spectrum sensing and access in cognitive radio networks. A distributed C-MAC (cognitive media access control) protocol is proposed. And based on the theory of the partially observable Markov decision process, a greedy opportunistic spectrum access scheme that maximizes the current reward of secondary users is proposed considering spectrum heterogeneity of secondary users. Numerical results are provided to show the performance characters and good profit of the proposed scheme in cognitive networks. It is show that the performance is influenced by the heterogeneity greatly when the available channels are scarce. Along with the number of common channels increasing, the proposed scheme gets a good performance.
AB - We study the problem of dynamic spectrum sensing and access in cognitive radio networks. A distributed C-MAC (cognitive media access control) protocol is proposed. And based on the theory of the partially observable Markov decision process, a greedy opportunistic spectrum access scheme that maximizes the current reward of secondary users is proposed considering spectrum heterogeneity of secondary users. Numerical results are provided to show the performance characters and good profit of the proposed scheme in cognitive networks. It is show that the performance is influenced by the heterogeneity greatly when the available channels are scarce. Along with the number of common channels increasing, the proposed scheme gets a good performance.
KW - Cognitive MAC
KW - Opportunistic spectrum access
KW - Partially observable Markov decision process (POMDP)
KW - Spectrum heterogeneity
UR - http://www.scopus.com/inward/record.url?scp=80054938900&partnerID=8YFLogxK
U2 - 10.1109/wicom.2011.6040031
DO - 10.1109/wicom.2011.6040031
M3 - Conference contribution
AN - SCOPUS:80054938900
SN - 9781424462520
T3 - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
BT - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
T2 - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
Y2 - 23 September 2011 through 25 September 2011
ER -