%0 Conference Proceedings %T Cognitive Radio Access Optimization Using Multi-parameter Match Ability Estimation %+ School of Computer Science and Telecommunication Engineering %+ Communication Research Center %+ School of Communication Engineering %A Guo, Kunqi %A Sun, Lixin %A Zhao, Xiaoqun %A Jia, Shilou %Z Part 8: Emerging Contributions %< avec comitĂ© de lecture %( Lecture Notes in Computer Science %B 9th Wired/Wireless Internet Communications (WWIC) %C Vilanova i la GeltrĂș, Spain %Y Xavier Masip-Bruin %Y Dominique Verchere %Y Vassilis Tsaoussidis %Y Marcelo Yannuzzi %I Springer %3 Wired/Wireless Internet Communications %V LNCS-6649 %P 483-493 %8 2011-06-15 %D 2011 %R 10.1007/978-3-642-21560-5_40 %K Cognitive radio %K match ability %K utility function %K average waiting time %Z Computer Science [cs] %Z Computer Science [cs]/Networking and Internet Architecture [cs.NI]Conference papers %X In this paper, we formulate the optimal channel access of secondary user system in cognitive radio networks as the total reward maximization by Partially Observable Markov Decision Processes (POMDPs). Match Ability is proposed that takes allowable channel transmission rate and bit-error-rate (BER) required by receiving end into account. A heuristic greedy algorithm for channel access is proposed that is based on the local maximum match ability. By combining the utility function of queuing delay with local match ability, we improve the global average delay fairness. It is demonstrated by simulation results that as the average arrival rate increases, the large stable region of low delay can be maintained by adjusting utility function of the average waiting time under the condition that all the control information time overhead is not considered in the centralized global fairness control. %G English %Z TC 6 %2 https://inria.hal.science/hal-01583656/document %2 https://inria.hal.science/hal-01583656/file/978-3-642-21560-5_40_Chapter.pdf %L hal-01583656 %U https://inria.hal.science/hal-01583656 %~ IFIP-LNCS %~ IFIP %~ IFIP-TC %~ IFIP-TC6 %~ IFIP-WWIC %~ IFIP-LNCS-6649