Decentralized Cognitive MAC Protocol Based on SARSA
In this paper,we propose a decentralized cognitive MAC protocol based on SARSA that allow secondary users to independently seek opportunistic spectrums without exchanging any control information among them.Due to sensing equipment constrains,dynamic spectrum access has become a major problem faced by the cognitive radio in an uncertain environment.Partially Observable Markov Decision Process (POMDP) is considered to be an effective way to solve this problem.Under a POMDP framework,the MAC protocol we proposed,which has a self-learning and online learning ability,does not require the channel state transition probability of the primary network,and can take full advantage of the past sensing and access experiences to optimize current channel access.The simulation results show that the proposed approach can effectively reduce the conflict probability between the second user (SU) and the primary user (PU),as well as SU and SU,and improve system throughput and spectrum efficiency.
POMDP SARSR cognitive radio decentralized cognitive MAC
Liubin Jiang Hong Jiang Shuang Wu Xia Zhou
School of Information Engineering Southwest University of Science and Technology Mian Yang, China Mian Yang Weibo Electronic Co. Ltd Mian Yang, China
国际会议
2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))
成都
英文
502-506
2012-11-09（万方平台首次上网日期，不代表论文的发表时间）