计算机工程与应用2016，Vol.52Issue(16)：121-125,185,6.DOI:10.3778/j.issn.1002-8331.1410-0092
认知用户基于频谱特征的动态频谱接入算法
Cognitive users based on spectrum signature dynamic spectrum access algorithm
摘要
Abstract
The key of cognitive radio spectrum access technique is to instruct cognitive users how to choose the appropriate unoccupied channel and how to share the spectrum. In the case of rare common control channel, spectrum prediction algo-rithm which based on the Partially Observable Markov Decision Processes(POMDP)can significantly improve the system’s throughput . If the cognitive system undistinguished uses the licensed spectrum, the spectrum holes selected can’t meet the user’s needs. For the cognitive user’s different demands about channel capacity, the dynamic spectrum access process of cognitive radio networks is researched by introducing the appropriate selection principle and the fusion access strategy. In addition, the throughput of cognitive users and the system collision rate are analyzed by using abundant simulation. Results show that the fusion access strategy can effectively improve the system throughput and collision rate.关键词
动态频谱接入/信道容量/适量选择原则Key words
dynamic spectrum access/channel capacity/appropriate selection principle分类
信息技术与安全科学引用本文复制引用
薛伟,张东东,宋成君..认知用户基于频谱特征的动态频谱接入算法[J].计算机工程与应用,2016,52(16):121-125,185,6.基金项目
国家自然科学基金（No.61374047）。 （）
