An Interference Avoidance Scheme for Orthogonally Multiplexed Cognitive Radio Systems

摘要：

An interference avoidance scheme is proposed for orthogonally multiplexed cognitive radio (CR) systems.The CR systems are based on filter bank modulation (FBM) with special filter bank structures,i.e.,some of the filter bank tree leafs are virtual or not modulated by the transmitted data.This kind of structure is capable of creating holes in the transmitted signal spectrum which can be used to avoid interference.By changing the tree structure of the filter banks such as the tree depth,the number of the virtual leafs,and the location of the virtual leafs,the number and the location of the spectral holes are also variable.In the simulation tests,primary users are modeled as partial band interference (PBI) located in individual spectral bands.It is shown that the proposed scheme is capable of avoiding various kind of PBI.

作者: Li-ping Zhu Zhi-hong Chen Yi-Sheng Zhu

作者单位: College of Information Engineering The Central University for Nationalities,Beijing,China College of Information Engineering Dalian Maritime University,Dalian,China

会议类型: 国际会议

会议名称: 9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）