Dynamic spectrum access (DSA) for secondary networks has the potential to improve
spectrum utilization and thus mitigate the problem of spectrum scarcity by finding spectrum …

Dynamic spectrum access (DSA) enables secondary networks to find and efficiently exploit
spectrum opportunities. A key factor to design a DSA network is the spectrum sensing …

Cognitive Radio (CR) is a promising technology that overcomes the problem of spectrum
scarcity and underutilization in an efficient manner. Spectrum sensing is one of the most …

采用CTMC 模型分析了网络状态的统计特性, 考虑各个次用户感知能力的差异性,
分别从主用户和次用户的角度出发, 建立了2 个关于次用户调度方案的整数规划问题 …

The need to improve the utilization efficiency of the limited radio resources in the face of the
increasing number of radio network services, coupled with the growing interest in making …

Different priorities of users' access are defined in cognitive radio networks (CRNs) in order to
differentiate the spectrum usage: primary user (PU) preferentially occupies the band …

A large scale of spectrum sensing techniques are proposed to improve the use of spectrum
resources. However, the EE (energy efficiency) should be guaranteed for both primary and …

In wireless communication systems, there is a need to design efficient schemes in order to
overcome the problem of spectrum scarcity. One technology to address the problem of …