很好的关于认知无线电的综述，对频谱感知，频谱管理以及动态接入方法进行了很详尽的阐述-Good overview on cognitive radio, spectrum sensing, spectrum management, and dynamic access methods are very detailed exposition

matlab程序，核函数方法，可用于认知无线电频谱感知中(kernel function method for Spectrum sensing in cognitive radio)