中文说明：随着无线通信技术的飞速发展,无线电频谱资源日趋紧张。认知无线电已经成为解决现有频谱资源匮乏的非常有前途有前景的技术。认知无线电是一种智能的无线通信系统,它能够感知周围的无线环境,通过一定的方法相应地改变某些工作参数来实时地适应环境,
English Description：
With the rapid development of wireless communication technology, radio spectrum resources are becoming increasingly scarce. Cognitive radio has become a promising technology to solve the shortage of spectrum resources. Cognitive radio is an intelligent wireless communication system, which can sense the surrounding wireless environment and adapt to the environment in real time by changing some working parameters in a certain way,