中文说明：
认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。
English Description：
Cognitive radio technology is proposed to improve spectrum efficiency, and the key technology of cognitive wireless implementation is spectrum sensing. As we all know, cooperative detection improves the performance of cognitive user system detection in fading environment. This paper proposes a new detection scheme based on cooperative detection, which uses the double threshold method to improve the system performance, taking into account the limited bandwidth and enhanced performance, It is the premise of performance optimization of cooperative detection based on threshold detection. It is very useful for threshold optimization cooperative detection in the future