认知无线电技术是解决无线资源紧缺的有效方法。基于非协作感知的不确定性,协作频谱感知方法具有更高的准确度,因此被人们所关注。文中提出了一种利用协作式能量检测的方法,通过利用近似计算将检测时间缩短,提高检测效率。经仿真结果证实,该方法能有效提高检测结果的准确性。 Cognitive radio technology is an effective solution to the shortage of radio resources. Due to the uncertainty of non-cooperative perception, the cooperative spectrum sensing method has higher accuracy and therefore attracts people’s attention. In this paper, a method of using cooperative energy detection is proposed. By using approximate calculation, the detection time is shortened and the detection efficiency is improved. The simulation results show that the method can effectively improve the accuracy of the test results.