中文说明：
为了提高认知无线电中感知用户对授权用户(主用户) 的检测概率,提出一种新的基于循环谱统计量的主用户信号检测算法. 该算法利用循环谱离散频域平滑方法,对信号的循环谱在循环频 率处建立合理的检测统计量,然后求解得到对应不同虚警概率的判决门限,以使感知用户能检测信 噪比更低的授权用户信号。
English Description：
In order to improve the detection probability of perceptual users to authorized users (primary users) in cognitive radio, a new primary user signal detection algorithm based on cyclic spectrum statistics is proposed The algorithm uses the discrete frequency domain smoothing method of the cyclic spectrum to smooth the cyclic spectrum of the signal at the cyclic frequency