关键词: α-稳定分布, 多用户检测, 广义恒模算法, 高斯白噪声

Abstract: The conventional multi-user detection methods which are under the condition of Additive White Gaussian Noise（AWGN） channel assumption will incur significant performance degradation when there is impulsive noise in the channel.However，many physical channels，in the real situation，coexist with the impulsive noise.The α-stable distribution is adopted to imitate the impulsive noise occurring in many physical channels.Based on the character of impulsive noise and the elements of constant modulus algorithm，a multi-user detection method based on generalized constant modulus algorithm is introduced.Simulation results indicate the method is robust and offer good performance in both AWGN channel and impulsive noise channel.

Key words: α-stable distribution, multi-user detection, generalized constant modulus algorithm, Additive White Gaussian Noise（AWGN）