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论文类型： 期刊论文

发表时间： 2009-08-01

发表刊物： IEEE COMMUNICATIONS LETTERS

收录刊物： SCIE、EI、Scopus

卷号： 13

期号： 8

页面范围： 609-611

ISSN号： 1089-7798

关键字： alpha-stable distribution; constant modulus algorithm; fractional lower-order statistics; MIMO equalization

摘要： The presence of non-Gaussian impulsive noise in wireless system can degrade the performance of existing equalizers and signal detectors. In this paper, the problem of blind source separation and equalization for MINI systems in heavy-tailed impulsive noise is studied. A generalized multi-user constant modulus cost function by employing the fractional lower-order statistic of the equalizer input signal is proposed. The associated adaptive blind equalization algorithm based on a stochastic gradient descent method is defined as fractional lower-order multi-user constant modulus algorithm (FLOS_MU_CMA). Computer simulations are presented to illustrate the performance of the new algorithm