A Robust Constant Modulus Algorithm in Alphastable Noise Environments

摘要：

To improve the performance of the blind equalizer in alpha-stable noise environments, a robust constant modulus blind equalization algorithm is proposed. The error function of the original algorithm is improved and nonlinearly transformed, thus the affection of alpha-stable noise is effectively suppressed. Using shallow water acoustic channel, computer simulations were performed under Gaussian and alpha-stable noise respectively. The simulation results demonstrate that the new algorithm achieves the same convergence rate and lower residual intersymbol interference compared with the original algorithm in Gaussian noise environments. In alpha-stable noise environments, the original algorithm becomes unstable, while the proposed algorithm keeps robust and converges stably to the low intersymbol interference.

关键词： robust blind equalization constant modulus alphastable noise

作者: Jinming Li Jing Lu Junwei Zhao

作者单位: College of Marine, Northwestern Polytechnical University, Xian, China Department of Electronic Engineering, Engineering College of the People’s Armed Police Force, Xian,

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 1589-1592

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）