Frequency Domain Constant Modulus Algorithm Based on Fractionally Spaced Blind Equalizer

摘要：

Aiming at the disadvantages of large mean square error(MSE) and slow convergence rate of Constant Modulus Algorithm(CMA), a frequency domain constant modulus algorithm based on fractionally spaced blind equalizer(FS FCMA) is proposed. In this proposed algorithm, fractionally spaced blind equalizer is used to avoid the spectrum aliasing caused by the sub-sampling and decrease the MSE effectively, and FFT technique and overlapping retention algorithm is employed for realizing the frequency domain constant modulus algorithm to improve the convergence performance of equalizer and to reduce the computational complexity greatly. The FS-FCMA has smaller MSE and faster convergence rate comparison with the constant modulus algorithm in time domain(TCMA) and constant modulus algorithm in time domain based on fractionally spaced blind equalizer(FS-TCMA). The good performance was simulated using underwater acoustic channel.

关键词： constant modulus algorithm fractionally spaced equalizer FFT overlapping retention algorithm

作者: Guo Yecai Yang Chao Lin Rengang

作者单位: Department of Electrical and Information Engineering, Anhui University of Science and Technology, Hu Department of Electrical and Information Engineering, Anhui University of Science and Technology, Hu

会议类型: 国际会议

会议名称: 2009 International Workshop on Information Security and Application(2009 信息安全与应用国际研讨会)

会议地点: 青岛

会议语种:英文

页码: 86-89

在线出版日期: 2009-11-21（万方平台首次上网日期，不代表论文的发表时间）