A variable step size LMS equalization algorithm in the satellite communication system

Changhao Du, Xue Sun, Yixia Wang, Nan Lu

科研成果: 书/报告/会议事项章节会议稿件同行评审

3 引用 (Scopus)

摘要

Equalization algorithm has a great significance to overcome the inter-symbol interference (ISI) existing in the satellite communication system. But fixed step size (FSS) LMS equalization algorithms and traditional variable step size LMS (VSSLMS) equalization algorithms do not perform well in some aspects such as convergence speed. Therefore, a VSSLMS equalization algorithm based on logarithmic function is proposed. It establishes a nonlinear function relationship between step size and autocorrelation value of the error signal. It also introduces the smoothing factor and the previous step size to control the steady-state error with small fluctuations. Compared with the similar algorithms, the proposed algorithm performs better than those algorithms in aspects of anti-noise performance, convergence speed and tracking speed. The model of the satellite communication system is presented, and the proposed algorithm is applied to the adaptive equalizer in the model. The simulation result shows that the bit error rate (BER) performance of the system is effectively improved.

源语言英语
主期刊名Proceedings of the 2016 IEEE 11th Conference on Industrial Electronics and Applications, ICIEA 2016
出版商Institute of Electrical and Electronics Engineers Inc.
1557-1562
页数6
ISBN(电子版)9781509026050
DOI
出版状态已出版 - 19 10月 2016
活动11th IEEE Conference on Industrial Electronics and Applications, ICIEA 2016 - Hefei, 中国
期限: 5 6月 20167 6月 2016

出版系列

姓名Proceedings of the 2016 IEEE 11th Conference on Industrial Electronics and Applications, ICIEA 2016

会议

会议11th IEEE Conference on Industrial Electronics and Applications, ICIEA 2016
国家/地区中国
Hefei
时期5/06/167/06/16

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