结构风险最小化恒模半盲均衡器

doi:10.13190/jbupt.200905.93.369

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (5): 93-98.doi: 10.13190/jbupt.200905.93.369

结构风险最小化恒模半盲均衡器

宋恒1,毛忠阳1,王红星1,马时平2

(1.海军航空工程学院电子信息工程系, 山东烟台 264001; 2.空军工程大学工程学院, 西安 710038)

收稿日期:2009-01-19 修回日期:2009-07-09 出版日期:2009-10-28 发布日期:2009-10-28
通讯作者: 宋恒

Constant Modulus Semi-Blind Equalizer Based on Structure Risk Minimum Criterion

SONG Heng1,MAO Zhong-yang1,WANG Hong-xing1,MA Shi-ping2

(1. Department of Electronic Information Engineering, Naval Aeronautical and Astronautical University, Shandong Yantai 264001, China;
2. School of Engineering, Air Force Engineering University, Xi'an 710038, China)

Received:2009-01-19 Revised:2009-07-09 Online:2009-10-28 Published:2009-10-28
Contact: SONG Heng

摘要/Abstract

摘要：

针对在快衰落信道中自适应滤波器跟踪性能差的问题，结合容量控制和半盲技术的自适应滤
波原理，提出一种新的结构风险最小化恒模半盲均衡器（SCM-SBE）. 该方法在充分挖掘通
信信号中学习信息的同时，通过容量控制手段补充滤波器自身的结构信息，以学习信息量的
最大化从根源上提高滤波器的跟踪性能. 仿真结果表明，SCM-SBE可以在训练数据较少的条
件下保持良好的跟踪性能，在无线移动通信中具有一定的应用前景.

关键词: 均衡, 滤波器, 容量控制, 半盲, 恒模

Abstract:

According to the track performance of adaptive filters with poor performance in
rapid fading channel, an adaptive filter principle based on capability control a
nd semiblind technology is presented. And a semi-blind equalizer based on con
stant modulus characteristic and structure risk minimum (SCM-SRM) criterion is
designed. The information of communication signals learning should sufficiently be dug. On the other hand, the structure information of oneself of filters shoul
d also sufficiently be dug (by use of a capability control method). In a word, t
he track performance of filters is improved by maximizing amount of learning information. Simulation is carried out that compared with a typical recursive l
east squares equalizer and a constant modulus semi-blind equalizer, SCM-SBE has better track performance in much less training data, and adapts for wireless motion communications.

Key words: equalization, filter, capability control, semi-blind, constant modulus

宋恒1,毛忠阳1,王红星1,马时平2. 结构风险最小化恒模半盲均衡器[J]. 北京邮电大学学报, 2009, 32(5): 93-98.

SONG Heng1,MAO Zhong-yang1,WANG Hong-xing1,MA Shi-ping2. Constant Modulus Semi-Blind Equalizer Based on Structure Risk Minimum Criterion[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2009, 32(5): 93-98.

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结构风险最小化恒模半盲均衡器

Constant Modulus Semi-Blind Equalizer Based on Structure Risk Minimum Criterion

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