逐幸存序列算法引导的快速盲均衡算法

doi:10.3969/j.issn.1001-2400.2013.02.032

J4 ›› 2013, Vol. 40 ›› Issue (2): 201-206.doi: 10.3969/j.issn.1001-2400.2013.02.032

逐幸存序列算法引导的快速盲均衡算法

赵良^1,2;汪春梅³;孙洪波³

(1. 国防科技大学航天与材料工程学院，湖南长沙 410073;
2. 空间物理重点实验室，北京 100076;
3. 上海师范大学电子工程系，上海 200234)

收稿日期:2012-10-01 出版日期:2013-04-20 发布日期:2013-05-22
通讯作者: 赵良
作者简介:赵良(1974-)，男，国防科技大学博士研究生，E-mail: imu-zhl@163.com．
基金资助:
国家自然科学基金资助项目(61071085)

Fast blind equalization algorithm based on PSP

ZHAO Liang^1,2;WANG Chunmei³;SUN Hongbo³

(1. Aerospace and Materials Eng. College of National Univ. of Defense Tech., Changsha 410073， China;
2. Lab. of Science and Tech. on Space Physics Tech., Beijing 100076， China;
3. Dept. of Electronic Eng., Shanghai Normal Univ., Shanghai 200234， China)

Received:2012-10-01 Online:2013-04-20 Published:2013-05-22
Contact: ZHAO Liang

摘要/Abstract

摘要：

传统的盲均衡算法无法满足信号快速均衡的要求，限制了这类算法在突发信号通信中的应用．逐幸存序列算法具有信道跟踪性能好，无判决延迟的特点，但计算量较大，难以实现实时处理．本文提出利用逐幸存序列算法实现信道参数的快速跟踪，再通过非最小相位求逆和FIR逼近联合的方法得到线性均衡器系数，之后切换到DD-LMS算法，实现信号的快速盲均衡，为盲均衡算法在突发信号通信中的应用提供了有效的方法．

关键词: 快速盲均衡, 逐幸存序列算法, 非最小相位求逆, FIR逼近, DD-LMS

Abstract:

The usage of conventional blind equalization algorithm is limited in the application of burst signal communication due to its dissatisfaction of fast equalization. Per-survivor processing (PSP) exhibits good performance of channel-tracking and solves the problem of decision delay, but it increases the computational complexity. In this paper, PSP is applied to realize the fast tracking of the channel parameter and the coefficients of the linear equalizer are obtained by combining the inverse non-minimum phase with FIR approximation methods. Then this algorithm may be switched over to DD-LMS to achieve fast blind equalization. Simulation results indicate that the algorithm is valid for the application of blind equalization in burst signal communication.

Key words: fast blind equalization, PSP, inverse non-minimum phase, FIR approximation, DD-LMS

中图分类号:

TN911.7

赵良;汪春梅;孙洪波. 逐幸存序列算法引导的快速盲均衡算法[J]. J4, 2013, 40(2): 201-206.

ZHAO Liang;WANG Chunmei;SUN Hongbo. Fast blind equalization algorithm based on PSP[J]. J4, 2013, 40(2): 201-206.

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逐幸存序列算法引导的快速盲均衡算法

Fast blind equalization algorithm based on PSP

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