基于线性分组码的自同步扰码盲识别

doi:10.3969/j.issn.0255-8297.2015.02.007

应用科学学报 ›› 2015, Vol. 33 ›› Issue (2): 178-186.doi: 10.3969/j.issn.0255-8297.2015.02.007

基于线性分组码的自同步扰码盲识别

张旻1,2，吕全通1,2，朱宇轩3

1. 电子工程学院网络系，合肥230037
2. 安徽省电子制约技术重点实验室，合肥230037
3. 清华大学电子工程系，北京100084

收稿日期:2014-09-19 修回日期:2014-12-15 出版日期:2015-03-30 发布日期:2014-12-15
作者简介:张旻，教授，博导，研究方向：智能信息处理、通信信号处理，E-mail: dyzhangmin@163.com
基金资助:
国家自然科学基金(No.60972161)资助

Blind Recognition of Self-Synchronized Scrambler Based on Linear Block Code

ZHANG Min1,2, LÜ Quan-tong1,2, ZHU Yu-xuan3

1. Network Department, Institute of Electronic Engineering, Hefei 230037, China
2. Key Laboratory of Electronic Control technology, Hefei 230037, China
3. Department of Electronic Engineer, Tsinghua University, Beijing 100084, China

Received:2014-09-19 Revised:2014-12-15 Online:2015-03-30 Published:2014-12-15

摘要/Abstract

摘要： 针对加扰前信息序列为线性分组码情况下的自同步扰码盲识别问题，提出了一种有效的解决方法. 首先，从理论上分析了线性分组码与随机序列游程特性的差异，得出了扰码序列正确抽取与错误抽取时输出序列的游程特性的区别；然后，通过遍历寻找抽取后序列的游程比值与随机序列游程比值的欧几里得距离的最大值方式实现了自同步扰码多项式的盲识别.仿真实验验证了理论分析的正确性，解决了0、1 均衡情况下的线性分组码自同步扰码盲识别问题，具有一定的工程应用价值.

关键词: 自同步扰码, 盲识别, 线性分组码, 游程特性, 欧几里得距离

Abstract: A blind recognition method of self-synchronous scrambler based on the linear
block code with unbiased information source is proposed. Different run characteristics of
the linear block code and random sequence are analyzed, leading to the conclusion that the
run feature of correctly extracted scrambler sequence differs from that of the wrong one.
A polynomial of the scrambler is determined with maximum value search in all possible
Euclidean distances between the run ratios of extracted and random sequences. Experiments
and simulation results show correctness of the theoretical analysis. Blind recognition
of self-synchronous scrambler after the linear block code with unbiased information source
can be realized, useful in engineering application.

Key words: self-synchronized scrambler, blind recognition, linear block code, run characteristic, Euclidean distance

中图分类号:

TP391

张旻1,2，吕全通1,2，朱宇轩3. 基于线性分组码的自同步扰码盲识别[J]. 应用科学学报, 2015, 33(2): 178-186.

ZHANG Min1,2, Lü Quan-tong1,2, ZHU Yu-xuan3. Blind Recognition of Self-Synchronized Scrambler Based on Linear Block Code[J]. Journal of Applied Sciences, 2015, 33(2): 178-186.

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基于线性分组码的自同步扰码盲识别

Blind Recognition of Self-Synchronized Scrambler Based on Linear Block Code

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