基于字频统计的子同步码盲检测方法研究

doi:10.3969/j.issn.1001-2400.2011.03.031

J4 ›› 2011, Vol. 38 ›› Issue (3): 189-196.doi: 10.3969/j.issn.1001-2400.2011.03.031

• 研究论文 • 上一篇

基于字频统计的子同步码盲检测方法研究

吕喜在；苏绍璟；黄芝平

(国防科学技术大学机电工程与自动化学院，湖南长沙 410073)

收稿日期:2010-09-26 出版日期:2011-06-20 发布日期:2011-07-14
通讯作者: 吕喜在

Research on blind detection of the sub synchronous sequence based on word frequency statistic

Lü Xizai；SU Shaojing；HUANG Zhiping

(College of Mechatronics Eng. and Automation, National Univ. of Defense Tech., Changsha 410073， China)

Received:2010-09-26 Online:2011-06-20 Published:2011-07-14
Contact: Lü Xizai
Supported by:
吕喜在(1981-)，男，国防科技大学博士研究生，E-mail: lvxizai@126.com．

摘要/Abstract

摘要：

为了获取数字通信中未知线路的帧同步信息，提出了一种子同步码盲检测方法．通过对帧同步问题进行建模，得出了不同字宽的字频统计中子同步码检出概率与数据长度的关系．据此关系，通过对原始数据进行字频统计并调整字宽和数据长度，实现了误码环境中具有任意比特起点的未知线路子同步码的全盲检测，从而使完整帧同步信息的获取成为可能．

关键词: 数字通信, 字频统计, 同步码, 盲检测

Abstract:

In order to get the frame synchronization information on the unknown lines in digital communication, a method of blind detecting sub synchronous sequence is presented. By modeling frame synchronization, the relationship between the probability of detecting the sub synchronous sequence and the length of data is gained in the word frequency statistics with different word widths. According to this relationship, the blind detecting sub synchronous sequence of unknown lines with any bit-start in error conditions is realized by conducting the word frequency statistic and adjusting the word width and data length, which makes it possible to get the whole frame synchronization information on unknown lines.

Key words: digital communication, word frequency statistic, synchronous sequence, blind detection

中图分类号:

TN911

吕喜在；苏绍璟；黄芝平. 基于字频统计的子同步码盲检测方法研究[J]. J4, 2011, 38(3): 189-196.

Lü Xizai；SU Shaojing；HUANG Zhiping. Research on blind detection of the sub synchronous sequence based on word frequency statistic[J]. J4, 2011, 38(3): 189-196.

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基于字频统计的子同步码盲检测方法研究

Research on blind detection of the sub synchronous sequence based on word frequency statistic

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