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

• Original Articles • Previous Articles

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 E-mail:lvxizai@126.com
Supported by:
吕喜在(1981-)，男，国防科技大学博士研究生，E-mail: lvxizai@126.com．

Abstract

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

CLC Number:

TN911

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

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