Scrambler blind recognition method based on soft information

被引：0
|
作者：
Chen Z.-L. [1 ]
Peng H. [1 ]
Gong K.-X. [1 ]
Yu P.-D. [1 ]
机构：
[1] School of Information Systems Engineering, PLA Information Engineering University, Zhengzhou
来源：
| 1600年 / Editorial Board of Journal on Communications卷 / 38期
基金：
中国国家自然科学基金;
关键词：
Anti-noise performance; Conformity degree; Cost function; Scrambler blind recognition; Soft information;
D O I：
10.11959/j.issn.1000-436x.2017043
中图分类号：
学科分类号：
摘要：
Two scrambler blind recognition methods based on soft information were proposed for received signal in non-cooperative ways. The first method established a cost function of the scrambler coefficients by using the soft information, and adopted the optimization theory of real number field for positive solution. So it didn't need to traverse the closed set of test polynomial any more. The second method built conformity degree concept with the soft information, and used the size of conformity of each test scrambler polynomial as the discriminant criteria. So it made more full use of the received information compared to the hard sentence recognition algorithm. Simulation results show that the first method can shorten the recognition time of a synchronous scrambler polynomial from 5 min 18 s to 8 s compared with the traversal method put forward by Cluzeau, and the second method has 2 dB SNR gain when to achieve the relatively high accuracy compared with the hard sentence recognition algorithm. © 2017, Editorial Board of Journal on Communications. All right reserved.
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页码：174 / 182
页数：8
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