| 基于矩阵变换法的DSSS信号盲估计 |
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| 引用本文： | 赵冰,杨翠娥,郭黎利,朱朝晖. 基于矩阵变换法的DSSS信号盲估计[J]. 佳木斯大学学报, 2007, 25(2): 222-224 |
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| 作者姓名： | 赵冰 杨翠娥 郭黎利 朱朝晖 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院,黑龙江,哈尔滨,150001;黑龙江省无线电监测站,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家无线电监测中心立项项目 |
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| 摘 要： | 提出一种基于矩阵变换法的简便盲估计算法.此算法在已知PN码速率及PN码周期已知的情况下,对基带扩频信号进行分段处理和累加运算以消除噪声的影响,进而实现PN码的盲估计,并在此基础上分析了使用不同m序列作扩频序列时的系统性能.Matlab仿真结果表明此算法可以在SNR低于-18dB的环境下正常工作.
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| 关 键 词： | DSSS信号 矩阵变换法 同步函数矩阵 PN码序列 |
| 文章编号： | 1008-1402（2007）02-0222-03 |
| 收稿时间： | 2007-02-06 |
| 修稿时间： | 2007-02-06 |
Blind Estimation of the DSSS Signals Using Matrix Transform |
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| ZHAO Bing,YANG Cui-e,GUO Li-li,ZHU Zhao-hui. Blind Estimation of the DSSS Signals Using Matrix Transform[J]. Journal of Jiamusi University(Natural Science Edition), 2007, 25(2): 222-224 |
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| Authors: | ZHAO Bing YANG Cui-e GUO Li-li ZHU Zhao-hui |
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| Affiliation: | 1.College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001, China; 2.The Radio Survillance Station of Province,Harbin 150001, China |
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| Abstract: | A simple blind estimate algorithm is proposed based on matrix transform.The chip rate of the PN code and PN code period must be known.The received signals are divided into vectors to deal with and cumulate to eliminate the effect of noise and estimate the PN code.The system performances which use different m sequences have been analyzed.The Matlab simulation results show that this algorithm can work well on SNR below-18dB. |
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| Keywords: | DSSS signal matrix transform synchronization function PN code sequence |
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