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| Blind reconnaissance of the pseudo-random sequence in DS/SS signal with negative SNR | |
| 作者单位： | HUANG XianGao（School of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu 6100541, China;College of Engineering, Shantou University, Shantou 515063, China） ; HUANG Wei（Computer Center, Chang'an University, Xi'an 710064, China） ; WANG Chao（Research Institute of Electronic, ZhongXing, Xi'an 710061, China） ; L(U) ZeJun （Southwest China Institute of Electronic Technology, Chengdu 610036, China） ; HU YanHua（College of Engineering, Shantou University, Shantou 515063, China） ; |
| 基金项目： | the National Defence Key Foundation of China (Grant No. 614144) |
| 摘 要： | This paper introduces a new theory and algorithm that can be used in blind detection of the carrier wave signal and the pseudo-random sequence of the direct sequence spread spectrum (DS/SS) signal with negative SNR. First, without any a priori knowledge of the DS/SS signal, the carrier wave signal can be detected from DS/SS signal with negative SNR by using stochastic differential equations and energy detection method. Based on this, the pseudo-random sequence can also be blindly detected in DS/SS signal with negative SNR by reducing noise of the nonlinear signal and the algorithm of wavelet multiscale decomposition algorithm. Finally, the computer simulation shows that we can detect the carrier wave signal with SNR=-27 dB and the pseudo-random sequence under error code ratio 10-4 with SNR =-10 dB. |
| 收稿时间： | 30 April 2006 |
| 修稿时间： | 24 October 2006 |
Blind reconnaissance of the pseudo-random sequence in DS/SS signal with negative SNR |
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| Authors: | Huang XianGao Huang Wei Wang Chao Lü ZeJun Hu YanHua |
| Affiliation: | 1. School of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu 6100541, China;College of Engineering, Shantou University, Shantou 515063, China 2. Computer Center, Chang'an University, Xi'an 710064, China 3. Research Institute of Electronic, ZhongXing, Xi'an 710061, China 4. Southwest China Institute of Electronic Technology, Chengdu 610036, China 5. College of Engineering, Shantou University, Shantou 515063, China |
| Abstract: | This paper introduces a new theory and algorithm that can be used in blind detection of the carrier wave signal and the pseudo-random sequence of the direct sequence spread spectrum (DS/SS) signal with negative SNR. First, without any a priori knowledge of the DS/SS signal, the carrier wave signal can be detected from DS/SS signal with negative SNR by using stochastic differential equations and energy detection method. Based on this, the pseudo-random sequence can also be blindly detected in DS/SS signal with negative SNR by reducing noise of the nonlinear signal and the algorithm of wavelet multiscale decomposition algorithm. Finally, the computer simulation shows that we can detect the carrier wave signal with SNR=-27 dB and the pseudo-random sequence under error code ratio 10-4 with SNR =-10 dB. |
| Keywords: | DS/SS signal SNR the pseudo-random sequence reconnaissance detection |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ | |
