| An effective PN blind estimation reconstruction strategy to solve data reversions interference |
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| 引用本文： | 张一 Zhang Zhongzhao. An effective PN blind estimation reconstruction strategy to solve data reversions interference[J]. 高技术通讯(英文版), 2007, 13(2): 169-172 |
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| 作者姓名： | 张一 Zhang Zhongzhao |
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| 作者单位： | Communication Research Center, Harbin Institute of Technology, Harbin 150001, P.R.China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | In a direct spectrum （DS） system, the PN code can be estimated by analyzing the singular vectors of the received data matrix in order to blind despread in a non-cooperative context. But as there are informa-tion data reversions in the analyzed data matrix, some parts of the estimated PN code may be invertible to the original PN code, which may bring about problems in the following despreading process. In order to solve this problem, a method to well reconstruct the PN code is proposed. This method is based on power detection. The combination scheme which has the maximum power is the best combination scheme that is most suitable to the original PN code. Simulation results show that the method can reconstruct the PN code very well,even if the signal-to-noise ratio is low.
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| 关 键 词： | 探测方法 盲通道估计 数据干涉 通信 |
An effective PN blind estimation reconstruction strategy to solve data reversions interference |
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| Zhang Yi,Zhang Zhongzhao. An effective PN blind estimation reconstruction strategy to solve data reversions interference[J]. High Technology Letters, 2007, 13(2): 169-172 |
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| Authors: | Zhang Yi Zhang Zhongzhao |
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| Abstract: | In a direct spectrum (DS) system, the PN code can be estimated by analyzing the singular vectors of the received data matrix in order to blind despread in a non-cooperative context. But as there are information data reversions in the analyzed data matrix, some parts of the estimated PN code may be invertible to the original PN code, which may bring about problems in the following despreading process. In order to solve this problem, a method to well reconstruct the PN code is proposed. This method is based on power detection. The combination scheme which has the maximum power is the best combination scheme that is most suitable to the original PN code. Simulation results show that the method can reconstruct the PN code very well, even if the signal-to-noise ratio is low. |
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| Keywords: | blind despread singular vector estimation power detection |
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