| 无扩频矩阵知识二维扩频系统的盲同步 |
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| 引用本文： | 沈莹,唐友喜.无扩频矩阵知识二维扩频系统的盲同步[J].电子科技大学学报（自然科学版）,2006,35(6):861-864. |
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| 作者姓名： | 沈莹 唐友喜 |
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| 作者单位： | 电子科技大学通信与信息工程学院,成都,610054;电子科技大学通信与信息工程学院,成都,610054 |
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| 基金项目： | 国家自然科学基金资助项目（60272009.60390540-3）.教育部博士点基金资助项目（20020614001） |
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| 摘 要： | 针对加性白高斯噪声信道,考虑未知二维扩频矩阵的条件下,提出了一种二维扩频系统的时频同步方法。该方法利用二维扩频矩阵周期性重复的特点,先估计出频率偏差,再通过滑动暂存窗求相关矩阵最大特征值,完成信号的时间同步。计算机仿真结果验证了该方法的有效性。
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| 关 键 词： | 二维扩频 二维扩频矩阵 盲同步 时间同步 频率同步 相关矩阵 |
| 收稿时间： | 2004-08-25 |
| 修稿时间： | 2004-08-25 |
Blind Synchronization of Two-Dimensional Spread Spectrum System without Knowledge of Spread Spectrum Matrix |
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| SHENG Ying,TANG You-xi.Blind Synchronization of Two-Dimensional Spread Spectrum System without Knowledge of Spread Spectrum Matrix[J].Journal of University of Electronic Science and Technology of China,2006,35(6):861-864. |
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| Authors: | SHENG Ying TANG You-xi |
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| Affiliation: | 1.School of Communication and Information Engineering,Univ. of Electron. Sci. & Tech. of China Chengdu 610054 |
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| Abstract: | In Additive White Gaussian Noise (AWGN) channel, we introduce a method for synchronization of symbol timing and frequency for two-dimensional spread spectrum system without prior knowledge of spread spectrum matrix. Based on the periodical characteristic of the two-dimensional spread spectrum matrix, the method estimates the frequency offset, and then synchronizes the symbol timing by moving the position of data-storage window to calculate the maximum eigenvalue of correlation matrix. Computer simulations demonstrate the efficiency of this method. |
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| Keywords: | two dimensional spread spectrum two diliensional spread spectrum matrix time synchronization frequency synchronization correlation matrix |
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