| CDMA抗干扰微分相关时延估计算法研究 |
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| 引用本文： | 史英春,钟子发,杨俊安,张硕. CDMA抗干扰微分相关时延估计算法研究[J]. 电子科技大学学报(社会科学版), 2008, 0(2) |
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| 作者姓名： | 史英春 钟子发 杨俊安 张硕 |
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| 作者单位： | 解放军电子工程学院309研究室;解放军电子工程学院信息系;解放军电子工程学院309研究室 合肥; |
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| 摘 要： | 基于微分相关技术,提出了一种简单有效的DS-CDMA时延估计方法,在获取期望用户导频信道的前提下,通过选取适当的时间间隔,可以消除采样数据相关矩阵中与期望用户不相关的干扰和噪声。仿真结果表明,与常规实验估计算法相比,该方法具有更好的干扰抑制性能和更大的正确捕获概率。
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| 关 键 词： | 时延估计 微分相关 匹配滤波 多重信号分类算法 |
Study on Anti-Interference Code Timing Estimate Algorithms of CDMA Based on Differential Correlation Technology |
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| SHI Ying-chun,ZHONG Zi-fa,YANG Jun-an,, ZHANG Shuo. Study on Anti-Interference Code Timing Estimate Algorithms of CDMA Based on Differential Correlation Technology[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(2) |
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| Authors: | SHI Ying-chun ZHONG Zi-fa YANG Jun-an ZHANG Shuo |
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| Affiliation: | SHI Ying-chun1,ZHONG Zi-fa2,YANG Jun-an1,, ZHANG Shuo1 (1. 309 Research Room,Electronic Engineering Institute of PLA Hefei 230037,2. Information Department,Electronic Engineering Institute of PLA Hefei 230037) |
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| Abstract: | In this paper,we propose aimple and efficient algorithm for code timing acquisition in direct-sequence code-division multiple-access communication system. The essential assumption is that an unmodulated pilot channel is available for the desired user. Then the correlation matrix of sampled data,where the suitable time lag is selected,contains the timing information only of desired user,while the contributions of uncorrelated interferences and noise are suppressed out. The experiment results show that more i... |
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| Keywords: | code timing estimate differential correlation matched filter MUSIC |
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