| 频偏条件下基于循环平稳的定时估计算法 |
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| 引用本文： | 王娜,张邦宁,郭道省,张国敏.频偏条件下基于循环平稳的定时估计算法[J].电子科技大学学报(社会科学版),2008(2). |
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| 作者姓名： | 王娜 张邦宁 郭道省 张国敏 |
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| 作者单位： | 解放军理工大学理学院;解放军理工大学通信工程学院;解放军理工大学指挥自动化学院 南京; |
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| 基金项目： | 部级预研基金(51421010504JB3801) |
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| 摘 要： | 研究了利用信号的循环平稳统计特性提取定时误差的估计算法,由于性能的优良是建立在大量统计信息的基础上,因而所需的观测时间长度较大,同时算法受频偏的影响也随观测时间长度的增大而增大。针对该特点,研究了频偏对算法性能的影响及存在频偏环境下算法中参数的选择。仿真结果表明,频偏对该类算法的影响不可忽略,尤其是在观测时间长度较大的情况下。实用中应结合具体频偏大小,合理选择参数取值。
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| 关 键 词： | 循环平稳 频偏 观测时间长度 定时误差 |
Cyclostationarity-Based Timing Estimation Considering the Frequency Offset |
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| WANG Na,ZHANG Bang-ning,GUO Dao-sheng, ZHANG Guo-min.Cyclostationarity-Based Timing Estimation Considering the Frequency Offset[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2008(2). |
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| Authors: | WANG Na ZHANG Bang-ning GUO Dao-sheng ZHANG Guo-min |
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| Institution: | WANG Na1,ZHANG Bang-ning2,GUO Dao-sheng2,, ZHANG Guo-min3 (1. Institute of Sciences,PLA University of Electronic Science , Technology of China Nanjing 211101,2. Institute of Communication Engineering,PLA University of Electronic Science , Technology of China Nanjing 210007,3. Institute of Comm, Automation,PLA University of Electronic Science , Technology of China Nanjing 210007) |
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| Abstract: | Symbol timing delay can be estimated by employing cyclostationarity features of signals. The super performance of estimators is based on large numbers of statistical information. Thus,the observation interval is required to be quite long. However,the performance of estimators become complex when the frequency offset is considered. Due to this problem,the effect of frequency offset and the choice of parameters under this circumstance are studied. Simulation results show that the effect of frequency offset ca... |
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| Keywords: | cyclostationarity frequency offset observation interval timing delay |
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