| 基于循环自相关的符号率估计 |
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| 引用本文： | 汤素华,戴旭初,徐佩霞,方晓青. 基于循环自相关的符号率估计[J]. 兵工学报, 2005, 26(2): 251-255 |
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| 作者姓名： | 汤素华 戴旭初 徐佩霞 方晓青 |
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| 作者单位： | 中国科学技术大学,电子工程与信息科学系,安徽,合肥,230027;中国科学技术大学,电子工程与信息科学系,安徽,合肥,230027;中国科学技术大学,电子工程与信息科学系,安徽,合肥,230027;中国科学技术大学,电子工程与信息科学系,安徽,合肥,230027 |
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| 摘 要： | 深入分析了数字通信中常用调制信号的循环自相关特性，研究循环自相关同符号率、延时的关系，并由此导出了一种估计数字信号符号率的新方法。理论分析和仿真结果表明，新的方法不仅具有较小的计算量，而且估计的精度较高，基本不受信噪比的影响。提出的新方法可用于调制方式识别与调制信号的盲解调，有一定的实用价值。
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| 关 键 词： | 通信技术 数字调制 符号率估计 循环自相关 循环平稳 |
| 文章编号： | 1000-1093(2005)02-0251-05 |
Cyclostationarity-based Symbol Rate Estimation |
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| TANG Su-hua,DAI Xu-chu,XU Pei-xia,FANG Xiao-qing. Cyclostationarity-based Symbol Rate Estimation[J]. Acta Armamentarii, 2005, 26(2): 251-255 |
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| Authors: | TANG Su-hua DAI Xu-chu XU Pei-xia FANG Xiao-qing |
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| Affiliation: | Department of Electronic Engineering and Information science,University of science and Technology of China, Hefei, Anhui 230027，China |
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| Abstract: | Cyclic autocorrelation of common digital modulations was investigated, and the relationship between cyclic autocorrelation and delay as well as symbol rate was deduced, then a new estimation algorithm for symbol rates was presented in this paper. Theoretical analyses and simulations show that this new estimation method is characterized by lower computational complexity, less estimation error and independence of noise. The proposed algorithm is of practical value in modulation recognition and blind demodulation. |
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| Keywords: | communication technique digital modulation symbol rate estimation cyclic autocorrelation cyclostationarity |
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