| 基于DSP的实时高斯白噪声产生方案 |
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| 引用本文： | 周伟,范云霞,门爱东. 基于DSP的实时高斯白噪声产生方案[J]. 无线电工程, 2006, 36(10): 56-58 |
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| 作者姓名： | 周伟 范云霞 门爱东 |
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| 作者单位： | 北京邮电大学,电信工程学院,北京,100876 |
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| 摘 要： | 基于浮点型DSP的结构特点,提出了一种实时高斯白噪声产生方案。核心算法采用Wichman.B.A、Hill.I.D提出的组合线性同余法,先生成均匀分布随机数再利用函数变换最终得到高斯白噪声,并对该算法进行理论分析,从假设检验和物理测量的角度同其他方案对比,结果表明该算法性能良好。实现时采用2套种子数的方案进一步提高精度,通过优化DSP代码达到实时要求。应用时通过输入不同的方差值,可获得不同信噪比的数据流。
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| 关 键 词： | 高斯白噪声 组合线性同余法 函数变换 DSP |
| 收稿时间： | 2005-12-16 |
| 修稿时间： | 2005-12-16 |
A DSP-based System for Generating Gaussian Noise |
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| ZHOU Wei,FAN Yun-xia,MEN Ai-dong. A DSP-based System for Generating Gaussian Noise[J]. Radio Engineering of China, 2006, 36(10): 56-58 |
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| Authors: | ZHOU Wei FAN Yun-xia MEN Ai-dong |
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| Affiliation: | School of Telecommunication Engineering, Beijing University of Post and Telecommunications, Beijing 100876, China |
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| Abstract: | A method for generating Gaussian noise using DSP was introduced.The algorithm was a combination linear congruency generator(LCG)proposed by Wichman.B.A and Hill.I.D.Compared with others,the algorithm provides better performance.When implementing this algorithm,two sorts of seeds were adopted in order to achieve better precision.When using this system,inputting different variance could generate the data streams of different R SN value. |
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| Keywords: | DSP |
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