| 一种基于DSP的任意功率谱随机信号产生器 |
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| 引用本文： | 孙恺,容太平.一种基于DSP的任意功率谱随机信号产生器[J].华中科技大学学报(自然科学版),2002,30(4):55-57. |
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| 作者姓名： | 孙恺 容太平 |
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| 作者单位： | 华中科技大学电子与信息工程系 |
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| 摘 要： | 从随机信号功率谱的定义出发，推导出功率谱满足给定数据的平稳随机信号的计算原理，在此基础上给出了一个基于高速DSP芯片的系统，作为从系统它可以同上位计算机通信，接收来自上位计算机的功率谱数据的控制参数，并通过数模转换器实时输出计算出的随机信号。
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| 关 键 词： | 随机信号 功率谱 数字信号处理器 DSP |
| 文章编号： | 1671-4512(2002)04-0055-03 |
| 修稿时间： | 2001年10月16 |
A DSP based system for generating random signal with specified power spectrum |
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| Sun Kai Rong Taiping Postgraduate, Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..A DSP based system for generating random signal with specified power spectrum[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2002,30(4):55-57. |
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| Authors: | Sun Kai Rong Taiping Postgraduate Dept of Electronics & Information Eng Huazhong Univ of Sci & Tech Wuhan China |
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| Affiliation: | Sun Kai Rong Taiping Postgraduate, Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | This paper presents the implementation of random signal generator with specified power spectrum. The definition of power spectrum for random signal is derived, and the formula needed in generating random signal for given power spectrum is deduced in this article. A DSP technology based system using this formula to generate random signal is presented. As a slavery system for PC, it is capable of communicating with PC so that it can receive control signal and power spectrum data from PC. The real time random signal is outputted through AD convertor and can be directly put into use. Seen in spectrum analyzer, the output signal is well fitted to specified data. This formula has no spectrum range limit so that the range of this system is determined only by the character of AD convertor. |
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| Keywords: | random signal power spectrum digital signal processor (DSP) |
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