| A NEW IMEMENTATION FOR DFT BASED ON DELTA MODULATION |
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| 作者姓名： | 唐开筠 向敬成 黄顺吉 |
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| 作者单位： | Department of Electronic Engineering Chengdu Institute of Radio Engineering，Department of Electronic Engineering，Chengdu Institute of Radio Engineering，Department of Electronic Engineering，Chengdu Institute of Radio Engineering |
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| 基金项目： | This Project is supported by the National Natural Science Fundation of China. |
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| 摘 要： | This paper proposes a new implementation for DFT based on delta modulation which isdifferent from the conventional PCM implementation.The hardware structure of the method is multiplier-free,simple and low in cost.Theoretical analyses show that its SNR can approach conventional one's,forinstance,FFT.Computer simulations demonstrate that for deterministic signals,the results agree withtheoretical analyses.For handlimited Gaussian signals,we can still get results similar to the conventionalDFT's if selecting the step size suitably.A hardware structure which simply consists of ROM,an adder andother auxiliary circuits is also given.
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A NEW IMEMENTATION FOR DFT BASED ON DELTA MODULATION |
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| Tang Kaijun Xiang Jingcheng Huang Shunji.A NEW IMEMENTATION FOR DFT BASED ON DELTA MODULATION[J].Journal of Electronics,1988(1). |
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| Authors: | Tang Kaijun Xiang Jingcheng Huang Shunji |
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| Abstract: | This paper proposes a new implementation for DFT based on delta modulation which is different from the conventional PCM implementation.The hardware structure of the method is multiplier- free,simple and low in cost.Theoretical analyses show that its SNR can approach conventional one's,for instance,FFT.Computer simulations demonstrate that for deterministic signals,the results agree with theoretical analyses.For handlimited Gaussian signals,we can still get results similar to the conventional DFT's if selecting the step size suitably.A hardware structure which simply consists of ROM,an adder and other auxiliary circuits is also given. |
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| Keywords: | Information theory Signal processing Delta modulation DFT |
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