Journal of Electronics (China)

, Volume 5, Issue 1, pp 1–6 | Cite as

A new implementation for DFT based on delta modulation

  • Tang Kaijun
  • Xiang Jingcheng
  • Huang Shunji


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 bandlimited 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.

Key words

Information theory Signal processing Delta modulation DFT 


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Copyright information

© Science Press 1988

Authors and Affiliations

  • Tang Kaijun
    • 1
  • Xiang Jingcheng
    • 1
  • Huang Shunji
    • 1
  1. 1.Department of Electronic EngineeringChengdu Institute of Radio EngineeringChengduChina

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