Journal of Information Processing Systems

Korea Information Processing Society (한국정보처리학회)
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Analysis of DDS Sampling Method and Harmonic Composition

  • Zhi-lai Zhang (Hebei key Laboratory of Optical Fiber Biosensing and Communication Devices (SZX2022010), Institute of Information Technology, Handan University) ;
  • Shao-jun Jiang (Hebei key Laboratory of Optical Fiber Biosensing and Communication Devices (SZX2022010), Institute of Information Technology, Handan University) ;
  • Li-li Liang (Hebei key Laboratory of Optical Fiber Biosensing and Communication Devices (SZX2022010), Institute of Information Technology, Handan University)
  • Received : 2021.09.03
  • Accepted : 2022.10.30
  • Published : 2023.04.30
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Abstract

Through theoretical proof and algorithm design, this paper numerically demonstrates that the three sampling methods of DDS are equivalent in amplitude-frequency characteristics. Depending on theoretical analysis, the article obtains the conclusion that 2 points are optimal when sampling at 2, 3, and 4 points. Built on the data results, this paper obtains the fractional form of the amplitude and phase of the DDS sampled signal; in addition, this paper also obtains the design parameters of the DDS post-stage filter. It also gives a control method for the calculation error when addressing this issue.

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Acknowledgement

This study was funded by the Youth Fund of the Chinese Natural Science Foundation of China (61805106).

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