Method for non-integer multiple sampling rate conversion based on digital matched filter
By calculating the phase adjustment value and accuracy using a digital matched filter, the sampling rate conversion process of the digital demodulator is simplified, solving the problems of design complexity and resource waste in traditional methods, and achieving reduced hardware costs and improved flexibility.
CN117134743BActive Publication Date: 2026-07-03NANJING UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF SCI & TECH
- Filing Date
- 2022-05-20
- Publication Date
- 2026-07-03
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Figure CN117134743B_ABST
Abstract
This invention discloses a method for non-integer multiple sampling rate transformation based on a digital matched filter. The method includes the following steps: calculating the phase adjustment value related to the non-integer multiple sampling rate transformation based on the input-output sampling frequency relationship; determining the phase adjustment accuracy based on the input-output sampling frequency relationship; designing a digital filter based on the phase adjustment accuracy to obtain the digital matched filter impulse response value; and using the phase adjustment value as an index of the digital matched filter impulse response value to perform matched filtering calculations, thereby realizing the non-integer multiple sampling rate transformation. This invention significantly reduces the complexity of digital filter design, saves development time and costs, and offers high flexibility and effectiveness for systems requiring fractional multiple transformation and matched filters in communication systems.
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