Data reconstruction method and circuit based on fourier transform, and use thereof

By using Fourier transform data reconstruction methods and circuits, the signal integrity problem in high-speed signal transmission was solved, enabling effective transmission and measurement of high-bandwidth signals and improving the system's signal measurability and data rate.

WO2026129853A1PCT designated stage Publication Date: 2026-06-25XIDIAN UNIV
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
XIDIAN UNIV
Filing Date
2025-10-23
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing high-speed signal transmission systems suffer from signal integrity issues such as jitter, crosstalk, and inter-symbol interference caused by channel loss, making it difficult to achieve effective transmission and measurement of high-bandwidth signals.

Method used

A data reconstruction method and circuit based on Fourier transform are adopted. Orthogonal clocks are generated for mixing, Fourier coefficients are extracted using a low-pass filter, and the amplitude and phase angle of the spectral components are calculated to reconstruct the signal and improve signal measurability.

Benefits of technology

It significantly improves the signal measurability of high-bandwidth signal transmission systems, avoids the bandwidth problem across the entire frequency range, and improves data transmission rate and measurement efficiency.

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Abstract

Disclosed in the present invention are a data reconstruction method and circuit based on Fourier transform, and the use thereof. The circuit comprises: a clock generator, which is used for providing M groups of quadrature clocks required for mixing; a mixer, which is used for mixing an input periodic signal with the M groups of quadrature clocks to obtain M groups of intermediate frequency output signals; a low-pass filter, which is used for obtaining, on the basis of mixer outputs, a corresponding direct current voltage, and recording same as a coefficient of the Fourier transform; and a Fourier operation module, which performs Fourier mathematical operations on the coefficient of the Fourier transform to obtain a reconstructed signal. The data reconstruction method based on Fourier transform in the present invention can reconstruct high-bandwidth signals by means of sequential single-frequency-point mixing, which avoids the bandwidth challenge of simultaneously detecting a full frequency range, and greatly improves signal observability in a high-bandwidth signal transmission system.
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