Full-parallel arbitrary multiplying power variable sampling system

Through the fully parallel arbitrary magnification variable sampling system, the problems of small change ratios and hardware limitation in variable sampling technology are solved, and accurate resampling of GHz-level signals is realized to meet the high requirements of private network communication.

CN120389753APending Publication Date: 2025-07-29UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Application Number
CN202510462568.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-14
Publication Date
2025-07-29

AI Technical Summary

Technical Problem

The variable sampling technology in the prior art has problems such as small change ratio, limited serial processing hardware, and only integer multiple processing, which cannot meet the high requirements for signal sampling rate changes in private network communication.

Method used

The fully parallel arbitrary magnification variable sampling system is adopted, including an upsampling system and a downsampling system. The upsampling filter, upsampling interpolate, downsampling filter, decimator and downsampling interpolate are used to realize 4-channel parallel processing and sampling of any decimal times, and the error is reduced through polynomial interpolation and half-band filter.

Benefits of technology

It realizes accurate resampling of any magnification of GHz-level signals, improves processing speed and interpolation accuracy, has strong anti-aliasing ability, and is suitable for high-demand fields such as private network communication.

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Abstract

The invention provides a full-parallel arbitrary multiplying power variable sampling system, and belongs to the technical field of signal processing. The system comprises an up-sampling system and a down-sampling system, the up-sampling system is used for a transmitter and comprises an up-sampling filter and an up-sampling interpolator, and the down-sampling system is used for a receiver and comprises a down-sampling filter, an extractor and a down-sampling interpolator; the up-sampling system can process four paths of input signals in parallel, and four paths of output signals are obtained after the four paths of input signals are processed in parallel; the down-sampling system is formed by cascading a plurality of down-sampling filters and an extractor, an extraction module is responsible for down-sampling of integer 2n times, and a decimal interpolator is connected behind the extractor to realize down-sampling processing of any decimal times. According to the invention, the limitation of traditional integer or simple fractional multiple sampling is broken through, arbitrary-multiplying-power precise resampling of the GHz-level signal is realized, the processing speed and the interpolation precision are obviously improved, the error is low, the anti-aliasing capability is strong, and the method is suitable for the high-requirement fields such as private network communication.
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