Title：An Error Calibration Method for Compression Sampling Analog - to - Digital Converter
Country：China
Patent No.：201610031498.7
Legal Status：Authorized
Inventor：Dongmei Li, Chenxi Han, Jingwei Wei
Assignee：Tsinghua University; Research Institute of Tsinghua University in Shenzhen
Address：Tsinghua University,Haidian District Beijing 100084, China
Filing Date：2016-01-18
Issue Date：2018-10-19
Abstract：
The invention relates to an error calibration method of a compression sampling analog-to-digital converter and belongs to the field of mixing signal integrated circuit designs. For inevitable non-ideal factors and effects on following signal recovery in circuit realization in a compression sampling analog-to-digital converter, the invention puts forwards an idea of adding error estimation and signal calibration on the basis of a traditional signal processing process and provides a signal processing process including signal observation, error estimation, signal calibration and signal recovery. Different error models can be set according to different structures; hardware errors are estimated; hardware observation signals are calibrated; and then the calibrated signals are sent to a recovery module. Thus, performance degradation caused by the non-ideal factors in the compression sampling analog-to-digital converter can be effectively eliminated; and sampling signals are calibrated before the recovery, recovery effects of the signals can be improved and a better system realization effect can be achieved.
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