Method and device for digital down converter and filtering extraction
A digital down-conversion and digital signal technology, applied in the fields of filter extraction and digital down-conversion, can solve the problems of high computational complexity, low computational accuracy, poor real-time performance, etc., to reduce computational complexity, reduce requirements and power consumption, and improve The effect of stability
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[0038] The core idea of the present invention is: by performing multi-phase decomposition processing on the signal, the requirements on the performance of the hardware processor and the power consumption are reduced; The output branch signal to be extracted is discarded to obtain a digital down-conversion signal, which reduces the level of the pipeline, reduces the complexity of the operation, improves the stability of the processor, and effectively improves the accuracy and real-time performance of the operation.
[0039] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0040] In order to realize the purpose of the invention of the present invention, the present invention has designed a kind of filter extraction circuit, the input and output equation of this filter extraction circuit can be written as Y (n / m)×1 =B (n / m)×j h j×j A j×n x n×1 form, where Y (n / m)×1 ...
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