Method and apparatus for signal processing
AssigneeDatang Mobile Communications Equipment Co., Ltd.
InventorQinghua LI
Life of this patent
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Abstract
A method and an apparatus for signal processing: implementing step-by-step orthogonal decomposition of an original signal to be inputted; on the basis of the number of layers of orthogonal decomposition and the edge high frequency bandwidth of the original signal after orthogonal decomposition, generating a finite-length unit impulse response FIR filter; using the FIR filter to filter the edge high-frequency signal of the original signal; and, after passing the signal obtained after filtering and the low frequency signal obtained at each stage of orthogonal decomposition through an orthogonal filter bank, implementing signal synthesis processing.
Claims19
A method for signal processing, comprising:
- orthogonally decomposing an original input signal by layer;
- generating a finite impulse response (FIR) filter according to number of layers of orthogonal decomposition and edge high-frequency bandwidth of the original input signal after the orthogonal decomposition;
- filtering an edge high-frequency signal of the original input signal by using the FIR filter;
- and
- inputting a signal obtained through the filtering and one or more low-frequency signals obtained through orthogonal decomposition of each layer into orthogonal filters and then combining signals output by the orthogonal filters.
An apparatus for signal processing, comprising:
- at least one processing unit;
- and
- at least one storage unit storing instructions;
- wherein the at least one processing unit is configured to execute instructions to:
- decompose an original input signal orthogonally by layer;
- generate an FIR filter according to number of layers of orthogonal decomposition and edge high-frequency bandwidth of the original input signal after the orthogonal decomposition;
- filter an edge high-frequency signal of the original input signal by using the FIR filter;
- and
- input a signal obtained through the filtering and one or more low-frequency signals obtained through orthogonal decomposition of each layer into orthogonal filters and then combine signals output by the orthogonal filters.
Dependencies are inferred from the claim text.