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Signal processing method, device and system

A signal processing and signal processor technology, applied in the direction of complex mathematical operations, etc., can solve the problems of complex twiddle factor rules, complex algorithm splitting, complicated detail design, etc., to shorten the development cycle, simplify the algorithm, and achieve the effect of efficient access.

Active Publication Date: 2010-02-24
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] However, the disadvantage of adopting the above-mentioned system and algorithm is that the technical cost is very high, and 5 TI high-end c6000 series DSP chips are required for 256k points;
[0041] The algorithm splitting is complex, the data flow is cumbersome, and the rules of the rotation factors used are complex; the program is complex, there are many sub-processes, and the detailed design is complicated

Method used

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  • Signal processing method, device and system
  • Signal processing method, device and system
  • Signal processing method, device and system

Examples

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Embodiment 1

[0078] The present invention provides a signal processing system, such as Figure 5 As shown, the system includes a data acquisition unit 501 and a data conversion unit 502 connected to the data acquisition unit 501;

[0079] In addition, it also includes a digital signal processing device 503, which is used to receive and store the N-point input data transmitted by the data conversion unit 502, and store the processed output data and the twiddle factors required for processing. m FFT and use the rotation factor to process the input data of N points;

[0080] Wherein, the series of the N point input data is M = log 2 m N , Each level includes N / 2 m Butterfly units, where N is the number of input data points, M is an integer, and m is a positive integer.

[0081] Such as Figure 5 As shown, the digital signal processing device 503 includes: a digital signal ...

Embodiment 2

[0100] Hereinafter, the signal processing method of the present invention will be described in detail by taking the signal processing system of Embodiment 1 as an example.

[0101] The present invention provides a kind of signal processing method, and this method comprises steps:

[0102] The data acquisition unit 501 collects signals and transmits the collected signals to the data conversion unit 502 for conversion to become digital data;

[0103] This digital data is input into digital signal processing device 503 as input data, and this device 503 comprises external memory 503b and a signal processor 503a; Wherein,

[0104] The external memory 503b is used to receive and store the N-point input data transmitted by the data conversion unit 502, and also store the output data processed by the digital signal processor 503a and the twiddle factors required for processing;

[0105] The digital signal processor 503a is connected with the external memory 503b, and adopts frequenc...

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Abstract

The invention provides a signal processing method, device and system. The digital signal processing method is based on a digital signal processing device which comprises an external memory and a signal processor, wherein the signal processor processes N-spot input data stored in the external memory by using decimation-in-frequency base-2<m>FFT and a rotating factor stored in the external memory. The levels of the N-spot input data can be calculated by the formula M=log<N>2<m>, and each level comprises N / 2<m> butterfly units, wherein N is the number of input data, M is an integer, and m is a positive integer. According to the invention, large-point calculation can be achieved by adopting single-chip fix-point DSP at low cost.

Description

technical field [0001] The present invention relates to digital signal processing technology, in particular to a signal processing method, device and system. Background technique [0002] At present, the application range of high-speed digital signal processing is becoming wider and wider, especially in new technology fields such as radar positioning, sonar, oil exploration, optical fiber sensors, mobile communications, software radio, and smart antennas, all of which require powerful real-time digital signals Processing support to complete the tasks of target detection, estimation, and tracking. And, by processing the signal to a certain extent, extracting features, analyzing and identifying, and obtaining relevant parameters and results according to requirements. [0003] In digital signal processing, the signal is represented by a sequence of finite precision numbers, and the processing is realized by digital operations. Spectrum analysis, discrete Fourier transform (DF...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/14
Inventor 罗爱平伍剑徐坤林金桐
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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