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Based on FPGA fast Fournier transformation_FPGA, FFT
Monday, January 11th, 2010 at 03:13 | No commentsCategories: EDA/PLDShort Content: Abstract: In (the fast Fournier transformation) the algorithm conducts the research to FFT in the foundation, described has realized the FFT method with FPGA, and to overall construction, the butterfly-shaped unit and the performance and so on has carried on the analysis. The Fourier transformation is in the digital signal processing elementary operation eo, widely applies in the indication and the analysis separate time domain signal domain. But because its operand and the transformation points N square is proportional ... -
The fixed geometry structure
Monday, January 11th, 2010 at 01:21 | No commentsCategories: EDA/PLDShort Content: 1. introduction DFT and fast algorithm FFT is the signal processing domain core constituent. The FFT algorithm are many and varied, not identical distributes the time domain and the frequency range according to the data combination way, different may divide into the base according to the data extract way 2, base 4 and so on. Various algorithms' good and bad points regard the different restriction factor, but is different. FFT realizes the method to be also many and ... -
Realizes the FFT algorithm with FPGA_FPGA, FFT
Friday, January 8th, 2010 at 20:49 | No commentsCategories: EDA/PLDShort Content: DFT (Discrete Fourier Transformation) is domain and so on digital signal analysis and processing like graph, pronunciation and image important changes of tools, the direct calculation DFT computation load and the transformation burst length N square is proportional. When N is big, because the computation load is too big, carries on the spectrum analysis and the signal real-time processing with the DFT algorithm is directly impractical. The fast Fournier transformation (Fast Fourier Transformation, is called FFT) to cause DFT ... -
In embedded system FFT algorithm research_FFT, embedded systems
Tuesday, October 20th, 2009 at 12:46 | No commentsCategories: Embedded systemTags: embedded systems, FFTShort Content: Abstract: First analyzes the real number FFT algorithm the inferential reasoning process, then gives one kind to realize FFT specifically the algorithm C language procedure, may apply directly in needs the FFT operation the monolithic integrated circuit or DSP and so on the embedded system. At present domestic related digital signal processing teaching material when the explanation fast Fournier transformation (FFT), is take plural number FFT as the key point, the real number FFT algorithm is one has brought, ... -
Based on TMS320LF2407A universal type cab signal examination
Thursday, October 1st, 2009 at 20:04 | No commentsCategories: DSPShort Content: The railroad cab signal examination is guarantees the train safe operation one of three big important attributes. At present, our country railroad cab signal mainly uses phase continual frequency-shift keying FSK (Frequency-Shift Keying) the modulation system. Although it has digital communication many merits, but also has the characteristic which the misalignment modulates, thus causes actually time the high accuracy examination has the very major difficulty. Along with the digital signal processing technology and the DSP component's development, abandoned the traditional ... -
In the DSP integrated development environment’s mix programming and the FFT algorithm realize - en.51rd.net
Tuesday, June 30th, 2009 at 17:48 | No commentsCategories: DSPShort Content: -
The intelligent distribution network observation system realizes - en.51rd.net
Wednesday, February 4th, 2009 at 19:53 | No commentsCategories: Power SupplyTags: AD73360, ADSP2191M, Electrical energy quality, FFT, frequency spectrum divulging, overtone, stockade effectShort Content: Abstract: This article introduced one kind unifies take ADC and the DSP processor as the foundation redundant reliable distribution network observation system, this system hardware design is not only succinct, moreover the reliability is high, the survey speed is quick.Key word: Electrical energy quality; FFT; Frequency spectrum divulging; Stockade effect; Overtone Introduction The electrical energy quality is weighs the electrical network quality the standard, the electrical energy quality question contains the voltage hollow (sag), the voltage to stick out (swell), ... -
Uses the low power loss micro controller to develop FFT the application
Thursday, October 30th, 2008 at 04:17 | No commentsCategories: SCMTags: FFT, microprocessorShort Content: 1 outline Present's low power loss micro controller (μC) also starts to integrate only exists originally in the large-scale microprocessor, ASIC and the DSP peripheral device function, enables us to have the possibility to realize the complex arithmetic operation by the very low power loss. This article discusses one kind of the fast Fournier transformation (FFT) application, and, in includes the monocycle hardware multiplier's low power loss μC on to realize this application. This FFT applies a real-time computation group ... -
Based on DSP simple, economical, practical idle work compensator design
Sunday, October 5th, 2008 at 19:15 | No commentsCategories: DSPShort Content: Abstract: Introduced the application in the wind generator set electrically controlled system the idle work compensation controller's development, this controller realizes based on DSP to the network voltage and the electric current which flows out from the generator fast, the accurate examination, carries on the FFT transformation, figures out the reactive component value which precisely must compensate, thus carries on at the right moment, the effective compensation to the electrical network. 3.2 system various part of hardware design3.2.1 DSP basic system's ... -
Module design with realizes - en.51rd.net based on Stratix the series FPGA FFT
Wednesday, September 24th, 2008 at 11:10 | No commentsCategories: EDA/PLDShort Content: Abstract: The main introduction the FFT module's design with realizes the plan based on the scene programmable gate array (FPGA) microwave relay correspondence. Proposed that one kind of entire parallel running water structure, uses new generation large capacity high speed Stratix series FPGA to be possible to complete N spot in N system clock FFT, the stable property, the operating speed is quick, can definitely satisfy the signal real-time processing the request.Key word: FFT; Starix; FPGA: Entire parallel running water ...
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