* the @x contains the result of FFT algorithm, so the original data * in @x is destroyed, please store them before using FFT. */intifft(complex*x,intN){intk=0;for(k=0;k<=N-1;k++){x[k].img=-x[k].img;}fft(x,N);/* using FFT */for(k=0;k<=N-1;k++){x[k].real...
* === Output === * the @x contains the result of FFT algorithm, so the original data * in @x is destroyed, please store them before using FFT. */ int ifft(complex *x, int N) { int k = 0; for (k=0; k<=N-1; k++) { x[k].img = -x[k].img; } fft(x, N); /*...
directions.However,DSPisbasicllyfromtworespectstosolvethe problemofsignalprocessing:oneistime-domain,theso-calleddigital filter;anotherisspectrum-domain,theso-calledspectrumanalysis. ThepassageismainlyintroducedFFTandDFT,bystudyingaboutthe algorithmofFFTandDFT,studyingdeeplyfromthebasicandlearning, graspingthekeyof...
therealizationmethodofFFTbasedonDSP TMS320C5402ispresented.ItisprovedthatthealgorithmcanrealizeFFTmathematicaloperationandimproveits speedandprecisionofoperation. Key words : fastfouriertransform ; digitalsignalprocessing ; TMS320C5402 1 引言 傅里叶变换是将信号从时域形式变换为频域形 式表示的一种变换方法....
* the @x contains the result of FFT algorithm, so the original data * in @x is destroyed, please store them before using FFT. */ int fft(complex *x, int N) { int i,j,l,ip; static int M = 0; static int le,le2; static FFT_TYPE sR,sI,tR,tI,uR,uI; ...
LTE系统中FFT的研究与DSP实现 Wang Dan,Xu Hu Abstract:Research and analysis on the commonly used FFT algorithm principles, a simple and effect implementation approach implemented in the TMS320C64x DSP is proposed in this paper. The running results of the FFT program in CCS3.3 verify that the ...
[4] SAIDI A.Decimation-in-time-frequencyFFTalgorithm[M]. Manuscript, To be published.1993. [5] Texas Instruments Incorporated.TMS320C64x/C64x+DSP CPU and instruction set referenceguide[EB/OL].Http://www.ti.com.cn,2008. [6] Texas Instruments Incorporated.TMS320C6000系列DSP编程工具与指南[M...
This is not necessarily reasonable in the digital signal processor (DSP), where the multiplication can be performed in the time equal to that of other operations. From such a viewpoint, this paper proposes an algorithm which matches the feature of DSP, where the processing is fast when the ...
In this work, FFT algorithm for reference current generation is discussed. FFT control algorithm is verified using PSIM simulation results with DLL block and C-code. Simulation results are compared with experimental results for FFT algorithm using DSP TMS320F28335 for shunt active power filter ...
In this paper, the author expounds the summary of FFT, discussed the mathematic theory principle and fast Fourier transform algorithm. Key words: DSP; FFT algorithm 中图分类号:TN911.7文献标识码:A 引言 近些年来,数字信号处理技术得到了迅速的发展,特别是随着微计算机和超大规模集成电路的飞跃发展,数字...