Implementation of FFT in C language_ generated input samples from MATLAB

Hii everyone,

I have generated RADAR input signal with length of signal is 1*32768 in MATLAB. Now i want to applay 1-D FFT for 256 samples on input signal in C programming. I dont know how should i proceed next. can anyone please help me regarding this?

I have extreacted 256 samples from input signal in .txt file.

[Jan]

Why do you want to use C code, if Matlab has an efficient fft implementation already?

Do you have some C code for the fft? If so, all you need is a mex wrapper.

[Gunjanben Limbachiya]

Hii,

yes, MATLAB has efficient implementation and i got the all the results which i wants but to implement FFT algorithams on processor i wants to use C language related information. I dont know how to start implemetation in C.

[Jan]

Then this is a question for a C forum and off-topic here.

Did you search e.g. for "fft C" in the net already? You will find many implementations. The creation of a C-mex wrapper is easy also and Matlab includes some useful examples. Search in the documentation.

[Gunjanben Limbachiya]

Thank you so much.

Answer 1

[Benjamin Thompson]

MATLAB has support for fftw which is open source from MIT and also available in an open source C library at https://www.fftw.org/.