Documentation

This is machine translation

Translated by Microsoft
Mouse over text to see original. Click the button below to return to the English verison of the page.

ifft

Inverse discrete Fourier transform

Syntax

ifft(x)

Description

ifft(x) is the inverse discrete Fourier transform (DFT) of the Galois vector x. If x is in the Galois field GF(2m), the length of x must be 2m-1.

Examples

For an example using ifft, see the reference page for fft.

Limitations

The Galois field over which this function works must have 256 or fewer elements. In other words, x must be in the Galois field GF(2m), where m is an integer between 1 and 8.

More About

collapse all

Algorithms

If x is a column vector, ifft applies dftmtx to the multiplicative inverse of the primitive element of the Galois field and multiplies the resulting matrix by x.

See Also

|

Introduced before R2006a

Was this topic helpful?