hexagon.hvx.IFFT2

R2026b

2-D inverse fast Fourier transform using HVX

Since R2026b

Description

The hexagon.hvx.IFFT2 System object™ computes the inverse two-dimensional fast Fourier transform (IFFT) using the Qualcomm^® Hexagon^® Vector eXtensions (HVX) library.

To perform a 2-D IFFT operation:

1. Create the hexagon.hvx.IFFT2 object and set its properties.

2. Call the object with arguments, as if it were a function.

To learn more about how System objects work, see What Are System Objects?

The System object supports simulation and generates optimized code for Qualcomm DSPs using CRL-based replacements. Use this System object to reconstruct spatial-domain data from frequency-domain representations in image processing and similar workflows.

You can deploy the code generated using the hexagon.hvx.IFFT2 System object to one of these boards that are available under the Hardware board parameter in Configuration Parameters:

• Qualcomm Hexagon Android Board

• Qualcomm Hexagon Linux Board

Creation

Syntax

obj = hexagon.hvx.IFFT2()

Description

obj = hexagon.hvx.IFFT2() creates a 2-D IFFT System object.

Usage

Syntax

y = obj(x)

Description

y = obj(x) performs a 2-D IFFT operation on x.

Input Arguments

x — Input signal

complex 2-D square matrix

Input signal, specified as a complex 2-D square matrix. The dimension of the square matrix must be a power of two and greater than or equal to 64.

Data Types: single
Complex Number Support: Yes

Output Arguments

y — IFFT output

real 2-D matrix

IFFT output, returned as a real-valued 2-D matrix.

Data Types: single

Object Functions

To use an object function, specify the System object as the first input argument. For example, to release system resources of a System object named obj, use this syntax:

release(obj)

Common to All System Objects

step	Run System object algorithm
release	Release resources and allow changes to System object property values and input characteristics
reset	Reset internal states of System object

Examples

Compute 2‑D IFFT

Create frequency-domain input (conjugate symmetric for real output).

x = fft2(rand([128,128],"single"));

Create a 2-D IFFT System object.

obj = hexagon.hvx.IFFT2()

Compute the 2-D IFFT.

Y = obj(x);

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2026b