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Walsh Hadamard Inverse (G Dataflow)

Last Modified: January 9, 2017

Computes the inverse of the real Walsh Hadamard transform of a sequence.



The input sequence.

The length of the sequence has to be a power of 2, otherwise this node returns an error.


error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: No error



The inverse Walsh Hadamard transform of the input sequence.


error out

Error information. The node produces this output according to standard error behavior.

Algorithm Definition

If WH{X} denotes the Walsh Hadamard transform of a sequence X and WHI{X} denotes the inverse Walsh Hadamard transform, then:

W H I { W H { X } } = W H { W H I { X } } = X

Furthermore, the following equation is valid:

W H I { X } = 1 n W H { X }

where n is the length of X.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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