System object: comm.WalshCode
Package: comm

Generate Walsh code from orthogonal set of codes


Y = step(H)



Starting in R2016b, instead of using the step method to perform the operation defined by the System object™, you can call the object with arguments, as if it were a function. For example, y = step(obj) and y = obj() perform equivalent operations.

Y = step(H) outputs a frame of the Walsh code in column vector Y. Specify the frame length with the SamplesPerFrame property. The Walsh code corresponds to a row of an NxN Hadamard matrix, where N is a nonnegative power of 2 that you specify in the Length property. Use the Index property to choose the row of the Hadamard matrix. The output code is in a bi-polar format with 0 and 1 mapped to 1 and -1 respectively.


obj specifies the System object on which to run this step method.

The object performs an initialization the first time the step method is executed. This initialization locks nontunable properties (MATLAB) and input specifications, such as dimensions, complexity, and data type of the input data. If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first call the release method to unlock the object.