System object: comm.HadamardCode
Generate Hadamard code
Y = step(H)
Y = step(H) outputs a frame of the Hadamard code in column vector Y. Specify the frame length with the SamplesPerFrame property. The Hadamard code corresponds to one of the rows of an NxN Hadamard matrix, where N is a nonnegative power of 2, which you specify in the Length property. Use the Index property to choose the row of the Hadamard matrix. The step method outputs the code in a bi-polar format with 0 and 1 mapped to 1 and -1, respectively.
Note: H 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 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.