System object: comm.ConvolutionalDeinterleaver
Package: comm
Restore ordering of symbols using shift registers
Y = step(H,X)
Note
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,x) and y = obj(x) perform equivalent operations.
Y = step(H,X) restores the original ordering of the sequence,
X, that was interleaved using a convolutional interleaver and
returns Y. The input X must be a column vector.
The data type can be numeric, logical, or fixed-point (fi objects). Y
has the same data type as X. The convolutional deinterleaver object
uses a set of N shift registers, where N is the
value specified by the NumRegisters property. The
object sets the delay value of the k-th shift register to the product
of (k-1) and RegisterLengthStep
property value. With each new input symbol, a commutator switches to a new register and
the new symbol shifts in while the oldest symbol in that register shifts out. When the
commutator reaches the N-th register and the next new input occurs,
it returns to the first register.
Note
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 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.