randdeintrlv
Restore ordering of symbols using random permutation
Syntax
deintrlvd = randdeintrlv(data,state)
Description
deintrlvd = randdeintrlv(data,state) restores
the original ordering of the elements in data by
inverting a random permutation. The state parameter
initializes the random number generator that the function uses to
determine the permutation. state is either a scalar
or a 35x1 vector, and is described in the rand function,
which is used in randintrlv. The function is predictable
for a given state, but different states produce different permutations.
If data is a matrix with multiple rows and columns,
the function processes the columns independently.
To use this function as an inverse of the randintrlv function,
use the same state input in both functions. In
that case, the two functions are inverses in the sense that applying randintrlv followed
by randdeintrlv leaves data unchanged.
This function uses, by default, the Mersenne Twister algorithm by Nishimura and Matsumoto.
Note
Using the state parameter causes this function
to switch random generators to use the 'state' algorithm
of the rand function.
See rand for details on the generator algorithm.
Examples
For an example using random interleaving and deinterleaving, see Improve Error Rate Using Block Interleaving in MATLAB.
Version History
Introduced before R2006a
