Communications Blockset

Interleaving

The Interleaving library contains two sublibraries:

• Block
• Convolutional

The main Interleaving library appears below. You can open it by double-clicking on its icon in the main Communications Blockset library (commlib), or by typing comminterleave2 at the MATLAB prompt. Each icon in the Interleaving window represents a sublibrary. In Simulink, double-clicking on one of these icons opens the sublibrary. In this document, clicking on one of the icons below jumps to an overview of that sublibrary.

Block Interleaving

You can open the Block sublibrary by double-clicking on the Block icon in the main Interleaving library, or by typing commblkintrlv2 at the MATLAB prompt.

Note    In this document, you can jump to a block's reference page by clicking on its icon below.

The table below lists and describes the blocks in the Block sublibrary of the Interleaving library. For information about a specific block, see the reference pages that follow.

Block Name	Purpose
Algebraic Deinterleaver	Restore ordering of the input symbols using algebraically derived permutation
Algebraic Interleaver	Reorder the input symbols using algebraically derived permutation table
General Block Deinterleaver	Restore ordering of the symbols in the input vector
General Block Interleaver	Reorder the symbols in the input vector
Matrix Deinterleaver	Permute input symbols by filling a matrix by columns and emptying it by rows
Matrix Helical Scan Deinterleaver	Restore ordering of input symbols by filling a matrix along diagonals
Matrix Helical Scan Interleaver	Permute input symbols by selecting matrix elements along diagonals
Matrix Interleaver	Permute input symbols by filling a matrix by rows and emptying it by columns
Random Deinterleaver	Restore ordering of the input symbols using a random permutation
Random Interleaver	Reorder the input symbols using a random permutation

Convolutional Interleaving

You can open the Convolutional sublibrary by double-clicking on the Convolutional icon in the main Interleaving library, or by typing commcnvintrlv2 at the MATLAB prompt.

Note    In this document, you can jump to a block's reference page by clicking on its icon below.

The table below lists and describes the blocks in the Convolutional sublibrary of the Interleaving library. For information about a specific block, see the reference pages that follow.

Block Name	Purpose
Convolutional Deinterleaver	Restore ordering of symbols that were permuted using shift registers
Convolutional Interleaver	Permute input symbols using a set of shift registers
General Multiplexed Deinterleaver	Restore ordering of symbols using specified-delay shift registers
General Multiplexed Interleaver	Permute input symbols using a set of shift registers with specified delays
Helical Deinterleaver	Restore ordering of symbols permuted by a helical interleaver
Helical Interleaver	Permute input symbols using a helical array

Error Detection and Correction

Modulation