Communications Blockset

Basic Communications Functions

The Basic Comm Functions library contains these sublibraries:

• Integrators
• Sequence Operations

The main Basic Comm Functions library appears below. You can open it by double-clicking on its icon in the main Communications Blockset library (commlib), or by typing commbasic2 at the MATLAB prompt. Each icon in the Basic Comm Functions 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.

Integrators

You can open the Integrators sublibrary by double-clicking on the Integrators icon in the main Basic Comm Functions library, or by typing comminteg2 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 Integrators library. For information about a specific block, see the reference pages that follow.

Block Name	Purpose
Discrete Modulo Integrator	Integrate in discrete time and reduce by a modulus
Integrate and Dump	Integrate, resetting to zero periodically and reducing by a modulus
Modulo Integrator	Integrate in continuous time and reduce by a modulus
Windowed Integrator	Integrate over a time window of fixed length

Sequence Operations

You can open the Sequence Operations sublibrary by double-clicking on the Sequence Operations icon in the main Basic Comm Functions library, or by typing commsequence2 at the MATLAB prompt.

Note    In this document, you can jump to a Communications Blockset block's reference page by clicking on its icon below. (The Repeat block is in the DSP Blockset, not the Communications Blockset; the icon in the Sequence Operations sublibrary is merely a link to the DSP Blockset.)

The table below lists and describes the blocks in the Sequence Operations library. For information about a specific block, see the reference pages that follow.

Block Name	Purpose
Complex Phase Difference	Output the phase difference between the two complex input signals
Complex Phase Shift	Shift the phase of the complex input signal by the second input value
Deinterlacer	Distribute elements of input vector alternately between two output vectors
Derepeat	Reduce sampling rate by averaging consecutive samples
Descrambler	Descramble the input signal
Insert Zero	Distribute input elements in output vector
Interlacer	Alternately select elements from two input vectors to generate output vector
Puncture	Output the elements which correspond to 1s in the binary Puncture vector
Repeat	Resample an input at a higher rate by repeating values
Scrambler	Scramble the input signal

Synchronization

Utility Functions