Communications Blockset

Communications Sources

Every communication system contains one or more sources. You can find sources in Simulink's Sources library, in the DSP Blockset's DSP Sources library, and in the Communication Blockset's Comm Sources library.

You can open the Comm Sources library by double-clicking its icon in the main Communications Blockset library (commlib), or by typing

• commsource2
  

at the MATLAB prompt.

Blocks in the Comm Sources library can

• Generate controlled sources by reading from a file or by simulating a voltage-controlled oscillator (VCO)
• Generate random data
• Generate random noise to simulate channels
• Generate sequences that can be used for spreading or synchronization in a communication system.

This section describes these capabilities, considering first random and then nonrandom signals.

Processing Frame-Based and Sample-Based Signals

Controlled Sources