Communications Blockset

Controlled Sources

Blocks in the Controlled Sources sublibrary of the Comm Sources library simulate nonrandom signals by reading from a file or by simulating a voltage-controlled oscillator (VCO):

• The Triggered Read from File block reads a record from a file whenever an input trigger signal has a rising edge. You can set up the block to read at every rising edge of the trigger, or every kth rising edge of the trigger for a positive number k.
• A voltage-controlled oscillator is one part of a phase-locked loop. The Voltage-Controlled Oscillator and Discrete-Time VCO blocks implement voltage-controlled oscillators. These blocks produce continuous-time and discrete-time output signals, respectively. Each block's output signal is sinusoidal, and changes its frequency in response to the amplitude variations of the input signal.

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

• commcontsrcs2p1
  

at the MATLAB prompt.

Communications Sources

Random Data Sources