Why does my model halt during simulation when I specify a large Correlation window length for the Find Delay block in Communcations Blockset 3.3 (R2006a)?

I have a Find Delay block with a Correlation window length of 64000 in my model.

When I start the simulation, the model takes a long time to initialize and then halts after every 125 frames. However, if I reduce the Correlation window length to 1000, the simulation runs fine and smoothly.

Answer 1

[MathWorks Support Team]

When the Find Delay block uses a very long correlation window length, it is possible that the simulation will run slowly. This is expected behavior. As the Correlation window length is increased, the reliability of the delay computed also increases. However, the processing time to compute the delay increases as well.