Okay kiddo, let me explain what a bandwidth-limited pulse is.
Have you ever heard of the word "bandwidth"? When we use the internet or listen to music, bandwidth is the amount of data or information that can be sent or received at a time. It's like a water pipe that can only handle a certain amount of water flowing through it.
Now, let's talk about a "pulse". A pulse is a burst of energy that happens quickly and then goes away. It's like if you clap your hands really loudly and then stop. That's a pulse of sound energy.
When we say "bandwidth-limited pulse", we mean that the burst of energy (pulse) is limited by the amount of data that can be sent or received at a time (bandwidth). It's like trying to fit a big toy through a small door - only some of it can fit at a time.
So, imagine we have a computer sending a signal over the internet. If we want to send a pulse of information, we have to make sure it's not too big or it won't fit through the "doorway" of the internet connection. That's why we use a bandwidth-limited pulse - we make sure the pulse is small enough to fit through the connection without getting stuck.
Does that make sense, little one?