I have to compute the symbol coordinates and modulation constellation and I don't really know how to do that when I don't have a a cosines, but instead I have a square pulse.

The exercise is the following one: imgur(dot)com/Gs7KH0W(dot)png

If you could redirect me to a page where it explains how to draw the constellation from signals like the one they are giving me it would be awesome.

Thank you!

To compute symbol coordinates and modulation constellation, you need to understand how the symbol mapping works based on the given square pulse signal. Here's a step-by-step guide on how to do it:

1. Start by understanding the square pulse signal. In the given exercise, they define the pulse shape as T * rect(t/T), where T is the symbol duration and rect(t/T) is a rectangular function with a width of T.

2. Find the symbols from the given signal. Since the pulse shape is a square pulse, the symbols will be defined by the peak amplitude of the pulse at specific time intervals.

3. Calculate the symbol coordinates for each symbol. In this case, the symbol coordinates are simply the peak amplitudes of the square pulse at different time intervals.

4. Plot the modulation constellation. The constellation diagram is a graphical representation of the symbol coordinates. Each symbol is represented by a point on the diagram. Connect the points to visualize the shape of the modulation constellation.

To delve deeper into this topic, there are resources available online such as textbooks, lecture slides, or academic papers that explain the concept of modulation constellations and how to draw them. Some potential keywords to search for include "digital modulation constellations" or "modulation constellation diagrams." Websites like Wikipedia or academic repositories like IEEE Xplore or Google Scholar might provide valuable resources.