We have different systems. We have 16 states, because we are also a federal republic. All state parliaments have electoral systems that are, at face value, very similar, but when you look at the details they are different.
There are 16 different systems in each of our 16 states. There is a different system for the Bundestag, there is a different system for the European Parliament. All systems, however, I would subsume under the description of proportional representation combined with the election of persons.
However, you can mix the two components in a different way and what we've tried to do is to mix them in a way that we understand is an issue in your committee work, or is an issue in Canada right now.