If you can talk with a Professor, it has definitely positive impact for your application. I would suggest you to prepare an academic statement, it may be helpful. Don't limit your direction in Embedded System only, that is some craftman skill, but think more academic directions. Good luck.
First, you should study what the professor has done before and is doing right now, and its intersection with your interest and experiences. Second, send a e-mail to the professor and go to see him/her.