Hi Grecia,
I'm very glad to hear that you're interested in GSoC and, ultimately, in contributing to the free software community! Given your interests and experience, GNU Radio is without a doubt the right project where you'll be able to share your knowledge while learning from those who are sharing ideas alike. GSoC is also a great place to start contributing, so we're happy that you are reaching out!
Have you had a look at the ideas list of this year [1]? If yes, is there any project that you find interesting? If, otherwise, you have an idea of your own, please do not hesitate to let us know as well. We'd be happy to know about what you've been working on and to find the right place where you can contribute to the project.
Cheers!
- Nico