You may not need any explanation about Matlab itself. It would be one of the most widely used software in engineering. In this page, I would focus on using Matlab as SDR / Signal processing tool.
Matlab would not be a good tool for implementing SDR algorithm that runs on a target hardware, but it can be widely used for algorithm design and verification.
There are a few packages (Toolbox) in Matlab that can be useful for SDR algorithm design would be as follows.