Hey guys, I'm taking a Digital Communications class and we are using the book "Digital Communications" by Bernard Sklar. I have heard from a few people that this book is not as mathematically rigorous as some of the other books in the field and therefore does not provide a deep understanding of the material. I am thinking about ordering the textbook "Digital Communications" by John Proakis. My professor has this listed as a recommended book and I've read some good reviews for it – especially that it is more mathematically intensive than the previously mentioned book. Has anyone used the book before and can testify for its quality? I also have the book "Communications Systems" by Simon Haykin that I used for another Communications class, so I have that as a reference as well. Thanks.