Proakis's book is quite good if you want to really nail down the fundamentals of the mathematics, but it's completely detached from applications and intuition d

Proakis's book is quite good if you want to really nail down the fundamentals of the mathematics, but it's completely detached from applications and intuition despite what the cover (I suspect this is because the author has a different book on communication theory) says, so I'm not a huge fan of it.