I am starting grad school from next semester in electrical engineering. I am concentrating on signal processing.

It's been 10 years I have finished my undergraduate. So, i am preparing for my grad school and I am studying for that. What are some of the courses from undergrad that needs to be expertized to perform well in MS degree.
Looking to get some information from current and past MS students.

10 yrs after undergrad re....mane yar brolai...ani k gari ra ta bro etro din samma...paila padeko ta sab birsisakyo hola....lol..nyway somebody might help yu out..good luck

 Napadhe huncha bro....10 years experience bhayeko manche le kina jabo Masters garna paryo...waste of time and money.
aba bihe garera majjale gharjam garera base huncha.

you should be able to find pdf versions of these books..
linear systems and signals - lathi
discrete signal processing - oppenheim
enjoy!

 As Purana kagaz said if u have10 years experience then offcourse u r more knowledgeable than any PhD holder in that field and i guess u know that pretty much well. If u really want it to do from academic point of view then i will not say it is  just a waste of time n money. Few things that i would recommend you are
1) build up strong mathematical concept  ( basically calculus 'cause u gona messed up with it )
2) signals and system ( fourier series, fourier transform, z transform, DFT/FFT, LTI system, casaulity etc..)
3) Good concept of probability and statistics so u can deal well with random signal
4) filter design

The books i recommend are

1. Discrete-Time Signal Processing by A. V. Oppenheim and R. W. Schafer (  i used it as textbook)
2. Digital Signal Processing: Principles, Algorithms, and Applications by J. G. Proakis and D. G. Manolakis( good reference book)

From my personal view point B.P. lathi is easy to understand but it is so basic. U r going to have MSEE in signal processing so i recommend u to go through book #1

La sathi arko important kuro ta jhandai bhuleko.
Be a master of MATLAB. it will help you out during the analysis of signal

Thanks guys for your input