Are you going to research new or old topics?

If it's old topics, you can go through WEP (there's a few, one of them is "chop chop", WPA2 Hole 196, WPS, and of course bruteforce / rainbow attacks, etc. but that only applies if you mean 802.11

You could also research Bluetooth security, or even more interesting, RFID security. The last one has quite a lot of problems, where Myth Busters was going to reveal their research during a program but were forced to go silent, by the big names in the payment card industry.

So with RFID you could most likely research new things, in e.g., credit cards and other objects, where tracking, and especially security issues could be interesting.

@MaXe I want to research on new topics.

Thanks cd1zz and please if some one have other suggestions i will be very happy to know about it.   

Thanks WCNA your information is very helpful.