There's no way I'm going to do your work for you, however I can offer you some advice that will help you do your work on your own. If you're not willing to do the work on your own, then what you're basically saying is you may as well give up now because you'll never amount to anything; certainly not an Engineer.
So, given that we agree an Engineer has to be capable of his own work, why don't you check out Holtek's range of 2^12 series Encoders / Decoders (such as HT12D and HT12F). These devices will simplify your project quite considerably, because all you need to do is study the datasheet to determine how to "drive" it, and then interface with suitable RF transmitter/receiver modules at each end.
After you've read the datasheet and demonstrated that you've done some work on your own, I'll probably be willing to help with any questions / problems you might have.
Brian