Please give me some advices about BS transceiver design.

I will graduate this july, I find a job as a RF design Engineer, my job is to do Base Station RF transceiver R&D. I have two years experience on LNA and PA design and some knowledge on Repeater. But I am not very family with BS RF transceiver design.For example: What's the difficulty and what's the key?
Can anyone give me some advices or recommend some classic documents about RF transceiver design? Electronic documents are welcome. :)
Thanks very much.