1-Dr. Gu's book "RF System Design of Transceivers for Wireless Communications" is a decent book, although it's in need of a grammar editor. He covers CDMA/GSM.
2-Multiband/Multi mode receivers/transmitters are an active research topic. Take a look at **broken link removed** where I've bookmarked several university collections of Electronic Theses and Dissertations. Go looking through there and you will find several. I can't remember specific universities at this point, but I bookmarked them when I found them.