Probably the best technical books around 3GPP technologies are made by Inacon. This one describes UMTS Network Optimisation & Troubleshooting.
It is quite in big in size as it is a scanned version of the real book. It is in full colour.
The HSDPA book from Inacon can be found here..
http://www.finetopix.com/showthread.php?t=4347