1.Wanna learn about the ATM Specs? Go to the ATM Forum
2. Some stuff about Ad Hoc Networks
IETF's MANET page -
Links to a couple of Routing Algo's -
3.Mobile IP-A tutorial by Charles Perkins
4. CDMA and W-CDMA tutorial
5.Convolutional Codes and Viterbi Decoding tutorial- Its pretty good..... with lots of references and practical applications & specs.
6. A Few Simulators:
*GLOMOSIM- A scalable mobile network simulator developed at UCLA. GLOMOSIM has the following routing protocols built into it : IP with AODV, Bellman-Ford, DSR, Fisheye, LAR scheme 1, ODMRP, WRP. At the MAC layer it has CSMA, IEEE 802.11 and MACA built into it.(Free download for researchers)
*NS-2 - The most popular software for simulating routing, multi-cast and TCP protocols over wired/wireless networks. (free download for researchers)
*OPNET - The software used by almost all commercial organizations for network simulations. (its not free guys, but students can apply for a 6 month trial license)
7. White papers: I found a cool site with tons of white papers on Communications and Networking . Click to go to ITpapers.com
8. Some Applets to understand Networking Concepts
*An applet to help understand how packets flow through the OSI protocol stack. Click here .
*A very good applet to understand CSMA/CD over a bridge. Click here.
*Applets to see a few MAC protocols in action. Demos available for Roll Call polling, Hub polling, Slotted Ring
Token bus etc. Click here .
9. An applet animation of Rayleigh fading. Click here.