Some Interesting Places:
 International Telecommunication Union Standards Organization
 IEEE Communication Society Publications
 CDMA Development Group
Overview of GSM Wireless Standard 
Selected Academic Sites:
Rutgers University WINLAB
Stanford University
Wireless Systems Lab
The Univeristy of 
Texas at Austin: 
Wireless Networking and Communications Group (WNCG)
Signal Processing in 
Communications (SPINCOM) at the 
University of Minnesota
 Virginia Tech's MPRG
Companies:
Airtouch Communications, Inc.
Ameritech 
Analog Devices 
Applied Signal Technology, Inc. 
AT&T Wireless Services
AT&T Research
Telcordia Technologies 
Cirrus Logic 
General Instrument Corporation 
Harris Communications 
Hayes
Hughes Eelctronics Corporation 
Motorola 
Nokia
Northern Telecom (NORTEL) 
Qualcomm
National Semiconductor 
Skywire
US West (Qwest)