Posted by Jeff on Apr 15, 2011 in
Wireless Communication Systems
TweetContinuing on with wireless communications related subjects. The architecture of a UMTS systems is the first thing to begin understanding if you want to undertake an education such as this. It consists of three distinct components: The User Equipment (UE) The UMTS Terrestrial Radio Access Network (UTRAN) The Core Network (CN) As with any wireless [...]
Tags: core network, network architecture, radio access networks, UMTS, umts reference architecture, user equipment, UTRAN
TweetHey! This article has a simple purpose, to teach you basic functionality and terminology related to modern UMTS-CDMA digital coding techniques. One swift read of this information-packed kick in the face will leave you trembling at the knees with curiosity for more. Well, maybe not. But the first step in the UMTS-CDMA system applies error [...]
Tags: Bit Error Rate, block interleaving, convolutional encoding, digital coding techniques, turbo encoding
TweetThere are several different types of 3G wireless technologies that are defined and planned to be up and working today. There are also several that are on their way. These are successors of course, to the previous 2G technologies that dominated the airwaves. CDMA2000 CDMA2000 is the successor to IS-95 systems. CDMA2000 provides a definition [...]
Tags: 3G, 3G Wireless Technologies, 4G, CDMA2000, EDGE, EV-DO, GPRS, GSM, IS-136, IS-95, ITU, UMTS
Posted by Jeff on Mar 29, 2011 in
Wireless Communication Systems
TweetCellular systems have come a long way since their introduction in the 1980s. The evolution progressed from First Generation (1G) systems to Second Generation (2G) systems. Now, Third Generation (3G) systems are being deployed. 1G systems introduced the cellular concept, in which multiple antenna sites are used to serve an area. The coverage of a [...]
Tags: the evolution of wireless technologies, wireless technologies, wireless technologies evolution