07-06-2012, 01:40 PM
EVOLUTION FROM 3G TO 4G AND BEYOND 5G
EVOLUTION_FROM_3G_TO_4G_AND_BEYOND_5G.ppt (Size: 1.41 MB / Downloads: 32)
INTRODUCTION TO WIRELESS COMMUNICATION
Our ultimate goal is to communicate with any type of information with anyone, at anytime, from anywhere. This is possible with the aid of WIRELESS TECHNOLOGY
TYPES OF WIRELESS COMMUNICATION NETWORKS
CELLULAR NETWORK
Evolved from mobile telephone as voice conversation and communication tools for private and business uses
WIRELESS LOCAL AREA NETWORK
Emerged from computer network. It helps business user to expand their service areas by using LAN (faster data transport)
WIRELESS APPLICATIONS AND SERVICES
WIRELESS APPLICATION
Wireless applications are those which use free space as the transmission medium and do not involve cabling like fibre or copper
2G WIRELESS SYSTEM
Fielded in the late 1980s and finished in the late 1990s
Planned for voice transmission with digital signal and the speeds up to 64kbps
2G was the digital handsets that we are used today, with 2.5G representing handsets with data capabilities over GPRS
3G WIRELESS SYSTEM
Developed in the late 1990s until present day
Japan is the first country having introduced 3G nationally, and in Japan the transition to 3G is being largely completed during 2005/2006
ISSUES ON 3G WIRELESS SYSTEM
High input fees for the 3G service licenses
Great differences in the licensing terms
Current high debt of many telecommunication companies, making it more of a challenge to build the necessary infrastructure for 3G
Health aspects of the effects of electromagnetic waves
Expense and bulk of 3G phones
Lack of 2G mobile user buy-in for 3G wireless service
Lack of coverage because it is still new service
High prices of 3G mobile services in some countries
