The fourth generation mobile communication systems, 4 G, are already in development stage when we are still trying to get used to the 3G. Japanese, Americans and Europeans are testing on the technology which will probably launch in 2010.
UNDERSTANDING 4G
It is a fourth generation cellular technology. It offers improved bandwidths and data throughput. It will provide opportunities for previously impossible products and services. The need for more speed propelled service provider is to work on 4G. It’s a network that operates on Internet technology, combines it with other applications and technologies such as Wi-Fi, and runs at speeds ranging from 100 mbps in cell-phone networks to 1 Gbits in local Wi-Fi networks. It is also much more than handsets. It will provide a wide variety of new services, from high-quality voice to high-definition video to high-data-rate wireless channels.
The term 4G is used broadly to include several types of broadband wireless access communication systems, not only cellular telephone systems. One of the terms used to describe 4G is MAGIC-mobile multimedia, anytime anywhere, Global mobility support, integrated wireless solution, and customized personal service. As a promise for the future, 4G systems that are cellular broadband wireless access systems have been attracting much interest in the mobile communication arena. The features of 4G systems might be summarized with one word-integration because the new systems seek to seamlessly integrating terminals, networks, and applications to satisfy increasing user demands.
THE ADVANTAGES
4 G will cater the quality of service and rate requirements set by the forthcoming applications like wireless broadband access, Multimedia Messaging Service, video chat, mobile TV, High definition TV content, DVB and minimal service like voice and data at anytime and anywhere 4G. Application adaptability and being highly dynamic are the main features of 4G services of interest to users. These features mean services can be delivered and be available to the personal preference of different users and support the users, air interfaces, radio environment, and quality of service. Connection with the network applications can be transferred into various forms and levels correctly and efficiently.
The fourth generation will encompass all systems from various networks, public to private; operator-driven broadband networks to personal areas; and ad hoc networks. Much of the next-generation software-defined terminal will be packaged onto a single, complex system-on-a-chip or system-in-a-package (SIP). Such a system will combine power amplifiers with filters, antennas, and other components, which behave differently in mixed-mode environments. Digital signal processing (DSP) will be used more and more to compensate for analog impairments in front-end blocks.
The infrastructure and the terminals will have almost all the standards from 2G to 3G implemented. The system will also serve as an open platform where the new innovations can go with it. One of the standards which pave the way for 4G systems is WiMax.
4G is going to be a new opening into a new complex but seamless world of enterprise and drive for still better communications.