INTRODUCTION<br />4G is the next major generation of mobile cellular systems, to be deployed around the year 2010<br />4G networks are projected to provide speeds of 100 Mbps while moving and 1 Gbps while stationary. <br />
What is 4g?<br />New Technology Advancements<br /><ul><li>Radio Technology - Orthogonal Frequency-Division Multiplexing (OFDM)
4G Access Options<br />Embed 4G technology into all end-user devices<br />Develop mobile personal gateways <br />Develop external interfaces with 4G peripherals<br />
Features<br /><ul><li>Wireless Internet with a bandwidth much wider than the 2G or 3G networks - 100 MHz
Significantly increased the speed of data transmission - up to Gbps 1st
Calls video conference - with more than 2 speakers, and because the flow of data faster will be less problems, not so often as to break with the 3G.
The enhanced security features to prevent fraud and theft.
The larger bandwidth for data sharing are relatively inexpensive</li></li></ul><li>advantages<br /><ul><li>In a fourth-generation wireless system, cellular providers have the opportunity to offer data access to a wide variety of devices.
The cellular network would become a data network on which cellular phones could operate — as well as any other data device.
Personal Media Repository:- Create a personal media repository that can be accessed from home and on the road to view photos, watch movies and listen to your personal music collection.
Broadband Access in Remote Locations :- In addition, 4G will provide the first opportunity for broadband access in remote locations without an infrastructure to support cable or DSL access. </li></li></ul><li>disadvantages<br />Just as 3G technology started in major cities and to creep out into the suburbs and countryside slowly, 4G technology is currently found mainly in highly populated areas. If you're interested in this technology and want to use it for traveling, you might find that you can't take it as many places as you would like, as of yet. You'll simply run out of signal before you get where you're going.<br />
application<br />The "killer application" is simply to have mobile always on internet<br />4G should be able to provide users with streaming high-definition television.<br />The content of a DVD, for example a movie, can be downloaded within about 5 minutes for offline access.<br />Though the improved bandwidths and data throughput offered by 4g networks should provide opportunities for previously impossible products and services to be released.<br />
REFERENCES<br />http://en.wikipedia.org/wiki/4G<br />http://www.wisegeek.com<br />http://www.freewimaxinfo.com/4g.html<br />http://4gmobile.com/<br />http://www.articlealley.com/article_1315993_81.html<br />4G Wireless Systems-Next-Generation Wireless Working Group<br />A 4G vision-Nicolas Demassieux European Communication Research Labs Motorola Labs<br />