4G WIRELESS TECNOLOGY

4G WIRELESS TECNOLOGY Abstract Today is the day of internet. In most plain stitch piano tuner system is in truth widely used. Currently a reduce of technologies like1G,2G,2. 5G,3G etc A new technology is introduced which is called as 4G technology. Fourth generation wireless system is a packet switched wireless system with wide heavens reportage and high throughput. It is designed to be cost effective and to stand high unearthly efficiency. Data rate of 20mbps is employed.Mobile speed result be up to200km/hr. The high performance is achieved by the use of long marches channel in both clipping termchannel in both time and relative frequency ,scheduling among users and quick antennas combined with adaptive modulation and power control. frequency band is 2-8 GHz. it gives the ability for world wide roaming to access cell anywhere. It uses OFDM (ortogonal frequency divisional multiplexing) and Ultra Wide Radio Band(UWB), and Millimeter wireless and smart antenna. G uses a mult i network functional device software which is very helpful for multiple user. Advantages -support for interactive multimedia, voice, streaming video, Internet, and other broadband serve -IP based mobile system-High speed, high capacity, and low cost per bit. -global access, service portability, and ascendible mobile services -Seamless switching and a variety of Quality of -Better spectral efficiency.Service driven services. Better scheduling and call admission control techniques Disadvantages -Expensive and unverbalised to implement -bettery usage is more -needs complex hardware Conclusion at that place is a need for next generation of wireless technology i. e. 4G which will be a platform for seamless technology providing widespread coverage ,band width and power consumption with higher data rates . .