4G is the fourth generation of broadband mobile technology after 3G. All 4G technologies and other future technologies will serve the same expectation, i.e.: to provide enormously high data transfer rates to excessive number of users at the same time.
0G (zero generation) was the earliest form of internet technology,which …show more content…
Digitalizing helped to compress the signal which was much more efficient than analog systems, allowing the transfer of more packets into the same bandwidth and less power. Provided the service of Short Message Service(SMS). It was divided into Time Division Multiple Access(TDMA) and Code Division Multiple Access(CDMA). Based on TDMA, Global System for Mobile communications (GSM) was the first European standard for 2G telephony. Several other versions of the 2G communication were 2.5 GPRS and 2.75 EDGE.
3G (third generation) integrated voice and data applications. They also offer greater end to end security than their predecessors. However some flaws have been found in the security of 3G. Global Positioning System (GPS) was the biggest application under 3G technology.
In section II and III, we summarize the need for 4G technology. In section IV we present the challenges faced and overcome by 4G systems. Section V shows the technology used for the 4G to develop. Lastly section VI presents weaknesses of this system followed by future expectations and research in section VII.
II. 4G TECHNOLOGY
A. Definition …show more content…
From the consumers point of view, 4G is more of a marketing term more than a technical specification, while carriers feel justified in using the 4G label because it lets the customer know that he can expect high speed of data transfer. The expectation from 4G is high audio / video streaming over end to end Internet Protocol. Long Term Evolution (LTE) is sometimes also called 4G, which will be able to provide 150Mbps rates download rates for moving users and 1Gbps for stationary users. Though the exact definition is not yet known, we can say
“4G is the fourth generation of wireless technology, for mobile multimedia, anytime anywhere with global support and integrated customized personal service.”
B. Features provided by 4G :
The main features of 4G services which are of interest to users are application adaptability and high dynamism users traffic, radio environment, air interfaces and quality of services.
a. Support for interactive media, voice and video streaming, gaming, internet and other broadband services.
b. IP based mobile system.
c. High speed, high capacity and low cost per bit.
d. Global access, service portability and scaling mobile