05-09-2014, 04:39 PM
4G refers to the fourth generation of cellular wireless standards. It is a successor to 3G and 2G families of standards. The predecessors of 4G are LTE, WIMAX, UMB AND Flash-OFDM. OFDM is designed to send data over hundreds of parallel streams, thus increasing the amount of information that can be sent at a time over traditional CDMA networks. 4G supports IPV6 for faster internet access. There is a deep history for 4G technology evolution. 4G is a collection of wireless standards. The IEEE has standardized 4G as 802.16m. The goal of 4G systems such as high rate, high reliability, and long range communications has increased its use and the evolution. The fourth generation of mobile networks will truly turn the current mobile phone networks, in to end to end IP based networks. 4G is set to deliver 100mbps to a roaming mobile device globally, and up to 1gbps to a stationary device. Currently 3G networks still send their data digitally over a single channel. The 4G is largely implemented outside India and will be soon adopted by Indian cellular companies. The term 4G is used broadly t