The fourth generation of cellular wireless standards is generally referred to as 4G. While 4G seems to be a distant reality for India at the current time, 4G standards have been started in test & trial modes in many advanced countries including the United States and Japan. 4G promises enhanced speeds up to 100Mbps for mobile devices and up to 1Gbps for stationary devices. 4G will also revolutionize wireless network access (Wi-Fi) into a much faster and secure connection known as Wimax which will also be capable of providing gigabit speeds.
4G will also lead to seamless global roaming without any kind of disturbances which will lead to a much pleasant global telephony experience. In terms of multimedia, 4G will be able to provide real time television,HDTV video content, Ultra high speed mobile broadband and internet gaming on the go. Coming to the technical side, 4G will be based on OFDM - Orthogonal Frequency Division Multiplexing which will enable data to be sent on hundreds of parallel channelss instead of one channel as in case of traditional UMTS or CDMA network. From the above facts, we can conclude that 4G will be the next big thing in mobile telephony. But the question is "When will 4G be a reality in India, where even 3G networks have not been fully operational till now?"
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