Sunday, April 17, 2011

Long Term Evolution (LTE)

Long Term Evolution (LTE) makes speed cellular becomes more real. Featuring a super-sophisticated data applications into the mobile phone screen, LTE is one of the most important after the 3G mobile phone technology. LTE is now present, mobile broadband customers will not be forgotten after a try. Various applications of data browsing, email, video, download music, and various other applications directly with the keypad slid the phone clicked. Another advantage, the cost of bandwidth, or the use of spectrum and network simplikasi more efficient and flexible. LTE makes cost per gigabit is much cheaper. So, later, content or service providers to offer a flat package, "unlimited".

As a form of the optimal evolution of the 3GPP and 3GPP2 technologies, LTE offers speeds up to 173 Mbps on the downlink and 58 Mbps on the uplink, 10 times faster than HSPA. The issue of latency or delay when browsing and playing games will not be found in the LTE. Performance real time applications like VoIP. LTE provides a higher spectral efficiency of HSPA, so that content providers can condense the data into the existing spectrum. In addition, the LTE can use the length spectrum to choose from, ranging from 1.4Mhz until 20 MHz, whereas WCDMA uses a 5 MHz spectrum.

The experts concluded that the bandwidth from 80 Mbps to 150 Mbps is sufficient for most Internet users. At least for starters, because his plans LTE technology download speeds of 300 Mbps. To obtain this speed, interference-free transmission is required. For that developers combine it with some technologies, such as MIMO, QAM, and OFDM that uses multiple antennas at the same time to transmit and receive signals. In addition, this technology also enables a larger bitrate. Data packet sent to the user via an Internet Protocol (IP), such as the DSL connection.

This speed can be achieved by using Orthogonal Frequency Division Multiplexing (OFDM) in the downlink and Single Carrier Frequency Division Multiplex (SC-FDMA) on the uplink, which combined with the use of MIMO. Later the entire network based on LTE technology to Internet Protocol (IP) or also called All IP Networks (AIPN).

Thus, LTE technology is very similar to the WLAN. LTE and WiMax are not inferior to that being developed mainly in India and Africa and serves only as an Internet access only.

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