A SEMINAR REPORT ON 4G TECHNOLOGY
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A SEMINAR REPORT ON 4G TECHNOLOGY


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Introduction

4G, the successor of 3G, will soon become the standard for cellular wireless
The technology is currently available in some countries but it is still being perfected
The aim is to achieve “ultra broadband speed” – to be counted in gigabytes per second.

What is 4G

ITU designed 4G in 2002 with the official name “3G Long-Term Evolutions” or 3.9G
Will allow users to download a full-length feature film within five minutes
Will also be able to stream high-definition television and radio to hand-held devices
The basic difference between 3G and 4G is in data transfer and signal quality
The highest download and upload speed in 3G are 14 Mbps and 5.8 Mbps respectively
In 4G the download speed is up to 100 Mbps for moving users and 1 Gbps for stationary users
4G is adoption of packet switching instead of circuit switching in voice and video calls
With packet switching, resources are only used when there is information to be sent across
4G uses spiral multiplexing

Evolution of 4G

The first commercial deployment was by Telia Sonera and NetCom
Telia Sonera branded the network “4G”
The modem devices on offer were manufactured by Samsung (dongle GT-B3710)
The network infrastructure were created by Huawei (in Oslo) and Ericsson (in Stockholm).

WiMax

WiMax technology might not achieve the required rate in a high-density area
However, WiMax technology becomes useful when it is bundled with IPTV
The wireless bandwidth will be roughly 3Mbps/1.5Mbps; but this is nowhere near the +100Mbps/50Mbps that LTE promises.



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